Chapter 47.3, Problem 2R

Summary Introduction

To review:

The changes in the bone cells’ activities that explain the loss of mass of bones, in astronauts spending long durations in international space station.

Introduction:

The formation of bone involves the combined activities of the osteoclasts (bone-destroying cells) and the osteoblast (bone forming cells). The calcium released by the activity of osteoclasts gets deposited by the osteoblast cells.