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Anatomy of Long Bones

Terms in this set (11)

Epiphysis
the end part of a long bone, initially growing separately from the shaft.
epiphyseal line
(in adults) marks the point of union were the epiphysis meets the diaphysis.
metaphysis
the narrow portion of a long bone between the epiphysis and the diaphysis. (contains the growth plate.)
diaphysis
the shaft or central part of a long bone.
compact bone
denser material used to create much of the hard structure of the skeleton. forms the cortex, or hard outer shell of most bones in the body.
medullary cavity
the central cavity of bone shafts where red bone marrow and/or yellow bone marrow is stored.
cancellous (spongy or trabecular) bone
found at the ends of long bone. (also pelvic bones, ribs, skulls, and the vertebrae in the spinal column.)
yellow bone marrow
Produces fat, cartilage, and bone.
red bone marrow (myeloid tissue)
red blood cells, platelets, and most white cells arise here.
periosteum
a dense layer of vascular connective tissue enveloping the bones except at the surfaces of the joints.
nutrient foramen (vascular channel)
small tunnels in the cortex. contain nutrient arteries that contribute to the blood supply of the bone.
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