As described earlier, canaliculi connect with the canaliculi of other lacunae and eventually with the central canal. Gravity. A long bone is one that is cylindrical in shape, being longer than it is wide.Keep in mind, however, that the term describes the shape of a bone, not its size. It can be found under the periosteum and in the diaphyses of long bones, where it provides support and protection. Without prior written permission from author, commercial use of any content is illegal.Yes, you need to login with your account before uploading presentation. Mature Bone/lamellar bone  composed of cylindrical units called osteons or Haversian systems  osteons consist of concentric lamellae of bone matrix surrounding a central canal, the osteonal (Haversian) canal, which contains the vascular and nerve supply of the osteon. Compact bone is dense so that it can withstand compressive forces, while spongy (cancellous) bone has open spaces and supports shifts in weight distribution.Compact bone is the denser, stronger of the two types of bone tissue (Figure 6.10). Although bone cells compose a small amount of the bone volume, they are crucial to the function of bones. Bone is a composite of mainly collagen and minerals (hydroxyapatite, or calcium) Collagen has a low E, high tensile strength, low compressive strength Hydroxyapatite is stiff, brittle, high compressive strength Anisotropic material that can resist different types of forces Strongest in compression, weakest in … Adult long bone. You can favorite the presentations, download presentations, and even embed them in your blog.Yes, it’s absolutely safe sign-in. A Clinical Look at Bone Composition and Structure. Your username will be displayed on your uploaded presentation. This section will examine the gross anatomy of bone first and then move on to its histology.The osteocytes are located inside spaces called lacunae (singular = lacuna), found at the borders of adjacent lamellae. Long bones are found in the arms (humerus, ulna, radius) and legs (femur, tibia, fibula), as well as in the fingers (metacarpals, phalanges) and … SlidesFinder is a great resource that gives you access to numerous presentations on varied subjects. • Bone is the dynamic tissue so its composition varies according to the regulating factors.• 99% of body calcium, 80% of phosphorus and 65% of sodium and magnesium is reserved in the bone• Calcium is needed for many physiological function so it is tightly regulated at normal level (9-11mg/dl)25/27/2012 1212413114 42 43. Raeghan_Rudkin. The great strength of bone exists principally along its long axis and is roughly parallel both to the collagen fibre axis and to the long axis of the mineral crystals.Our editors will review what you’ve submitted and determine whether to revise the article.

Mechanically, articular cartilage behaves as a linear viscoelastic solid. Bones are hard structures because of the calcium that builds up in the matrix, but they retain a slight amount of elasticity due to the fibers. Created by. Bone is hard and many of its functions depend on that characteristic hardness. Flashcards.

Your registered email id is needed for sending your stats of uploaded presentation.SlidesFinder is a very popular and powerful online presentation sharing website that allows you to upload your PowerPoint presentations online for free. Bone - Bone - Chemical composition and physical properties: Depending upon species, age, and type of bone, bone cells represent up to 15 percent of the volume of bone; in mature bone in most higher animals, they usually represent only up to 5 percent. Re-productivity of content are not allowed. However, whereas HA as has a Ca:P ratio of 5:3 (1.67), bone mineral itself has Ca:P ratios ranging from 1.37 - 1.87. Sagittal section through long bone showing the internal structure of the bone. • Bones are living tissues, so they contain metabolically active cells. To resist these stresses, the material should be as far from the neutral axis as possible. We don’t have access to users’ Facebook password. OSTEOPOROSIS Prepared By Dr. MOHSEN A. GHAFFAR Consultant Orthopaedic Surgery Al Jedaani Group Of Hospitals Bone Composition Inorganic Matter : Mineral forms ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 3f4777-Y2FhZ

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