Electrically generated action potentials propagate along a nerve
A) Only orthodromically
B) Only antidromically
C) In both directions
D) Orthodromically for sensory nerves and antidromically for motor nerves

Question

Quizplus · Accepted Answer

Action potentials can propagate in both directions along a nerve fiber. However, propagation is usually more efficient in the forward direction (orthodromically) towards the nerve terminal. Antidromic propagation, in the opposite direction towards the cell body, is less common and is typically seen only in experimental settings or abnormal conditions. The direction of propagation does not depend on whether the nerve is sensory or motor.

Electrically Generated Action Potentials Propagate Along a Nerve