Oxygenated blood returns to the left atrium through which of the following?
Superior and inferior vena cava
Aorta
Pulmonary arteries
Pulmonary veins
The Correct Answer is D
A. The superior and inferior vena cava carry deoxygenated blood from the body to the right atrium, not oxygenated blood to the left atrium.
B. The aorta carries oxygenated blood away from the left ventricle to the rest of the body but does not return it to the heart.
C. The pulmonary arteries transport deoxygenated blood from the right ventricle to the lungs for oxygenation, not the other way around.
D. The pulmonary veins are responsible for transporting oxygenated blood from the lungs to the left atrium, completing the pulmonary circulation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. The production of breast milk is the function of the mammary glands, not the lacrimal gland.
B. The production of saliva is the function of the salivary glands, not the lacrimal gland.
C. The secretion of cerumen (earwax) is the function of the ceruminous glands, not the lacrimal gland.
D. The lacrimal glands are responsible for the secretion of tears, which help to lubricate and protect the surface of the eyes. This is the correct answer.
Correct Answer is C
Explanation
A. The renal afferent arteriole does not play a role in reabsorbing glucose. Glucose reabsorption occurs in the proximal convoluted tubule of the nephron, not in the afferent arteriole.
B. The afferent arteriole does not reabsorb potassium and magnesium. These electrolytes are reabsorbed in specific segments of the nephron, such as the proximal convoluted tubule and the loop of Henle.
C. The renal afferent arteriole delivers blood to the nephron, specifically to the glomerulus, where filtration of blood occurs. This is its primary function in the kidney's filtration process.
D. The afferent arteriole does not act as a holding area for filtrate. Filtrate is formed in the glomerulus, and it then moves into the Bowman's capsule and through the nephron.
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