1. Due to the countercurrent multiplier, where is the osmolality LOWEST in the n
ID: 3524153 • Letter: 1
Question
1. Due to the countercurrent multiplier, where is the osmolality LOWEST in the nephron loop?
Select one:
a. Osmolality is the same everywhere in the loop
b. At the start of the loop
c. At the end of the loop
d. At the lowest point of the loop
2. In a healthy person, which of the following would cause a large fluctuation in glomerular filtration rate?
Select one:
a. A high-salt meal
b. A stressful trip to the dentist
c. Finding out you are being let go from your job
d. None of the above
3. Which of the following is transported only in the proximal tubule?
Select one:
a. Water
b. NaCl
c. Urea
d. Amino acids
Explanation / Answer
Answer 1) The osmolality LOWEST in the nephron loop at the end of the loop that is ascending limb of the loop due to countercurrent multiplier.
- The ascending limb op loop is not permeable to water, but highly permeable to solutes.
Hence, Option C) At th end of loop
Answer 2) A high salt meal would cause a large fluctuation in glomerular filtration rate.
- High salt intake will increase the blood pressure. The constriction of afferent arterioles cause high rise in glomerular filteration rate.
- Also, high salt intake will impair normal functioning of kidney.
Hence, Option A) A high salt meal
Answer 3) Amino acids is transported only in the proximal tubule.
- 100% of amonia is reasborbed by proximal convoluted tuble.
Hence, Option D) Amino acids
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.