In perfusion-limited uptake, what's the main controlling factor?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Pharmaceutics Distribution of Drugs Exam. Study with interactive questions, complete with hints and explanations. Maximize your readiness for the exam day and excel!

Multiple Choice

In perfusion-limited uptake, what's the main controlling factor?

Explanation:
The driving factor in perfusion-limited uptake is how much blood can reach the tissue. In this scenario the drug crosses cell membranes rapidly, so the bottleneck isn’t getting into the cells but delivering the drug to the tissue via the bloodstream. Higher tissue blood flow means more drug is delivered per unit time and uptake is faster; reduced flow slows uptake accordingly. Temperature and membrane barriers aren’t the limiting steps here, and while protein binding can affect how much free drug is available, the rate at which the tissue is supplied by blood flow remains the key control.

The driving factor in perfusion-limited uptake is how much blood can reach the tissue. In this scenario the drug crosses cell membranes rapidly, so the bottleneck isn’t getting into the cells but delivering the drug to the tissue via the bloodstream. Higher tissue blood flow means more drug is delivered per unit time and uptake is faster; reduced flow slows uptake accordingly. Temperature and membrane barriers aren’t the limiting steps here, and while protein binding can affect how much free drug is available, the rate at which the tissue is supplied by blood flow remains the key control.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy