Question

in the long bone, what is the order of materials of the diaphysis that you would encounter as you moved from the outside of the bone to inside the bone?
spongy bone - periosteum - compact bone.
endosteum - spongy bones - periosteum.
compact bone - periosteum - endosteum
periosteum - compact bone - yellow bone marrow

Explanation:

The diaphysis is the shaft of a long bone. The periosteum is a dense layer of vascular connective tissue enveloping the bones except at the surfaces of the joints. Compact bone is dense and hard, forming the outer layer of bones. Yellow bone marrow is found in the medullary cavity of the diaphysis. Starting from the outside, the periosteum is the first layer. Then comes the compact bone. Inside the compact bone (in the diaphysis), there is yellow bone marrow.

• The first option has the wrong order (periosteum should be first, not spongy bone which is more typical in epiphyses).
• The second option has endosteum (which lines the inner surface of bones) and spongy bone (not in diaphysis order as asked - diaphysis has compact bone mainly in its structure relevant here) and periosteum in wrong order.
• The third option has compact bone first (but periosteum should be the outermost layer).

Answer:

periosteum - compact bone - yellow bone marrow