Questions: Question 40 2 pts Which of the following is not composed of cuboidal epithelium? The thick segment of the nephron loop (loop of Henle) The thin segment of the nephron loop (loop of Henle) The collecting duct The proximal convoluted tubule The distal convoluted tubule Question 41 Loop diuretics reduce body water content by acting on the . feedback loop between the kidney and posterior pituitary gland thirst mechanism and water intake countercurrent exchanger system

Question 40 2 pts

Which of the following is not composed of cuboidal epithelium? The thick segment of the nephron loop (loop of Henle) The thin segment of the nephron loop (loop of Henle) The collecting duct The proximal convoluted tubule The distal convoluted tubule

Question 41

Loop diuretics reduce body water content by acting on the . feedback loop between the kidney and posterior pituitary gland thirst mechanism and water intake countercurrent exchanger system

Transcript text: Question 40 2 pts Which of the following is not composed of cuboidal epithelium? The thick segment of the nephron loop (loop of Henle) The thin segment of the nephron loop (loop of Henle) The collecting duct The proximal convoluted tubule The distal convoluted tubule Question 41 Loop diuretics reduce body water content by acting on the $\qquad$ . feedback loop between the kidney and posterior pituitary gland thirst mechanism and water intake countercurrent exchanger system

Solution

The answer to the first question (Question 40) is: The thin segment of the nephron loop (loop of Henle).

Explanation for each option:

The thick segment of the nephron loop (loop of Henle): This segment is composed of cuboidal epithelium.
The thin segment of the nephron loop (loop of Henle): This segment is composed of simple squamous epithelium, not cuboidal epithelium.
The collecting duct: This structure is composed of cuboidal epithelium.
The proximal convoluted tubule: This segment is composed of cuboidal epithelium with microvilli.
The distal convoluted tubule: This segment is also composed of cuboidal epithelium.

Summary: The thin segment of the nephron loop (loop of Henle) is not composed of cuboidal epithelium; it is composed of simple squamous epithelium.

For the second question (Question 41), the answer is: countercurrent exchanger system.

Explanation:

Feedback loop between the kidney and posterior pituitary gland: This involves the regulation of antidiuretic hormone (ADH) but is not the primary action site of loop diuretics.
Thirst mechanism and water intake: This is related to the regulation of water intake but not directly affected by loop diuretics.
Countercurrent exchanger system: Loop diuretics act on the thick ascending limb of the loop of Henle, which is part of the countercurrent multiplier system, reducing the reabsorption of sodium and chloride, leading to increased urine output and reduced body water content.

Summary: Loop diuretics reduce body water content by acting on the countercurrent exchanger system.

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