on October 21, 2023
Diseased or damaged bone marrow can be replaced by donated bone marrow cells, which help treat and often cure many life-threatening conditions, including leukemia, lymphoma, sickle cell anemia, and thalassemia. As a result, trabecular bone has about 10 times the surface area of compact bone. A long bone has two main regions: the diaphysis and the epiphysis (Figure 6.3.1). is the bone cell responsible for forming new bone and is found in the growing portions of bone, including the periosteum and endosteum. It presents (possesses) trabeculae O c. It may contain red bone marrow O d. It is more prone to fracture with osteoporosis O e. The shaft of a long bone is also called the: (a) proximal, The marrow space in the shaft of a long bone is called the. Spongy bone is usually located at the ends of the long bones (the epiphyses), with the harder compact bone surrounding it. Still, most doctors feel that the benefits of bisphosphonates more than outweigh the risk; the medical professional has to weigh the benefits and risks on a case-by-case basis. Areas of bone resorption have an affinity for the ion, so they will light up on the scan if the ions are absorbed. The medullary cavity has a delicate membranous lining called the endosteum. of bone fractures (c) is involved in bone growth (d) all of Spongy bone is composed of trabeculae that contain the osteocytes. Flat bones consist of two layers of compact bone surrounding a layer of spongy bone. a. Epiphyseal plates fuse during puberty. (a) osteocytes (b) osteons (c) canaliculi (B) thumb The results of the research show that lower trabecular bone density in modern humans is a recent event, and is probably caused by increasingly sedentary lifestyles and a reliance on technology. (D) Pivot Joint, Saddle joints are located That is called compact bone. Figure5. Why? (A) Bone (B) Cartilage (C) Bone Marrow The trabeculae of spongy bone tend to form along lines of stress, giving the bone strength and flexibility in that area. c. Blood vessels, dragging osteoblasts and marrow It is the location of the bone marrow. There are three general classes of bone markings: (1) articulations, (2) projections, and (3) holes. Blood vessels travel through the harder compact bone to the spongy bone, supplying it with the materials necessary to create blood cells. A. It is found in most areas of bone that are not subject to great mechanical stress. Red marrow fills the spaces in some bones. In osseous tissue which characteristics apply to spongy bone? Compact bone stores yellow bone marrow, which is composed primarily of fat, in its medullary cavity. In addition to the blood vessels, nerves follow the same paths into the bone where they tend to concentrate in the more metabolically active regions of the bone. Like compact bone, spongy bone, also known as cancellous bone, contains osteocytes housed in lacunae, but they are not arranged in concentric circles. Anatomy and Physiology Chapter 6 Flashcards | Quizlet Compact bone, it's no As described earlier, canaliculi connect with the canaliculi of other lacunae and eventually with the central canal. The Cardiovascular System: Blood Vessels and Circulation, Chapter 21. It's made up of CaCo3, osteocalcin, osteopalpin. Although compact and spongy bone are made of the same matrix materials and cells, they are different in how they are organized. via gap junctions which allow these cells to All of these structures plus more are visible in Figure \(\PageIndex{4}\). Question: QUESTION 9 Which of the following statement (s) is NOT TRUE about spongy bone? Each osteocyte is located in a small cavity in the bone tissue called a lacuna (lacunae for plural). osteogenesis or ossification ? The walls of the diaphysis are composed of dense and hardcompact bone. in fact, because of all these various trabeculae or cavities, the surface area of The trabecular network of spongy bone aids in reducing bone weight and density and functions to transfer force from the articular surface of cortical bone. A hole is an opening or groove in the bone that allows blood vessels and nerves to enter the bone. There are several different types of tissues in bones, including two types of osseous tissues. Bone tissue is generally classified as compact or spongy bone. Select one:1 a. 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. The sternum, ribs, and bones forming the cranium are, Most bones of the limbs are _?_ bones. Normal leg bones are relatively straight, but those affected by Pagets disease are porous and curved. are separated by _?_. of this spongy network in the center of the bone is that of making the bone lighter. When occurring in the skull, Pagets disease can cause headaches and hearing loss. Spongy bone is the inner framework of the bone in which the bone marrow resides. D. It is found in the bones of joints. word lacuna or lacunae, you should think empty space. - [Instructor] All right so The periosteum forms the outer surface of bone, and the endosteum lines the medullary cavity. matrix (d) all of these (e) none of these, Periosteum: (a) is an anchoring site for tendons and Direct link to SofiyaMarkova's post Cartilage Each epiphysis meets the diaphysis at the metaphysis. Compact bone is dense and composed of osteons, while spongy bone is less dense and made up of trabeculae. A&P Chapter 7 Flashcards | Quizlet (a) work with osteoblasts to remodel and Which of the following is NOT a function of bones in the human skeletal system? "Spongy Bone." Their shapes are irregular and complicated. Bone Flashcards | Quizlet Spongy bone is softer and weaker than compact bone, but is also more flexible. 12. Bone Structure | Anatomy and Physiology I - Lumen Learning Which of the following is not associated with spongy bone The two layers of compact bone and the interior spongy bone work together to protect the internal organs. Excellent stuff bones! In general, their size and shape is an indication of the forces exerted through the attachment to the bone. Which of the following statements about bone is not. Which of the following persists for life Articular cartilage Process of ossification 1. (C) Support the skin Retrieved from https://biologydictionary.net/spongy-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. Running down the center of each osteon is thecentral canal, or Haversian canal, which contains blood vessels, nerves, and lymphatic vessels. Classifications of Bones (A) shoulder Direct link to Ashmita Pilania's post Can someone please explai, Posted 5 years ago. (Micrograph provided by the Regents of University of Michigan Medical School 2012). They branch out from the 38.5: Bone - Introduction - Biology LibreTexts Four types of cells are found within bone tissue: osteoblasts, osteocytes, osteogenic cells, and osteoclasts (Figure5). Compact bone is dense so that it can withstand compressive forces, while spongy bone (also called cancellous bone) has open spaces and is supportive, but also lightweight and can be readily remodeled to accommodate changing body needs. The hydroxyapatite crystals give bones their hardness and strength, while the collagen fibers give them flexibility so that they are not brittle. (0011213513051312130)\left(\begin{array}{rrr}{0} & {0} & {1} \\ {-\frac{12}{13}} & {\frac{5}{13}} & {0} \\ {\frac{5}{13}} & {\frac{12}{13}} & {0}\end{array}\right) replace the existing cartilage with bone (d) the epiphysis Bone tissue (osseous tissue) differs greatly from other tissues in the body. The answer lies in the properties of a third category of bone cellsthe osteogenic (osteoprogenitor) cell. Osteogenic cells are undifferentiated and develop into osteoblasts. (Ignore the cost of fatty acid activation.). On the outside of bones there is another layer of cells that grow, repair and remodel bone as well. intremembranous ossification ? really just an empty space or osteocytes or bone cells. When the bone stops growing in early adulthood (approximately 1821 years), the cartilage is replaced by osseous tissue and the epiphyseal plate becomes an epiphyseal line. Reviewer: 14.4: Structure of Bone - Biology LibreTexts Another word for these osteons 2. (2017, November 05). Osteoclasts engage in bone resorption. Direct link to Izzati Aqilah's post Whats are the differences, Posted 7 years ago. and the diaphysis synostose (e) all of these. So each of these osteons 2. The epiphyses, which are wider sections at each end of a long bone, are filled with spongy bone and red marrow. Now the inner most portion of this bone is made up of, what is Microscopically compact bone has the features elucidated in the video (osteons), while the spongy bone is less dense and shows a framework of trabeculae. Reading time: 2 minutes. The outer walls of the diaphysis (cortex, cortical bone)are composed of dense and hard compact bone, a form of osseous tissue. 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. The basic microscopic unit of bone is an osteon (or Haversian system). All rights reserved. Spongy (Cancellous) Bone Blood and Nerve Supply Shape Classification The 206 bones that compose the adult skeleton are divided into five categories based on their shapes (Figure 6.6). d. Blood vessels enter osteons by way of Volkmann's The periosteum also contains blood vessels, nerves, and lymphatic vessels that nourish compact bone. that can become osteoblasts (b) is necessary for the repair Bisphosphonate treatment can reduce the overall risk of deformities or fractures, which in turn reduces the risk of surgical repair and its associated risks and complications. Direct link to Joanne's post The osteocyte, when immat, Posted 7 years ago. Inside the diaphysis is the medullary cavity, which is filled with yellow bone marrow in an adult. called, spongy bone, which is otherwise known as 6.3 Bone Structure - Anatomy and Physiology 2e | OpenStax (B) Knee joint In addition, blood levels of an enzyme called alkaline phosphatase are typically elevated in people with Pagets disease. PMID: 21626309; PMCID: PMC3127018. Spongy bone can be converted to compact bone by the action of osteoblasts, bone cells that secrete the material that creates the compact bone matrix. Recent origin of low trabecular bone density in modern humans. C) The sternum (breastbone) is a good source of blood-forming tissue. Dimitrios Mytilinaios MD, PhD Figure9. a. Osteons are composed of concentric lamellae. bone and cut it in half and see what it looks like on the inside. The spaces of the trabeculated network provide balance to the dense and heavy compact bone by making bones lighter so that muscles can move them more easily. Anatomy chapter 6 Flashcards | Chegg.com signals with each other. Spongy bone tissue fills part or all of the interior of many bones. A) Serves as model for bone formation B) Provides passageway for blood vessels vessels, lymph vessels and nerves as well. (C) embryos and newborn children Figure2. compact bone different from spongy bone, is that The periosteum contains blood vessels, nerves, and lymphatic vessels that nourish compact bone. These are the attachment points for tendons and ligaments. The collagen fibers of adjacent lamallae run at perpendicular angles to each other, allowing osteons to resist twisting forces in multiple directions (see figure 6.34a). The modern human skeleton is unique in that it has a low trabecular density compared to its size. b. We now know this is incorrect, but the names have remained. Osteoblasts make the matrix of bone which calcifies hardens. So let's talk more about Grounded on academic literature and research, validated by experts, and trusted by more than 2 million users. Both compact and spongy bone tissues have the same types of cells, but they differ in how the cells are arranged. Located in the spaces, between the trabeculae of some spongy bones is red bone marrow. Which of the following is NOT true about spongy bone? Pagets Disease. (a) chondroblasts stop dividing mitotically Like osteoblasts, osteocytes lack mitotic activity. 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. The nerves sense pain, and it appears the nerves also play roles in regulating blood supplies and in bone growth, hence their concentrations in metabolically active sites of the bone. Bone Tissue and the Skeletal System, Chapter 12. It is found in the long bones and it is surrounded by compact bone. If the outer layer of a cranial bone fractures, the brain is still protected by the intact inner layer. The diaphysis is the hollow, tubular shaft that runs between the proximal and distal ends of the bone. While some people with Pagets disease have no symptoms, others experience pain, bone fractures, and bone deformities (Figure 6.3.9). concentric layers of bone, or sheets really, that (a) epiphyseal plates (b) primary { "14.1:_Case_Study:_Your_Support_System" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.
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