Define appositional growth. A)Appositional growth is a decrease in bone diameter due to the addition of bone matrix at the endosteum of the medullary cavity. B)Appositional growth is a decrease in bone diameter due to the pulling of the epiphyses by muscles during physical activity. C)Appositional growth is an increase in bone diameter due to the pulling of the epiphyses by muscles during physical activity. D)Appositional growth is a decrease in bone diameter due to the addition of bone matrix at the bone's outer surface. E)Appositional growth is an increase in bone diameter due to the addition of bone matrix at the bone's outer surface.

Question

Quizplus · Accepted Answer

Appositional growth is the process by which bones increase in diameter, and this occurs due to the addition of bone matrix at the bone's outer surface, also known as the periosteum. This growth is dependent on the activity of bone-forming cells (osteoblasts) found in the periosteum layer. Therefore, option E "an increase in bone diameter due to the addition of bone matrix at the bone's outer surface" is the correct answer. Options A, B, C, and D are incorrect because they describe a decrease in bone diameter and incorrect processes involved in bone growth.

Define Appositional Growth