Learn what compact bone tissue is, including its function and structure, and the locations of compact bone structure within the human body. What is A person who sells flower is called? Lets explore the osteon using the newly improved model! As the name implies, an articulation is where two bone surfaces come together (articulus = joint). On February 1 st marked two years since the Military Junta known as Tatmadaw took over the power in Myanmar orchestrating a coup which removed the incumbent National League for Democracy ( NLD) government. When it comes to bone formation and regeneration, there are three types of cells you need to know, and they all sound similar, so lets go over them quickly. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Compact Bone Structure. Most studied answer. Createyouraccount. What is the structure and function of spongy bone? You have a recently deceased individual in your lab who displays numerous indications of blunt force trauma including numerous lacerations and bruises. (a) Volkmann's canals. The structure of a long bone allows for the best visualization of all of the parts of a bone ( Figure 6.7 ). Give examples. Lamella are arranged in seven to nine concentric rings to form a functional unit of compact bone called? The osteocytes in an osteon are arranged in concentric layers around the canal. (a) osteon (b) canaliculus (c) lacuna (d) lamellae. C) concentric lamellae. In this region, the epiphyses are covered with articular cartilage, a thin layer of hyaline cartilage that reduces friction and acts as a shock absorber. Each ring of the osteon is made of collagen and calcified matrix and is called a lamella (plural = lamellae). This type of tissue is a precursor to bone in the fetus. The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. As part of Human Anatomy Atlas 2022 +s May 2022 update, we released a revamped osteon model, adding more detail in the central canal and the concentric lamellae so that students, instructors, and others can examine this microanatomical structure in greater depth. Simple Cuboidal C. Simple Columnar D. Stratified Squamous E. Stratified Cuboidal F. Pseudostratified Columnar. The answer lies in the properties of a third category of bone cellsthe osteogenic (osteoprogenitor) cell. Watch this video to see the microscopic features of a bone. A) osteoclast B) osteoblast C) progenitor cell D) osteocyte. a. diaphysis. antemortem, or postmortem? A. 1. e. fibrocartilage. Compact bone tissue is composed of osteons and forms the external layer of all bones. The osteon is the structural unit of compact bone. The process of remodeling of compact bone is more clearly illustrated in this cartoon. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The bed is shipped in pieces that lay flat in the box. . Compact bone. Cancellous bone tissue: a) is very dense. These cookies ensure basic functionalities and security features of the website, anonymously. . The skeletal muscle as an entire organ is covered by: a. endomysium. Course Hero is not sponsored or endorsed by any college or university. Put simply, the osteon is made of lamellae, lacunae, and osteocytes arranged around a central canal. The bones of the vertebrae are from the mesenchymal cells derived from: 1) Ectoderm. If the articular cartilage at the end of one of your long bones were to degenerate, what symptoms do you think you would experience? The remainder of the bone is formed by porous or spongy bone. The remainder of the bone is formed by porous or spongy bone. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. D) epiphysis. (credit: modification of work by NCI, NIH) Compact bone forms the cortex or hard outer shell of most bones in the body of every vertebrate animal. (b) epineurium. 2. What are the short bones in the skeletal system? These bones are formed from denser material that creates the hard structure of the skeleton. Although bone cells compose less than 2%of the bone mass, they are crucial to the function of bones. What does the skull do in the skeletal system? Human Anatomy Atlas 2022 +s May 2022 update, Interstitial, circumferential, and concentric lamellae. Superficially, bones are covered by a dense irregular connective tissue sheath known as the _______. Osteocytes are connected to one another within the canaliculi via gap junctions. A. interstitial lamellae B. trabeculae C. canals D. circumferential lamellae. The cells responsible for bone resorption, or breakdown, are the osteoclasts. Each epiphysis meets the diaphysis at the metaphysis. Curious to know if you also object to firefighters passing out candy from their trucks in parades, military jets doing flyovers at large sporting events, and the Oklahoma Dept of Wildlife Conservation running a very funny Twitter account. B) metaphysis. Therefore, they provide shape and structure to organisms. E) lamellae. As the functional and structural unit of compact bone, the osteon is responsible for the strength of the bone, the influx of nutrients into the bone, and waste removal from the bone. Fill in the blanks: Osteons are found only in (trabecular/dense) bone, while trabeculae are found only in (compact/spongy) bone. What type of bone is arranged in concentric layers? This seems like the same mindset that makes government employees pay for their own coffee at work. What bones articulate with the frontal bone? Compact bone (or cortical bone) forms the hard external layer of all bones and surrounds the medullary cavity, or bone marrow. a) Osteon. Compact bone is made of cylindrically-shaped osteons connected together. The central shaft of a long bone is the diaphysis. Why? This imparts a hard and dense texture to the compact . What part of a long bone is not covered by the periosteum? The surface features of bones vary considerably, depending on the function and location in the body. What are the physical state of oxygen at room temperature? However, compact bones also serve a function in storing and releasing calcium to the body when needed. The functional joint classification that a suture joint fits into is _______. 11. Dense regular B. Therefore, reconstruction of the osteon structure is . It is a disorder of the bone remodeling process that begins with overactive osteoclasts. What is the basic functional unit of compact bone? For compact bone, it is the osteon, or Haversian system. Compact bone tissue consists of units called osteons or Haversian systems. They differentiate and develop into osteoblasts. What is the function of the frontal bone? d. red bone marrow found within the bone. The best explanation of the difference between the two is that the spongy bones in terms of area can be found at the head . What bone forms the back and base of the cranium? Bones that surround the spinal cord are classified as _______ bones. Structure of Spongy Bone. Compact bone makes up roughly 80% of the total weight of bones in the human body, while spongy bone (also known as cancellous bone) makes up the remaining 20%. Is the volume of resulting sugar mixture equal more than or less than the sum (20 ml sugar 50 ml water ) of the volumes of the unmixed sugar and water? system is a microscopic, structural unit of compact bone also Most connective tissue, including bone, is highly vascular. (e) no particular event. d) spongy bones. Which anatomical structures in Jonah's compact bone house blood vessels (think about the osteon)? School Forsyth Technical Community College; Course Title BIO 168; Type. The spaces in the bony matrix where osteocytes exist are _____. What is the basic structural unit of compact bone tissue? Employees with RN Compact License are required to obtain Texas RN License within 90 days of hire date Bachelor's degree in nursing Minimum 3 years as a Bone Marrow Transplant Coordinator. It is also called as the Haversian system. Inherited traits are controlled by genes and the complete set of genes within an organism's genome (genetic material) is called its . copyright 2003-2023 Homework.Study.com. In what ways is the structural makeup of compact and spongy bone well suited to their respective functions? What is the major cell type visible in bone tissue? This is the proximal ulna with the. Table 6.3 reviews the bone cells, their functions, and locations. c) contains interconnecting plates called trabeculae. Search results for "Institute for Amorphous Studies Series" at Rakuten Kobo. Dense irregular connective tissue. Which of the following statements about bones is true? Like compact bone, spongy bone, also known as cancellous bone, contains osteocytes housed in lacunae, but they are not arranged in concentric circles. A) humerus B) parietal bone C) talus D) cervical vertebra. c) osteoblast. Fat is stored within the A) medullary cavity. The basic functional unit of compact bone is the: osteoblast osteon osteoclast osteocyte - Answered by a verified Tutor. See answer (1) Best Answer. The structural aspects of compact bone tissue are: 1. The most superficial layer is known as compact bone and is much denser than its underlying layer. All other trademarks and copyrights are the property of their respective owners. The basic functional unit of compact bone is the Haversian system or (a) osteocyte, (b) osteoclast, (c) osteon, (d) osseous matrix, (e) osseous lamellae. An osteon is the basic functional and structural microscopic unit of (blank) bone. Analytical cookies are used to understand how visitors interact with the website. Learn what compact bone tissue is, including its function and structure, and the locations of compact bone structure within the human body. Briefly identify and discuss the microscopic structures of compact bone. The parietal bones and occipital bone articulate at the [{Blank}] suture. d) Chromosome. The functional unit of compact bone is the osteon, which is made up of concentric rings of bone called lamellae surrounding a central opening called a Haversian canal, through which nerves and blood . What is the functional unit of spongy bone? b) contains concentric lamellae. What is the epiphyseal line? The basic functional unit of a mature compact bone. Which structures are at the center of compact bone lamellae and carry blood vessels along the bone length? Osteons are compact bone structural units. Which tarsal bone articulates with the tibia and fibula? Notice the spongy bone in the middle, and the compact bone towards the outer region. b. epithelium. The functional unit in compact bone is an OSTEON. Is it easy to get an internship at Microsoft? n/ (named for Clopton Havers) is the fundamental functional unit of much compact bone. What other bone helps the scapula function? Bone Tissue and the Skeletal System, Chapter 12. The Haversian canal contains small blood vessels responsible for the blood supply to osteocytes (individual bone cells). 1). 3. d) trabecular bone. D) epiphysis. This system allows nutrients to be transported to the osteocytes and wastes to be removed from them despite the impervious calcified matrix. Consider the extent of secondary fracturing with respect to where on the bone this is located. Osteons (the Haversian system) form structural and functional units of cortical bone. osteon is also known as the Haversian system and is composed of Get access to this video and our entire Q&A library, Compact Bone: Definition, Structure & Function. osteocytes. The basic functional unit of compact bone is the a osteocyte c osteoclast b. The osteon is the main functional unit of the compact bone and is composed of numerous Our experts can answer your tough homework and study questions. Osteons are several millimetres long . Its covered in the periosteum, a membrane that covers the entirety of the bone and is where muscles and tendons attach. An icon used to represent a menu that can be toggled by interacting with this icon. a. During growth, the metaphysis contains the epiphyseal plate, thesite of long bone elongation described later in the chapter. Perforating canals, also known as Volkmanns canals, run at right angles to central canals. Adipose tissue is stored within the A) medullary cavity. The basic functional unit of compact bone is the osteon. The spongy bone and medullary cavity receive nourishment from arteries that pass through the compact bone. (c) perineurium. The wider section at each end of the bone is called the epiphysis (plural = epiphyses), which is filled internally with spongy bone, another type of osseous tissue. Sirona PCB DWV Compact water unit wiring, spare. The basic functional unit of compact bone is the Haversian system. Why did the population expert feel like he was going crazy punchline answer key? (c) Periosteum. The connective tissue covering around individual axons is the: (a) endoneurium. a. Spongy bone b. Irregular bone c. Compact bone d. Trabecular bone. Check out this video! Lamellae (singular: lamella) are layers of matrix. Woven bone lacks A. Osteocytes B. Trabeculae C. Compact Bone D. Red Bone Marrow, Locate: a. Lamellae b. Circumferential lamellae c. Periosteum d. Compact bone e. Osteon f. Endosteum g. Central canal h. Spongy bone. Compact bone is dense and composed of osteons, while spongy bone is less dense and made up of trabeculae. The walls of the diaphysis are compact bone. diameter is just beginning, (d) the bone is fractured at the location, The hormones that coordinate the storage, absorption, and excretion, of calcium ions are (a) growth hormone and thyroxine, (b) calcitonin, The nonpathologic loss of bone that occurs with aging is called, and parathyroid hormone, (c) calcitriol and cholecalciferol, (d) estrogens. rings called concentric lamella. The Tissue Level of Organization, Chapter 6. Bone matrix is crisscrossed by blood vessels and nerves and also contains specialized bone cells that are actively involved in metabolic processes. They are cylindrical shaped. Areolar 28th November 2022. Anatomy & Physiology by Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Matern, Katie Morrison-Graham, Devon Quick & Jon Runyeon is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License, except where otherwise noted. In recent years, emerging evidences have shown that the osteon structure (including osteocytes, lamellae, lacunocanalicular network, and Haversian canals) plays critical roles in bone mechanics and turnover. Necessary cookies are absolutely essential for the website to function properly. These cells are part of the outer double layered structure called the periosteum (peri = around or surrounding). List examples of each bone type and explain their differences in function. While some people with Pagets disease have no symptoms, others experience pain, bone fractures, and bone deformities (Figure 6.3.9). For example, collagen provides tensile strength and hydroxyapatite crystals provide the bone with compressive strength. b. periosteum c. endosteum d. epiphysis. They project into the medullary cavity from the internal circumferential lamellae of the cortical bone. b. Ligment. Also, they support the functions of muscles. What is the basic structural unit of a bone? What are the major effects of parathyroid hormone? c) osteocytes. c. osteoclast. This canal contains one or more blood vessels that carry blood to and from the osteon. Spongy bone is also called ______. Q&A. Articulations are places where two bones meet. The basic structural unit of compact bone is the ___________________. a. Trabeculae. What are some characteristics of spongy bone? How did the world community respond to genocides after World War II? 4 What is the structure and function of compact bone? The open spaces of the trabeculated network of spongy bone allow spongy bone to support shifts in weight distribution, which is the function of spongy bone. 9. Which feature is found in both cartilage and bone? It does not store any personal data. This matrix is made of both organic and inorganic materials. The basic functional unit of compact bone is the a. The cookie is used to store the user consent for the cookies in the category "Performance". An osteon/haversian system. Which of the following is characteristic of spongy bone tissue, but not of compact bone tissue? Compact Bone: Compact bones are also known as cortical bones. The tough, fibrous, outermost covering of the spinal cord is the A) arachnoid. In these studies, a dye containing a radioactive ion is injected into the body. C. Compact bone does not require oxygen, as no cells exist within it. True False. What causes the osteoclasts to become overactive? Wiki User. d. fibrous connective tissue. Osteogenic cells develop into osteoblasts. What is the function of the sphenoid bone? compact bone, also called cortical bone, dense bone in which the bony matrix is solidly filled with organic ground substance and inorganic salts, leaving only tiny spaces (lacunae) that contain the osteocytes, or bone cells. b) compact bone. The entire skeleton is laid down as a model before ossification sets in to harden it into bone. What is the functional unit of the circulatory system? Some scientists believe Pagets disease is due to an as-yet-unidentified virus. What is the role of bone in calcium homeostasis? Compact bones are also known as cortical bones. Item Code: Sirona23-6462498 Sirona23-6462498 Lacunae within the lamellae contain osteocytes. Copy. Compact bone and spongy bone are components of the osseous. A teacher walks into the Classroom and says If only Yesterday was Tomorrow Today would have been a Saturday Which Day did the Teacher make this Statement? The cookies is used to store the user consent for the cookies in the category "Necessary". Each osteon is also composed of a number of different cells responsible for the maintenance of the bones, including osteocytes and osteoblasts. Describe the structure of compact and cancellous (spongy) bone. What is the function of cartilage in adult bones? Use the links at the bottom of any email to manage the type of emails you receive or to unsubscribe. The open spaces of the trabeculated network of spongy bone allow spongy bone to support shifts in weight distribution, which is the function of spongy bone. The epiphyses, which are wider sections at each end of a long bone, are filled with spongy bone and red marrow. Due to the strong nature of compact bone, compared to spongy bone, it is the preferred tissue for strength. Fluid, Electrolyte, and Acid-Base Balance, Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Matern, Katie Morrison-Graham, Devon Quick & Jon Runyeon, https://commons.wikimedia.org/w/index.php?curid=20904735, Creative Commons Attribution-ShareAlike 4.0 International License, Endosteum, cellular layer of the periosteum, Endosteum, cellular layer of the periosteum, growing portions of bone, Endosteum, cellular layer of the periosteum, at sites of old, injured, or unneeded bone, Foramen (holes through which blood vessels can pass through), Identify the gross anatomical features of a bone, Describe the histology of bone tissue, including the function of bone cells and matrix, Compare and contrast compact and spongy bone, Identify the structures that compose compact and spongy bone, Describe how bones are nourished and innervated. The epiphyseal plate, a layer of hyaline cartilage, is replaced by osseous tissue as the organ grows in length. Compact bone is formed from a number of osteons, which are circular units of bone material and blood vessels. a. dense regular b. bone c. blood d. areolar e. simple columnar, Bone tissue can be described as the _____. Bluetooth bone conduction headphones use bones to transmit sound, while common headphones are air conduction headphones that use air to transmit sound. E) lacunae. Tendons and ligaments attach to bones at the periosteum. (d) Canaliculi. Dense irregular This enables better protection of the product and lower shipping costs. . Biologydictionary.net Editors. On the outside of bones there is another layer of cells that grow, repair and remodel bone as well. These cavities are known as: A. Lamellae B. Lacuna C. Osteons D. Perichondria. Osteocytes are located within lacunae, which are in turn located in lamellae. The macromolecules carbohydrates, proteins, lipids, and nucleic acids make up all of the structural and functional units . Because the matrix is mineralized (rather than aqueous), nutrients and waste cannot diffuse through the matrix. [29] Select an answer and submit. If the articular cartilage at the end of one of your long bones were to deteriorate, which is actually what happens in osteoarthritis, you would experience joint pain at the end of that bone and limitation of motion at that joint because there would be no cartilage to reduce friction between adjacent bones and there would be no cartilage to act as a shock absorber. d) a bony matrix with hyaline cartilage. c. simple squamous. The new unit kept the features that made players fall for the original DL4 but shrunk down the massive enclosure into a more pedalboard-friendly format while adding a few valuable extras. Compact bone (or cortical bone) forms the hard external layer of all bones and surrounds the medullary cavity, or bone marrow. (e) Marrow cavity. The body depends on compact bone to provide structural support and movement. copyright 2003-2023 Homework.Study.com. What is CAGR of Nerve Repair And Regeneration Devices Market? This design is also helpful for people who move because it permits more compact shipping and storage. The osteoblast is the bone cell responsible for forming new bone and is found in the growing portions of bone, including theendosteum and the cellular layer of the periosteum. The structure of bone tissue suits the function. Osteocytes are primarily ''housed'' within [{Blank}] in compact bone. Flat bones consist of two layers of compact bone surrounding a layer of spongy bone. What are the Similarities Between Compact Bone and Spongy Bone? Spongy bone is used for more active functions of the bones, including blood cell production and ion exchange. The structural unit of compact bone that consists of an elongated cylinder that runs parallel to the long axis of bone is known as a(n): A. canal B. osteon C. osteoid D. medullary cavity; The functional unit of skeletal muscle is the: a. sarcolemma. What bone cells are involved with osteogenesis imperfecta? Bone matrix provides bones with their basic structure. A teacher walks into the Classroom and says If only Yesterday was Tomorrow Today would have been a Saturday Which Day did the Teacher make this Statement? 1) it is composed of dense irregular tissue. Skeletal system part 1. c. spongy bone in the center of the bone. The sound leakage problem of bluetooth bone conduction headphones is mainly due to the fact that they convert sound into mechanical vibration through the sound unit, and vibrate the bone to transmit sound. In addition, the spaces in some spongy bones contain red bone marrow, protected by the trabeculae, where hematopoiesis occurs. d. Tendon. The acini is the functional and structural unit of the liver consisting of roughly hexagonal plates of hepatocytes. The basic functional unit of compact bone is the: a. osteoblast. Bone a. transitional. They generally run parallel to the surface of the bone. Though people like Father of Microbiology Antonie van Leeuwenhoek observed some parts of osteons, Clopton Havers was the first to study osteons in depth, publishing the first description of an osteon in his 1691 book, Osteologia nova. The process of bone growth at the epiphyseal cartilage is similar to. "Compact Bone. What is the function of the zygomatic bone? The expanded ends of bones are called epiphyses. These units allow compact bone to remain hard and compact while still receiving nutrients from the body and disposing of waste through the same channels. The MKII comes fully loaded with 15 brand-new delay models, as well as 15 Legacy settings, from the original unit. All other trademarks and copyrights are the property of their respective owners. Due to the strong nature of compact bone, compared to spongy bone, it is the preferred tissue for strength. Name the major functions of the skeletal system. 3) Mesoderm. Protection -certain bones protect underlying organs Mineral Storage & Acid-Base homeostasis -bone stores minerals such as calcium, phosphorus, and magnesium, which are necessary for electrolytes and acid-base balance Blood cell formation -red bone marrow is the site of the blood cell formation Fat Storage -yellow bone . Adipose In long bones, as you move from the outer cortical compact bone to the inner medullary cavity, the bone transitions to spongy bone. osteon or Haversian system. Want a quick review of the structure of bone tissue? Spongy bone, also known as cancellous bone, is composed of a lattice-like arrangement of osteocytes known as trabeculae. It provides protection and strength to bones. Read free previews and reviews from booklovers. What is the function of the parietal bone? The functional unit of the respiratory system is the _______. b. simple columnar. This cookie is set by GDPR Cookie Consent plugin. Compact bone, also known as cortical bone, is a denser material used to create much of the hard structure of the skeleton. Corporate author : International Scientific Committee for the drafting of a General History of Africa Person as author : Ki-Zerbo, Joseph [editor] Study now. Osteoclasts engage in bone resorption. The outer surface of bone, except in regions covered with articular cartilage, is covered with a fibrous membrane called the periosteum. Compact bone is the denser, stronger of the two types of osseous tissue (Figure 6.3.6). c) Lamellae. The periosteum also contains blood vessels, nerves, and lymphatic vessels that nourish compact bone. a. osteogenic cells b. osteoblasts c. osteoclasts d. white blood cells, MATCHING TYPE: A. When in doubt, a piece of compact bone can be held under a microscope to look for concentric osteons with the central Haversian . The structural unit of compact bone is the _______. The Cellular Level of Organization, Chapter 4. The endosteum also lines each central canal, allowing osteons to be removed, remodeled and rebuilt over time. What is the functional unit of nervous tissue? As seen in the image below, compact bone forms the cortex, or hard outer shell of most bones in the body. Table 6.2 describes the bone markings, which are illustrated in (Figure 6.3.4). Learn more here. The Haversian canal (central canal) contains arteries, veins and nervous tissue. What are the maintenance cells in bone tissue? The osteoblasts responsible for making bone cover the fracture with new material C. The bone must be resorbed by the body, and a new bone grown in its place, Biologydictionary.net Editors. The osteocytes in spongy bone are nourished by blood vessels of the periosteum that penetrate spongy bone and blood that circulates in the marrow cavities. (a) irregular (b) sesamoid (c) flat (d) short. Compact bone forms the cortex or hard outer shell of most bones in the body of every vertebrate animal. or (a) osteocyte, (b) osteoclast, (c) osteon, (d) osseous matrix, reason that osteoporosis accelerates after menopause in, women is (a) reduced levels of circulating estrogens, (b) reduced, levels of vitamin C, (c) diminished osteoclast activity, (d) increased, The vitamins essential for normal adult bone maintenance and repair. For forensic anthropology. They can communicate with each other and receive nutrients via long cytoplasmic processes that extend through canaliculi (singular = canaliculus), channels within the bone matrix. [43} A. Antemortem B. Perimortem C. Postmortem. True False (If false, correct it to make it true. In what ways is the structural makeup of compact and spongy bone well suited to their respective functions? b. Haversian systems c. Osteocytes in lacunae d. Lamellae, 1. epiphysis 2. periosteum 3. spongy bone 4. epiphyseal plate 5. perforating fibers 6. diaphysis. d. stratified squamous. Holes are openings or depressions in the bones. Each central canal runs parallel to the long axis of the bone. Blood. When the bone stops growing in early adulthood (approximately 1821 years), the epiphyseal plate becomes an epiphyseal line seen in the figure. What forms the largest portion of the coxal bone? Compact bone highlighted on Human Anatomy Atlas 2022 +'s sectioned femur model. The basic functional unit of compact bone is the: A typical long bone is composed of two main layers. The trabeculae are covered by the endosteum, which can readily remodel them. D) epidural block. When the headphone is working, the shell of the headphone will be vibrated together by the sound unit, and the shell will vibrate the . Stratified squamous C. Simple cuboidal D. Pseudostratified E. Transitional. Biology Dictionary. The diagram above shows a longitudinal view of an osteon. Spongy bone, also known as cancellous bone or trabecular bone, is a very porous type of bone found in animals. osteon The diagram above shows a transverse view of an osteon (Haversian system) - the basic unit of compact bone. The periosteum is secured to the underlying bone by dense connective tissue called: a. perforating (Sharpey's) fibers b. Volkmann's canals c. a bony matrix with hyaline cartilage d. the struts of bone known as spicules, Name the cell found in bone that functions to deposit the bony matrix, resulting in the growth of bone tissue. An epithelial built to stretch is: A. The periosteum covers the entire outer surface except where the epiphyses meet other bones to form joints (Figure 6.3.2). Pagets disease usually occurs in adults over age 40. Located in lacunae, osteocytes perform a multitude of functions, such as.
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