Question

It has two layers, an outer layer made of strong connective tissue (fibrous pericardium), and an inner layer made of serous membrane (serous pericardium).

Answer 1

Explain how this extra bone can disappear over time. This extra band of bone probably disappears over time due to the action of osteoclasts. Osteoclasts are responsible for breaking down bone and releasing the components of the bone (calcium and phosphorus) into the bloodstream.

Step-by-step explanation: