The process by which some poisonous substances are secreted from peritubular capillaries into nephric filtrate is termed as:
Correct answer: B. Tubular secretion
- A. Tubular reabsorption
- B. Tubular secretion
- C. Counter-current exchange
- D. None of these
Explanation
Tubular secretion is the opposite process of reabsorption, where substances are actively transported from the blood into the renal tubules to be excreted in the urine. This process helps in eliminating waste products, regulating pH, and controlling the concentration of certain ions in the body. Many drugs, toxins, and metabolic waste products are secreted into the nephric filtrate via this mechanism.
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About Homeostasis
Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
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