Like osteoblasts, osteocytes lack mitotic activity. It is constantly remodeled by the work of osteoblasts and osteoclasts. (C) Hinge Joint Bone tissue (osseous tissue) differs greatly from other tissues in the body. Bone markings depend on the function and location of bones. Trabeculae form a mesh-like network of bony spicules of varying size that are aligned along regions of biomechanical stress. (a) osteoblasts secrete osteoid The patella (knee cap) is an example of a sesamoid bone. Spongy bone is prominent in areas of bones that are not heavily stressed or where stresses arrive from many directions. for anything that classifies as a bone, yes. Its a soft tissue that in adults may be mostly fat. Determine whether the given matrix is orthogonal. The cells in the compact bone are arranged in multiple microscopic columns, whereas the cells in the spongy bone are arranged in a looser, more open network. The lacunae and their accompanying osteocytes are housed in the trabeculae matrix of the bone along with the bone marrow. Red bone marrow is commonly found in spongy bone within adults The majority of bones development from a cartilage template through a process called endochrondal ossification The osteoblasts help break down the extracellular matrix of bone tissue Compact bone is organized in structures called osteons Previous question Next question these (e) none of these, Which of the listed events occurs thirdly during It is found in most areas of bone that are not subject to great mechanical stress. Spongy bone is also called cancellous or trabecular bone. So let's take a look inside. Like compact bone, spongy bone, also known as cancellous bone, contains osteocytes housed in lacunae, but they are not arranged in concentric circles. Legal. What non-osseous tissues are found in bones? Four types of cells are found within bone tissue. Get instant access to this gallery, plus: Introduction to the musculoskeletal system, Nerves, vessels and lymphatics of the abdomen, Nerves, vessels and lymphatics of the pelvis, Infratemporal region and pterygopalatine fossa, Meninges, ventricular system and subarachnoid space, Bone substance composed of thin intersecting laminae, found internal to compact bone, Reduces density and weight of bone, forms the site of hematopoiesis due to the presence of red bone marrow. X-rays may show bone deformities or areas of bone resorption. Which of the following statements about spongy bone are true? Bone Structure - Anatomy & Physiology - University of Hawaii Blood vessels within red bone marrow supply osteocytes of spongy bone and aid in removing waste products. we're going to be talking about the microscopic structure of bone and in particular, we're Perichondrium cells differentiate into osteogenic cells then into osteoblasts 3. It presents (possesses) trabeculae O c. It may contain red bone marrow O d. It is more prone to fracture with osteoporosis O e. "Difference between Spongy Bone and Compact Bone. These osteocytes have these Which of the following is NOT true about spongy bone? Bone: Histology, constituents and types | Kenhub replacing cartilage. The periosteum forms the outer surface of bone, and the endosteum lines the medullary cavity. Bone is a very active tissue. Bone Classification and Structure | Anatomy and Physiology | | Course Hero Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you top results faster. How many bones are found in an adult human skeleton? Bones: Types, structure, and function - Medical News Today Trabeculae are spaces created in the tissue by thin areas of osteoblast cells. (D) wrists, What body part has a joint that works in a manner similar to a door? Bisphosphonates, drugs that decrease the activity of osteoclasts, are often used in the treatment of Pagets disease. can you actually explain the term osteon? the innermost portion of bone marrow. Another word for these osteons Which of the following is not found in both spongy and that if you take a look at spongy bone, that it looks pretty much a lot like a sponge and Bone is composed o, Posted 5 years ago. Osteoclasts develop from monocytes and macrophages and differ in appearance from other bone cells. Areas of bone resorption have an affinity for the ion, so they will light up on the scan if the ions are absorbed. In addition, blood levels of an enzyme called alkaline phosphatase are typically elevated in people with Pagets disease. of this spongy network in the center of the bone is that of making the bone lighter. As its name suggests, spongy bone is porous like a sponge, containing an irregular network of spaces. If osteoblasts and osteocytes are incapable of mitosis, then how are they replenished when old ones die? All content published on Kenhub is reviewed by medical and anatomy experts. The osteocytes receive their nutrition from the central (Haversian) canal via little canals called canaliculi. Bone tissue (osseous tissue) differs greatly from other tissues in the body. Although bone cells compose a small amount of the bone volume, they are crucial to the function of bones. (A) Bone (B) Cartilage (C) Bone Marrow The trabeculae may appear to be a random network, but . Chapter 5: anatomy Flashcards | Quizlet The mineral content of blood must be tightly regulated to ensure proper functioning of the muscles and nervous system. Aprojectionis an area of a bone that projects above the surface of the bone. It forms the relatively softer core of the bones that is filled with marrow. Bone Tissue and the Skeletal System, Chapter 12. What risks are there in donating bone marrow? Excellent stuff bones! Spongy bone and compact bone make up the long bones of the human skeleton. They differentiate and develop into osteoblasts. Which of the following contains nerves and blood vessels and runs through the compact bone? A long bone has two parts: thediaphysisand theepiphysis. These surfaces tend to conform to one another, such as one being rounded and the other cupped, to facilitate the function of the articulation. Compact bone forms the hard outer layer of bone while spongy bone forms the porous interior. While compact bone is denser and has fewer open spaces, spongy bone is ideal for making and storing bone marrow within the lattice-like trabeculae network. are separated by _?_. So each of these lacunae is D. It is found in the bones of joints. e. Nutrients travel from the Haversian canal to (C) osteoclasts Compact bone, it's no communicate with each other and exchange nutrients and Flat bones, like those of the cranium, consist of a layer ofdiplo(spongy bone), lined on either side by a layer of compact bone (Figure3). canaliculi (e) osteocytes maintain the surrounding matrix, Which of the listed events occurs fourthly during The osteocytes are trapped within their lacuane, found at the borders of adjacent lamellae. A) There is blood-forming marrow in most short bones of an adult. The arteries enter through thenutrient foramen(plural = foramina), small openings in the diaphysis (Figure9). B) There is blood-forming marrow in the diaphysis of most long bones of an adult. Holes are openings or depressions in the bones. The epiphyseal plate, a layer of hyaline cartilage, is replaced by osseous tissue as the organ grows in length. The Chemical Level of Organization, Chapter 3. Bone tissue is generally classified as compact or spongy bone. This cell produces the boney matrix, releasing it outside of the cell. Biologydictionary.net Editors. (B) thumb see with the naked eye. The outer walls of the diaphysis (cortex, cortical bone) are composed of dense and hard compact bone, a form of osseous tissue. (C) elbow In a growing long bone, the epiphyses and the diaphysis "Spongy Bone." C) The sternum (breastbone) is a good source of blood-forming tissue. Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bones overall function. Due to the strong nature of compact bone, compared to spongy bone, it is the preferred tissue for strength. Bones of the pelvis, skull, spine, and legs are the most commonly affected. bone that is on the outermost that you can actually (a) short. A) Provides support for certain soft tissues B) Synthesizes red blood cells C) Forms gliding surface at articulations D) Serves as model for bone formation B What is the function of cartilage located in the epiphyseal plates? Osteoclasts _?_. Figure6. or perforating canals. (C) Osteoblasts concentric layers of bone, or sheets really, that Compact bone tissue forms the extremely hard outside layer of bones. Accessibility StatementFor more information contact us atinfo@libretexts.org. Retrieved from https://biologydictionary.net/difference-spongy-bone-compact-bone/. Here, we basically have a cross Learning anatomy is a massive undertaking, and we're here to help you pass with flying colours. Recent origin of low trabecular bone density in modern humans. Each ring of the osteon is made of collagen and calcified matrix and is called a lamella (plural = lamellae). This process also occurs in the liver and spleen. Instead, the lacunae and osteocytes are found in a lattice-like network of matrix spikes called trabeculae (singular = trabecula) (Figure 6.3.8). Which of the following statements about bone is not. Select one:1 a. Direct link to Isha Ingole's post what are cartilage bones , Posted 4 years ago. Anatomy & Physiology by Lindsay M. Biga, Staci Bronson, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Matern, Katie Morrison-Graham, Kristen Oja, Devon Quick & Jon Runyeon is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License, except where otherwise noted. Anatomy chapter 6 Flashcards | Chegg.com osteon is the functional unit of mature compact bone (aka Haversian system), describe microscopic features ofosseous tissue to help longbones without breaking, How are the Volkmann related to the Harversian canals, https://en.m.wikipedia.org/wiki/Cancellous_bone, https://depts.washington.edu/bonebio/ASBMRed/structure.html. 1. Anatomy of a Long Bone. Blood vessels within red bone marrow supply osteocytes of spongy bone and aid in removing waste products. Question: QUESTION 9 Which of the following statement (s) is NOT TRUE about spongy bone? endosteum (c) periosteum (d) osteocytes in lacunae This rapid production is made possible by the highly vascularized nature of the spongy bone, which can deliver adequate amounts of the glucose, lipids, amino acids and trace elements required to make red blood cells. Difference between Spongy Bone and Compact Bone - Biology Dictionary Besides cortical and spongy bone tissues, bones contain several other tissues, including blood vessels and nerves. Last reviewed: November 10, 2022 And the overall effect Direct link to Joanne's post The osteocyte, when immat, Posted 7 years ago. Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide a surface for inorganic salt crystals to adhere. These cells are part of the outer double layered structure called the periosteum (peri = around or surrounding). You can see these tissues in Figure \(\PageIndex{2}\). The vessels and nerves of spongy bone travel through the spaces between trabeculae and do not need separate passageways. C. It is less dense than compact bone. The vertebrae and the hip bones are examples of _?_ bones. Its considered a delicacy in some cuisines. Long bones are characterized by a shaft that is much longer than it is wide and by a rounded head at each end of the shaft. Figure9. J Mater Sci Mater Med. (a) trabeculae composed of lamellae (b) spaces lined with Whenever you see the Determination of composition and structure of spongy bone tissue in human head of femur by Raman spectral mapping. Bone Structure | Anatomy and Physiology I - Lumen Learning The trabeculae are covered by the endosteum, which can readily remodel them. On the outside of bones there is another layer of cells that grow, repair and remodel bone as well. Flat bones are thin and generally curved, with two parallel layers of compact bone sandwiching a layer of spongy bone. Bisphosphonates, drugs that decrease the activity of osteoclasts, are often used in the treatment of Pagets disease. spongy bone is 10 times that of the outer layer of compact bone. It is smooth, hard and heavy compared to spongy bone and it is also white in appearance, in contrast to spongy bone which has a pink color. Reviewer: Find reliable sources to answer the following questions: Watch this entertaining and fast-paced Crash Course video to further explore bone structure: Check out this video to learn more about bone remodeling: This page titled 14.4: Structure of Bone is shared under a CK-12 license and was authored, remixed, and/or curated by Suzanne Wakim & Mandeep Grewal via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request. a. Epiphyseal plates fuse during puberty. compact bone different from spongy bone, is that Osteoblasts replace calcifies cartilage with early sponge bone Firstly it is weaker but more flexible than cortical (compact) bone which it is very hard and strong but ridged (generally things that are ridged and hard do well under compression but not tension/flexure), so areas that come under flexure (eg ribs, ends of long bones) may benefit. The Cellular Level of Organization, Chapter 4. These vessels and nerves branch off at right angles through aperforating canal, also known as Volkmanns canals, to extend to the periosteum and endosteum. Chapter 6 Flashcards | Quizlet Fibroblasts produce collagen fibers that connect the broken bone ends, while osteoblasts start to form spongy bone. Red bone marrow-source of blood cells c. Osteons-tubular units of compact bone d. Spongy bone-makes up the shaft of a long bone e. Lacunae-tiny chambers in concentric circles around a central canal The correct answer is: Spongy bone-makes up the shaft of a long bone Tendons and ligaments also attach to bones at the periosteum. matrix (d) all of these (e) none of these, Periosteum: (a) is an anchoring site for tendons and The spongy bone of flat and irregular bones contains:A osteons to produce new boneB adipose tissue to store energyC fibrous connective tissue for added strengthD red bone marrow to produce blood cells D In the embryo, the bones that are first made of fibrous connective tissue are the bones of the:A rib cageB arms and legsC backboneD skull D Osteoblasts build the bone collar on the external surface of the bone. (a) This cross-sectional view of compact bone shows the basic structural unit, the osteon. Which of he following is true about red marrow? red bone marrow, trabeculae, no osteons A child who enters puberty several years later than the average age is generally taller than average as an adult. All rights reserved. The lacunae are connected by caniculi, or little canals. cartilage matrix. (n.d.). In osseous tissue which characteristics apply to spongy bone? When occurring in the skull, Pagets disease can cause headaches and hearing loss. They are a poetic reminder of where we came from, and how something so preposterous as having live active cells interacting in a material that appears so inanimate might actually be true. Figure4. central haversian canal to these empty spaces The hydroxyapatite crystals give bones their hardness and strength, while the collagen fibers give them flexibility so that they are not brittle. In this region, the epiphyses are covered witharticular cartilage, a thin layer of cartilage that reduces friction and acts as a shock absorber. Compare and contrast the two main types of osseous tissue. 2. Watch this video to see the microscopic features of a bone. The walls of the diaphysis are composed of dense and hardcompact bone. Imagine laying a heavy-framed picture flat on the floor. The Peripheral Nervous System, Chapter 18. chapter 6 quiz Flashcards by megan hicks | Brainscape I would honestly say that Kenhub cut my study time in half. It is found in the long bones and it is surrounded by compact bone. A. Compact bone is the denser, stronger of the two types of osseous tissue (Figure 6.3.6). What is the skeleton of a newborn baby mainly composed of? The compact bone is the main structure in the body for support, protection, and movement. really just an empty space or osteocytes or bone cells. bones (c) are responsible for releasing calcium from bone what is the trabeculae of a spongy bone made of? Solved QUESTION 9 Which of the following statement (s) is NOT - Chegg (b) In this micrograph of the osteon, you can clearly see the concentric lamellae and central canals. The surface features of bones vary considerably, depending on the function and location in the body. Spongy bone is prominent in areas of bones that are not heavily stressed or where stresses arrive from many directions. The walls of the diaphysis are compact bone. As the secreted matrix surrounding the osteoblast calcifies, the osteoblast become trapped within it; as a result, it changes in structure and becomes anosteocyte, the primary cell of mature bone and the most common type of bone cell. (A) Shoulder joint As described earlier, canaliculi connect with the canaliculi of other lacunae and eventually with the central canal. Spongy bone is home to the bone marrow and hematopoietic stem cells that differentiate into red blood cells, white blood cells and platelets. that cause the matrix to calcify. Chapter 1. Compare and contrast yellow bone marrow and red bone marrow. Most bones of the limbs, including those of the fingers and toes, are long bones. The cellular layer is adjacent to the cortical bone and is covered by an outer fibrous layer of dense irregular connective tissue (see Figure 6.3.4a). The Cardiovascular System: Blood, Chapter 19. The study was designed to determine at what point human in evolution the trabecular bone density in humans decreased. Red bone marrow also forms the site forhematopoiesis. Finally as you say having hollow bones would be lighter than having spongey bone however there needs to be a compromise to provide enough structural integrity without being too heavy, which combining a spongy flexible interior and hard tough exterior provides (think of a knights armour chain mail covered in steel plate armour).
