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How Does the Addition of 4-Aminopyridine (4-AP) to the Bathing

Question 30

Multiple Choice

How does the addition of 4-aminopyridine (4-AP) to the bathing solution around the neuromuscular junction affect transmitter release?

A) 4-AP blocks sodium channels, preventing action potentials and reducing transmitter release.
B) 4-AP blocks potassium channels, prolonging the duration of action potentials and enhancing transmitter release.
C) 4-AP blocks calcium channels, reducing calcium ion entry and transmitter release.
D) 4-AP enhances potassium channels, shortening the duration of action potentials and reducing transmitter release.
E) 4-AP enhances calcium channels, increasing calcium ion entry and transmitter release.

Correct Answer: