Anatomy and Physiology Quiz
15 questions · no time limit
0:00
FOUNDATIONS
Question 1 of 15
No time limit
Current
Answered
Flagged
Not seen
During repetitive high-frequency stimulation of a motor neuron, the amplitude of muscle contractions gradually decreases even though each nerve action potential remains constant. Calcium indicator dyes show that presynaptic calcium levels remain elevated throughout stimulation. What is the most likely explanation for the declining muscle response?
YOUR PROGRESS
15
QUESTIONS
Ready when you are
Answer in any order. Your progress shows here as you go.
QUESTIONS
KEYBOARD
Pick an answer ABCDE
Next question ↵→
Previous ←
Flag for review F
Answers save as you go · flagged questions come back at the end