Calcitriol effect on mineral absorption?

Prepare for the CAMLPR Chemistry Test. Enhance your understanding with interactive quizzes, flashcards, and detailed explanations. Boost your confidence and readiness for exam success!

Multiple Choice

Calcitriol effect on mineral absorption?

Calcitriol boosts the gut’s ability to absorb minerals, with calcium and phosphate being the primary targets. It does this by increasing the expression of proteins and channels that move calcium across intestinal cells (like calbindin and related calcium transporters) and by enhancing the transport systems that bring phosphate into the cells. So, the intestinal absorption of both calcium and phosphate goes up in response to calcitriol. Magnesium and potassium aren’t the main minerals regulated this way by calcitriol in typical physiology contexts, and sodium–chloride absorption isn’t the key effect here. That’s why the mineral pair calcium and phosphate is the best choice.

Calcitriol boosts the gut’s ability to absorb minerals, with calcium and phosphate being the primary targets. It does this by increasing the expression of proteins and channels that move calcium across intestinal cells (like calbindin and related calcium transporters) and by enhancing the transport systems that bring phosphate into the cells. So, the intestinal absorption of both calcium and phosphate goes up in response to calcitriol. Magnesium and potassium aren’t the main minerals regulated this way by calcitriol in typical physiology contexts, and sodium–chloride absorption isn’t the key effect here. That’s why the mineral pair calcium and phosphate is the best choice.

More practice questions