Which nephron structure senses sodium chloride concentration in tubular fluid and helps regulate renin release?
Correct answer: A. The macula densa
- A. The macula densa
- B. The renal papilla
- C. The podocyte layer
- D. The urinary sphincter
Explanation
The macula densa is part of the juxtaglomerular apparatus and monitors sodium chloride delivery in the distal tubule. The other structures do not regulate renin release in response to tubular sodium chloride.
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About Urinary System
The urinary system includes the kidneys, ureters, urinary bladder and urethra, with emphasis on nephron structure and urine formation. It explains glomerular filtration, tubular reabsorption, tubular secretion, water and electrolyte regulation, acid base balance, and the roles of ADH and aldosterone in maintaining homeostasis.
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