Question

Bones grow in diameter by the combined action of which two of the three bone cell types?

Answer 1

Osteoblasts and osteoclasts are the two bone cell types that contribute to the growth in diameter of bones through appositional growth.

Step-by-step explanation:

Osteoblasts and osteoclasts are the two bone cell types that contribute to the growth in diameter of bones. Osteoblasts are responsible for the formation of new bone tissue, while osteoclasts resorb old bone, allowing for the deposition of new bone tissue. This process, known as appositional growth, increases the diameter of the diaphysis and the medullary cavity.