Musculoskeletal System PDF
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Uploaded by LuckyAgate2972
Faculty of Applied Health Science Technology
Dr. Shaimaa Mostafa Kashef
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Summary
This document provides information on the musculoskeletal system, focusing on the different types of bones and their structures, such as compact bone, spongy bone, and osteons. It also includes diagrams illustrating the structural components of bones. The document is well-structured and easy to understand with clear explanations of complex biological concepts and may be used by students of human anatomy and physiology.
Full Transcript
Musculoskeletal System Dr. Shaimaa Mostafa Kashef Lecturer of Histology &Cell Biology II Sites: 1)Long bone as femur and tibia. 2)Short bone as bones of phalanges. 3)Flat bone as bones of skull and sternum. Histologically bone is classified into: 1.Primary (immature or w...
Musculoskeletal System Dr. Shaimaa Mostafa Kashef Lecturer of Histology &Cell Biology II Sites: 1)Long bone as femur and tibia. 2)Short bone as bones of phalanges. 3)Flat bone as bones of skull and sternum. Histologically bone is classified into: 1.Primary (immature or woven) bone. 2.Secondary (mature or lamellar) bone. Decalcified Compact Bone 1- It is formed of thin layers of bone lamellae that are organized in the form of: (a) The Haversian system. (b) Outer circumferential lamellae. (c) Inner circumferential lamellae. (d) Interstitial lamellae. 2- Haversian system is present. 3- No bone marrow cavities between the trabeculae of the bone. Perforating fibers of Sharpey are collagenous bundles that extend from periosteum to the outer circumferential lamellae and interstitial lamellae and fix the periosteum to the underlying bone. Spongy Bone Spongy Bone 1- Covered by a layer of compact bone. 2- Bone trabeculae are formed of irregular bone lamellae. 3- There is no Haversian system. 4- Multiple bone marrow cavities present between the bone trabeculae. 1: Bone lamellae 2: Osteocytes 1-Osteon &Haversian system. 2-Difference between compact and spongy bony https://www.youtube.co m/watch?v=-yvUzHvW-1Y https://slideplayer.com/sl ide/9406121/#google_vig nette https://www.youtube.co m/watch?v=CJzmJKzxk34 2- Which one of the following statements is true regarding Volkmann’s canals? A- Contains no blood vessels. B- At the center of the osteon. C- Communicate with Haversian canals. D- Are arranged parallel to the bone surface. Answer: C MCQ Q2. Which one of the following is a character of Haversian canals? A- Contain connective tissue, blood vessels and nerves B- Contain type II collagen fibers. C- Lined with osteoclast. D- Lined with osteocytes Answer: A MCQ Q2. Which one of the following is a character of Haversian canals? A- Contain connective tissue, blood vessels and nerves B- Contain type II collagen fibers. C- Lined with osteoclast. D- Lined with osteocytes Answer: A Name this type of bone:
