The target organ for vasopressin is:
Correct answer: D. Kidneys
- A. Heart
- B. Liver
- C. Stomach
- D. Kidneys
Explanation
Vasopressin, also known as antidiuretic hormone (ADH), plays a crucial role in maintaining the body's water balance. It acts primarily on the kidneys, increasing the permeability of the kidney tubules to water, thereby promoting water reabsorption and reducing urine output. This helps to concentrate the urine and conserve water in the body. The other options are not directly influenced by vasopressin: the heart is involved in circulation, the liver in metabolism, and the stomach in digestion.
This question appeared on the ETEA MDCAT 2012 paper, which you can sit online with every answer explained.
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About Kidney and Urinary System
The kidney and urinary system remove nitrogenous wastes, regulate water and ion balance, and help maintain blood pH through filtration, selective reabsorption and secretion. Questions cover nephron structure, ultrafiltration, the loop of Henle, collecting ducts, urine formation and the roles of ADH and aldosterone, while distinguishing excretion from egestion.
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