Question

question 29

a fracture in the shaft of a bone would be a break in the ______.

a diaphysis

b epiphysis

c articular cartilage

d metaphysis

Explanation:

Identify the anatomical region of a long bone shaft

Using the Skeletal Terminology and Skeletal System Functions knowledge points, we analyze the structural regions of a long bone to identify which term corresponds to the "shaft."

• Diaphysis: This is the elongated, tubular shaft of a long bone, running between the proximal and distal ends.
• Epiphysis: This refers to the rounded ends of a long bone, which articulate with other bones.
• Articular cartilage: This is the thin layer of hyaline cartilage covering the epiphysis at joint surfaces.
• Metaphysis: This is the narrow portion of a long bone between the epiphysis and the diaphysis, containing the epiphyseal plate during growth.

Therefore, a fracture in the shaft of a bone is a break in the diaphysis.

Answer:

• (A) diaphysis (Correct answer)
• (B) epiphysis
• (C) articular cartilage
• (D) metaphysis