A patient with CAD is asking the nurse about the mechanisms of the heart.
It would be appropriate for the nurse to respond that when the left ventricle contracts, it pushes blood through the semilunar valve to the:

Pulmonary vein.

Pulmonary artery.

Aorta.

Inferior vena cava.

Answer and Explanation

The Correct Answer is C

Choice A rationale:

This statement is incorrect because the pulmonary vein carries oxygenated blood from the lungs to the left atrium, not from the left ventricle.

Choice B rationale:

This statement is incorrect because the pulmonary artery carries deoxygenated blood from the right ventricle to the lungs, not from the left ventricle.

Choice C rationale:

This statement is correct. When the left ventricle contracts, it pushes blood through the aortic semilunar valve into the aorta, the largest artery in the body.

Choice D rationale:

This statement is incorrect because the inferior vena cava carries deoxygenated blood from the lower half of the body to the right atrium, not from the left ventricle.

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Correct Answer is B

Explanation

Choice A rationale:

Applying a warm pack can increase swelling and pain, so it is not recommended.

Choice B rationale:

Removing the stinger by scraping it off with a knife blade can help to reduce the amount of venom that is released into the body.

Choice C rationale:

Applying a tourniquet can restrict blood flow and cause more harm than good.

Choice D rationale:

Sucking the wound can introduce bacteria and cause infection, so it is not recommended.

A. Veins carry oxygenated blood away from the heart, while arteries carry deoxygenated blood toward the heart. B. Veins carry deoxygenated blood away from the heart, while arteries carry oxygenated blood toward the heart. C. Veins carry deoxygenated blood toward the heart, while arteries carry oxygenated blood away from the heart. D. Veins carry oxygenated blood toward the heart, while arteries carry deoxygenated blood away from the heart.

Correct Answer is C

Explanation

Choice A rationale:

This statement is incorrect. Veins do not carry oxygenated blood away from the heart, and arteries do not carry deoxygenated blood toward the heart.

Choice B rationale:

This statement is incorrect. While it is true that veins carry deoxygenated blood, they carry it toward the heart, not away from it. Similarly, arteries carry oxygenated blood, but they carry it away from the heart, not toward it.

Choice C rationale:

This statement is correct. In the circulatory system, veins carry deoxygenated blood toward the heart, while arteries carry oxygenated blood away from the heart.

Choice D rationale:

This statement is incorrect. Veins do not carry oxygenated blood toward the heart, and arteries do not carry deoxygenated blood away from the heart.

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A patient with CAD is asking the nurse about the mechanisms of the heart.It would be appropriate for the nurse to respond that when the left ventricle contracts, it pushes blood through the semilunar valve to the:

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A patient with CAD is asking the nurse about the mechanisms of the heart.
It would be appropriate for the nurse to respond that when the left ventricle contracts, it pushes blood through the semilunar valve to the: