Question

which of these covers the epiphyses of long bones?

multiple choice

medullary cavity

diaphysis

endosteum

articular cartilage

periosteum

Explanation:

Identify the target anatomical structure

Using the Long Bone Anatomy and Epiphysis knowledge points

• The question asks what covers the epiphyses (the expanded ends) of long bones.
• The epiphyses are the proximal and distal ends of a long bone that articulate with other bones to form joints.

Evaluate the anatomical options

• medullary cavity: The hollow chamber within the diaphysis containing yellow marrow.
• diaphysis: The shaft or central main portion of a long bone.
• endosteum: The thin vascular membrane lining the inner medullary cavity.
• articular cartilage: A thin layer of hyaline cartilage covering the epiphysis where the bone forms a joint.
• periosteum: A dense fibrous membrane covering the outer surface of the diaphysis, but it does not cover the articular surfaces of the epiphyses.

Select the correct covering

• The outer surface of the epiphysis at a joint is covered by hyaline cartilage, specifically called articular cartilage, to reduce friction and absorb shock.

Answer:

• medullary cavity
• diaphysis
• endosteum
• articular cartilage (Correct answer)
• periosteum