Based on their function, where would you expect to find microvilli to be in the body?
Fallopian tubes
Digestive tract
Urinary tract
Respiratory tract
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
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.
Correct Answer is D
Explanation
A. Causes a deficiency of intrinsic factor and pernicious anemia: Intrinsic factor is produced in the stomach, not the liver. Its deficiency leads to pernicious anemia.
B. Causes lactose intolerance: Lactose intolerance is due to lactase deficiency in the small intestine.
C. Causes gastric reflux: Gastroesophageal reflux is typically due to lower esophageal sphincter dysfunction.
D. Causes blood drug levels to reach toxic levels: The liver metabolizes drugs. Impaired hepatic function reduces drug clearance, leading to accumulation and potential toxicity.
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