When an impulse reaches a synapse:
A) two nerve fibers come in direct contact.
B) impulses will pass in either direction.
C) an electrical spark will jump the gap.
D) chemical transmitters are released.

Question

Quizplus · Accepted Answer

When an impulse reaches a synapse, chemical transmitters are released. This allows the impulse to be transmitted from one nerve cell to another or to an effector cell such as a muscle or gland cell. The chemical transmitters bind to receptors on the receiving cell, causing it to generate its own electrical impulse.

When an Impulse Reaches a Synapse