Caib 4 Exam Questions With Correct Answers

After completing a marathon on a particularly warm day, Dave consumes four liters of water. Soon after, he begins to feel nauseous and starts vomiting. What is likely happening to Dave? A) hyponatremia; very low extracellular sodium ion concentration B) dehydration C) hypoproteinemia; unusually low levels of plasma proteins D) obligatory water loss {Ans: A)}Of the following urinary system organs, the homeostatic functions are performed by the ________. A) urinary bladder B) kidneys C) urethra D) ureters {Ans: B)}What do you call the outermost portion of the kidney? A) pelvis B) cones C) medulla D) cortex {Ans: D)}Many nephrons empty into a ________. A) columnar duct B) collecting duct C) microcalyx D) renal tubule {Ans: B)}Nancy is experiencing an acute panic attack. While hyperventilating, she remembers to open a paper bag and breathe into it. What is Nancy trying to prevent? A) respiratory acidosis B) metabolic alkalosis C) metabolic acidosis D) respiratory alkalosis {Ans: D)}Which of the following does not describe the juxtaglomerular complex? a. Its macula densa cells produce aldosterone. b. It regulates the rate of filtrate formation. c. It helps control systemic blood pressure. d. Its granular cells produce renin. {Ans: a.}