All of the following are true regarding the bones of an average, healthy 30-year-old adult except
A) most if not all of their epiphysial plates have closed.
B) their osteoblasts are equally as active as their osteoblasts.
C) their bones contain many bony prominences and markings.
D) they are resorbing bone faster than they are laying down new bone.

Question

Quizplus · Accepted Answer

In an average, healthy 30-year-old adult, bone resorption and deposition are usually balanced, and they are not resorbing bone faster than they are laying down new bone. Option A is true because epiphysial plates usually close by the age of 25. Option B is false because osteoclasts are responsible for bone resorption, not osteoblasts, which are responsible for bone deposition. Option C is true because bones have many bony prominences and markings that serve as attachment sites for muscles, ligaments, and tendons.

All of the Following Are True Regarding the Bones of an Average