Which of the following is a direct result of antidiuretic hormone?
Increased urine acidity
Increased urine volume
Increased urine salinity
Decreased urine volume
The Correct Answer is D
A. Increased urine acidity: Antidiuretic hormone (ADH) primarily affects water reabsorption in the kidneys, not urine acidity. It does not have a direct effect on the acidity of the urine.
B. Increased urine volume: ADH works to conserve water by increasing water reabsorption in the kidneys, which decreases urine volume.
C. Increased urine salinity: While ADH does increase water reabsorption, which could concentrate the urine, its direct action is on water retention, not specifically on increasing urine salinity.
D. Decreased urine volume: ADH promotes water reabsorption in the kidneys, leading to decreased urine output. This is the direct and correct result of ADH action.
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Correct Answer is B
Explanation
A. 20,000 to 30,000: This number is too high for the typical number of sperm that reach the vicinity of the egg.
B. 20 to 200: This number is within the range of the actual number of sperm that typically reach the vicinity of the egg.
C. Half: This is an exaggerated number, as far fewer than half of the ejaculated sperm reach the vicinity of the egg.
D. 2000 to 3000: This number is too high for the typical number of sperm that reach the vicinity of the egg.
Correct Answer is D
Explanation
A. Minerals are absorbed directly into the bloodstream, not through lacteals.
B. Glucose is absorbed directly into the bloodstream through capillaries, not through lacteals.
C. Amino acids are absorbed into the bloodstream through capillaries, not through lacteals.
D. Triglycerides are absorbed by the lacteals in the small intestine. Lacteals are lymphatic vessels that transport absorbed lipids (including triglycerides) from the digestive tract.