If someone runs a marathon through a desert while eating pretzels and not drinking water, their plasma osmolarity
A) rises and becomes hypertonic to the interstitial and intracellular fluid compartments.
B) rises and becomes hypotonic to the interstitial and intracellular fluid compartments.
C) decreases and becomes hypertonic to the interstitial and intracellular fluid compartments.
D) decreases and becomes hypotonic to the interstitial and intracellular fluid compartments.

Question

Quizplus · Accepted Answer

Running a marathon in a desert without drinking water leads to dehydration, increasing plasma osmolarity. Eating pretzels, which are salty, further increases plasma osmolarity, making it hypertonic compared to interstitial and intracellular fluids.

If Someone Runs a Marathon Through a Desert While Eating