URINARY SYSTEM AND MALE FEMALE REPRODUCTIVE SYSTEMS
URINARY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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remove water and additional solutes.
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help regulate aldosterone secretion.
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increase the rate of active transport of Na+ in the distal tubules and collecting ducts.
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dilute the filtrate by removing solutes.
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Detailed explanation-1: -A: The ascending limb of the loop of Henle functions to dilute the filtrate by removing solutes. The thin segment of the ascending limb is not permeable to water, but it is permeable to solutes. B: The cuboidal cells of the distal tubule and collecting duct function to remove water and additional solutes.
Detailed explanation-2: -The ascending limb drains urine into the distal convoluted tubule.
Detailed explanation-3: -The ascending limb of Henle’s loop is impermeable to water but permeable to electrolytes. As a result, the filtrate gets diluted as it moves up the ascending limb of Henle’s loop.
Detailed explanation-4: -The loop of Henle is supplied by two vasa recta which are straight vessels closely accompanying the tubule’s hairpin-shaped course. These carry blood in opposite directions, just like the passage of tubular fluid – the countercurrent mechanism. Thus they absorb water on the one hand and solute on the other.