WHICH OF THE FOLLOWING IS CORRECT ABOUT CARTILAGE? A IS USED TO MAKE FINGERNAILS B IS FOUND IN THE PERITONEAL CAVITY C IS FOUND IN THE MEDIASTINUM D IS FOUND IN THE DORSAL BODY CAVITY E ALL OF THE ABOVE
Each bone is an organ because it contains numerous types of tissue, including vascular, nervous, connective, muscular, cartilage, and osseous.
Method of bone marrow biopsy utilizing the posterior pelvis (ossa coxae)
Bones are mineral storage deposits for calcium, phosphate, magnesium, and sodium salts. Withdrawals and deposits are constant.
<ul><li>90-95% of your calcium and phosphorous stored in bones, as well as magnesium and sodium salts </li></ul><ul><li>Minerals give bone its strength </li></ul><ul><li>Minerals are needed for blood clotting, muscle contraction, ATP synthesis, etc. </li></ul>
Yellow marrow is inactive and is found in the central shaft. Red marrow is active and is found in the spongy bone at the proximal ends of long bones of arm and thigh, etc.
Osteoclast in action breaking down bone osteocytes
Structurally unstable bones of the skull. Read about Paget disease of bone (osteitis deformans) in the clinical view in the text.
WHICH OF THE FOLLOWING IS FALSE ABOUT LONG BONES? A THEY ARE FOUND IN THE CRURAL REGION B THE DIAPHYSIS IS SURROUNDED BY THE EPIPHYSES C THEY MAY BE ELONGATED WITH AN ILLIZAROV DEVICE D THEY ARE DERIVED FROM A CARTILAGE MODEL E THEY ARE INVOLVED IN HEMOPOIESIS IN INFANTS, BUT NOT IN ADULTS
Cross-section through long bone showing medullary cavity Bone consists of organic components (cells, collagen fibers, and ground substance) and inorganic components (calcium compounds, phosphorus, sodium, magnesium, sulfate, and fluoride).
Bone can be organized as either spongy (cancellous) bone or as compact (dense) bone. Compact bone Spongy bone
The spongy bone found between the layers of compact bone in the skull is called diplo ë
If only the outer compact bone is broken, the inner layer of compact bone will still protect the brain.
Intramembranous ossification (shown in gold) leads to formation of flat bones of skull, zygomatic (cheek) bone, maxilla (upper jaw), mandible (lower jaw), collar bone (clavicle), and sesamoid bones.
Most bones develop by endochondral ossification (red areas). The gray areas show bones developing by intramembranous ossification.