Which sequence best describes the direction of blood flow through the heart and lungs?
Vena cava → Right atrium → Right ventricle → Lungs → Pulmonary artery → Left atrium → Left ventricle.
Right atrium → Right ventricle → Pulmonary vein → Lungs → Pulmonary artery → Left atrium → Left ventricle.
Right atrium → Right ventricle → Pulmonary artery → Lungs → Pulmonary vein → Left atrium → Left ventricle.
Right atrium → Right ventricle → Lungs → Pulmonary vein → Pulmonary artery → Left atrium → Left ventricle → Vena cava.
The Correct Answer is C
Choice A rationale
This sequence is incorrect because it suggests that blood goes from the lungs to the pulmonary artery, which is not accurate. The pulmonary artery carries deoxygenated blood from the heart to the lungs.
Choice B rationale
This sequence is incorrect because it suggests that blood goes from the pulmonary vein to the lungs, which is not accurate. The pulmonary vein carries oxygenated blood from the lungs to the heart.
Choice C rationale
This sequence correctly describes the direction of blood flow through the heart and lungs. Deoxygenated blood enters the right atrium, goes to the right ventricle, then is sent to the lungs via the pulmonary artery. After picking up oxygen in the lungs, the blood returns to the heart via the pulmonary vein, entering the left atrium, then the left ventricle, from where it is pumped out to the rest of the body.
Choice D rationale
This sequence is incorrect because it suggests that blood goes from the pulmonary vein to the pulmonary artery, which is not accurate. The pulmonary vein carries oxygenated blood from the lungs to the heart, and the pulmonary artery carries deoxygenated blood from the heart to the lungs.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
Keeping hands warm and wearing gloves when handling cold objects is one of the most effective ways to manage Raynaud’s disease. Cold temperatures can trigger Raynaud’s attacks, which can cause the fingers to turn white, then blue, and feel cold and numb.
Choice B rationale
While avoiding standing for prolonged periods can be beneficial for certain conditions, it is not specifically related to managing Raynaud’s disease.
Choice C rationale
Regular exercise can help improve circulation, which can be beneficial for people with Raynaud’s disease. However, it’s not as crucial as keeping the hands warm.
Choice D rationale
Regularly returning to the clinic for blood pressure checks is not specifically related to managing Raynaud’s disease. While it’s important for individuals with certain conditions, such as hypertension, to regularly monitor their blood pressure, it’s not a key aspect of managing Raynaud’s disease.
Correct Answer is A
Explanation
Choice A rationale
Left heart failure is a common cause of right heart failure. When the left side of the heart is unable to pump blood efficiently, it can cause increased pressure in the lungs, which can then lead to right heart failure.
Choice B rationale
Pericarditis, an inflammation of the sac-like covering around the heart, is not typically a direct cause of right heart failure.
Choice C rationale
While hypertension, or high blood pressure, can contribute to heart failure, it typically affects the left side of the heart more than the right.
Choice D rationale
Acute pneumonia, an infection that inflames the air sacs in one or both lungs, is not typically a direct cause of right heart failure.
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