Question

17 articular cartilage of a long bone is found
a on the outer surface of the epiphyses
b on the outer surface of the diaphysis
c in the spaces of the sponge bone
d inside the medullary cavity

Explanation:

• Articular cartilage is a type of hyaline cartilage.
• Long bones have two ends called epiphyses.
• Articular cartilage covers the outer surface of the epiphyses to provide a smooth surface for joint movement.
• The diaphysis is the shaft of the long bone and is covered by periosteum (not articular cartilage).
• Sponge bone (cancellous bone) spaces contain red bone marrow.
• The medullary cavity contains yellow bone marrow (in adults) or red bone marrow (in children).

Answer:

A. On the outer surface of the epiphyses