Aldosterone:
Causes Na⁺ excretion
Depletes blood volume
Causes K⁺ reabsorption
Causes Na⁺ and water reabsorption
The Correct Answer is D
A. Causes Na⁺ excretion: Aldosterone promotes sodium reabsorption, not excretion, to increase blood volume and pressure.
B. Depletes blood volume: Aldosterone increases blood volume by retaining sodium and water.
C. Causes K⁺ reabsorption: Aldosterone promotes potassium excretion, not reabsorption.
D. Causes Na⁺ and water reabsorption: Aldosterone acts on the renal tubules to reabsorb sodium, which draws water back into circulation, increasing blood volume.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. The stomach wall is thrown into folds called villi and microvilli: Villi and microvilli are found in the small intestine, not the stomach. The stomach has rugae.
B. The esophagus connects the pharynx with the trachea: The esophagus connects the pharynx to the stomach; the trachea connects to the lungs.
C. The pyloric sphincter and ileocecal valve are located at the entrance and exit of the small intestine: The pyloric sphincter regulates entry from the stomach to duodenum, and the ileocecal valve controls flow from the ileum to cecum.
D. The cecum and colon are parts of the small intestine: They are parts of the large intestine, not the small intestine.
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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