1.

Describe the function of the heart.

Answer»

The heart is an organ that pumps blood throughout the body. It comprises four chambers:

  • Atria (upper chambers)
  • Ventricles (lower chambers)

The wall of the heart is made up of three layers:

  • Epicardium- This is a protective layer made of connective tissues.
  • Myocardium- This layer forms the heart muscles.
  • Endocardium- This is the innermost layer and protects the valves and the heart.


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