Mitral valve prevents the flow of blood from:
Correct answer: D. Left ventricle to left atrium
- A. Right atrium to right ventricles
- B. eft atrium to left ventricles
- C. Right atrium to left atrium
- D. Left ventricle to left atrium
Explanation
The mitral valve does not prevent the flow of blood from the left ventricle to the left atrium. The mitral valve prevents the backflow of blood from the left ventricle to the left atrium. When the left ventricle contracts, the mitral valve closes to prevent blood from flowing back into the left atrium. This ensures that all of the blood pumped by the left ventricle is sent out to the body through the aorta. The mitral valve is located between the left atrium and the left ventricle. It has two leaflets that open and close to allow blood to flow in only one direction. When the left atrium contracts, the mitral valve opens to allow blood to flow from the left atrium to the left ventricle. When the left ventricle contracts, the mitral valve closes to prevent blood from flowing back into the left atrium.
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The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
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