Which statement about the long bones in a human skeleton is true?
A) Ossification starts at the ends of developing long bones and continues until it reaches the center of the bones.
B) Elongation occurs at the articular surfaces.
C) Secondary sites of ossification occur in the center of developing long bones.
D) They are first laid down as cartilage.
E) They form on a scaffold of connective tissue membrane.

Question

Quizplus · Accepted Answer

Long bones in a human skeleton are initially laid down as cartilage. The cartilage then undergoes a process of ossification starting from the center of the bone and moving towards the ends.

Note: Option A is partially correct but not the most accurate as ossification starts from the center and moves towards the end. Option B is incorrect as elongation occurs at the epiphyseal plates and not at the articular surfaces. Option C is also partially correct as secondary sites of ossification do occur in the center of developing long bones, but this is not the initial site of ossification. Option E is incorrect as long bones form on a scaffold of hyaline cartilage, not connective tissue membrane.

Which Statement About the Long Bones in a Human Skeleton