Homework Answers
Answer
1) Pectinate muscles are located as ridges in the walls of atria.
2) The superior vena cava (SVC) and inferior vena cava (IVC) empty into right atrium.
- These two vena cava brings back deoxygenated blood from the body tissues to the heart.
3) The function of any heart valve is to prevent back flow of the blood.
- There are four valves in the heart.
- Two atrioventricular valaves and two semilunar valves.
4) The valves held by chordae tendinae and papillary muscle are bicuspid valve and tricuspid valve.
- These are atrioventricular valves that prevent backflow of blood ventricles to atria.
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