Saturday, April 26, 2008

The epicardium

What is the epicardium?
The epicardium is the outer layer of the wall of the heart. It is composed of connective tissue covered by epithelium. The epicardium is also known as the visceral pericardium.
Function:

Provides an outer protective layer for the heart.
What is the myocardium?
Myocardium is the muscular middle layer of the wall of the heart. It is composed of spontaneously contracting cardiac muscle fibers which allow the heart to contract.
Function:

Stimulates heart contractions to pump blood from the ventricles and relaxes the heart to allow the artria to receive blood.

No comments: