Question

If bones were composted entirely of compact bone,muscles would have to contract with greater force to produce movements. Explain why

Answer 1

Answer:

Many bones consist of an outer layer of dense white tissue called compact bone. It is heavy and strong and makes bones good supports. At the ends of some bones and in the middles of others is found spongy bone. Spongy bone is much looser and lighter, but still quite strong. Many bones also contain a central space called the medullary cavity. Here is where bone marrow is found. The hollow nature of bones also lightens them significantly. Bones composed entirely of compact bone would be too heavy for our muscles to move.

Explanation: