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Based on their function, where would you expect to find microvilli to be in the body?

A.

Fallopian tubes

B.

Digestive tract

C.

Urinary tract

D.

Respiratory tract

Answer and Explanation

The Correct Answer is B

A. Fallopian tubes: The Fallopian tubes have cilia, not microvilli. Cilia help move the egg toward the uterus.

B. Digestive tract: Microvilli are found on the epithelial cells of the small intestine. They increase the surface area for maximum nutrient absorption.

C. Urinary tract: While some absorptive and secretory functions occur in the nephron, microvilli are not prominent structures throughout the urinary tract.

D. Respiratory tract: The respiratory tract is lined with ciliated epithelium, which helps move mucus, not with microvilli for absorption.


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Related Questions

Correct Answer is C

Explanation

A. Mouth, pharynx, large intestine, small intestine: The small intestine comes before the large intestine in the digestive tract.

B. Mouth, esophagus, stomach, pharynx, small intestine: The pharynx comes before the esophagus, not after.

C. Mouth, pharynx, esophagus, stomach, small intestine: This is the correct order of food movement through the upper GI tract.

D. Mouth, pharynx, stomach, esophagus, anus: The esophagus precedes the stomach, and the anus is the final structure after the large intestine.

Correct Answer is A

Explanation

A. An increase in GFR increases urine formation: A higher GFR means more plasma is filtered, leading to more urine production.

B. It is not an indication of kidney function: GFR is a primary indicator of kidney function.

C. A decrease in GFR causes polyuria: A low GFR usually leads to oliguria (low urine output), not polyuria.

D. It is unaffected by blood pressure: GFR is directly influenced by blood pressure; low pressure decreases filtration.

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