What type of tissues makes up the walls of the heart?

Question

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1)What type of tissue makes up the walls of the heart?

2) To which parts of the body do the right and left sides of the heart pump blood?

3) Through which blood vessels does oxygen-rich blood return from the lungs to the heart?

4) Why is the wall of the left ventricle is thicker than that of the right ventricle?

5) Describe the path that oxygen-poor blood takes into and out of the heart.

6) Name the four valves in the heart. What is the purpose of these valves?

7)What structure seperates the right side of the heart from the left side of the heart? Why is this structure important?

Answer 1

1. myocardium
2. right --> lungs, left---> all of body (via aorta)
3. pulmonary vein
4. pumps against higher pressure
5. inferior vena cava and superior vena cava --> right atrium
--> right ventricle --> pulmonary artery --> lungs --> pulmonary
vein --> left atrium --> left ventricle --> aorta
6. tricuspid, pulmonic, mitral, aortic. they prevent back flow of blood in the wrong direction.
7. interventricular septum. prevents mixture of oxygenated and deoxygenated blood? but that seems kind of obvious...