Long Bone Structure. Basic parts of the long bone: 1. Shaft is known as the ________________. Consists of a thick ____________of compact bone surrounding a ________________________________ (yellow bone marrow/ fat in adults) 2. Expanded ends are ______________
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Basic parts of the long bone:
1. Shaft is known as the ________________.
2. Expanded ends are ______________
1. Thin plates of ________________- covered compact bone on the outside and ________________________________ spongy bone within.
2. Have no ________________or ________________… why?
3. Contain bone ________________ between their trabeculae, but no ________________cavity.
4. In flat bones, the _____________ spongy bone layer is known as the ________________, and the whole arrangement resembles a stiffened sandwich.
Notice the red marrow and the compact bone
1. In a child, the _______________ cavity of nearly every bone is filled with ____ bone marrow.
2. In young to middle-aged adults, the shafts of the long bones are filled with __________________________________________________________.
3. In adults, ______ marrow is limited to the _______skeleton, pectoral girdle, pelvic girdle, and proximal heads of the humerus and the femur.
At puberty, growth in bone length is increased dramatically by the combined activities of growth hormone, thyroid hormone, and the sex hormones.
Fractures are often classified according to the ________________of the bone ends after the break:
1. ______(_____________) bone ends penetrate the ______.
2. ________(___________) bone ends don’t penetrate the _____.
3. ______________bone fragments into __ or more pieces. Common in the ________________ (________________ bones).
5. _________ ragged break caused by excessive _____________forces. ________________________________.
6. ________________________________ one bone fragment is driven into the ________________space or ________________ bone of another.
What about the above x-ray is indicative of rickets?