An autorhythmic heart cell is one in which
A) action potentials fire spontaneously.
B) action potentials are stimulated by internal stores of acetylcholine.
C) action potentials always occur at exactly the same frequency.
D) all filaments contract and relax with a high degree of synchrony.
E) action potentials are initiated by the autonomic nervous system.

Question

Quizplus · Accepted Answer

Autorhythmic heart cells have the ability to generate action potentials spontaneously without external stimulation, due to their unstable resting membrane potential.

An Autorhythmic Heart Cell Is One in Which