Intrinsic control of heartbeat rate involves what mechanism(s)?
A) The AV node initiates heartbeat, although the SA node can generate a slower beat rate.
B) The atrioventricular bundle initiates signals that travel to the Purkinje fibers.
C) The Purkinje fibers initiate signals that travel to the atrioventricular bundle.
D) The SA node initiates heartbeat and the AV node inhibits the heartbeat.
E) The SA node initiates heartbeat, although the AV node can generate a slower beat rate.

Question

Quizplus · Accepted Answer

The intrinsic control of heartbeat rate involves the SA node initiating heartbeat, although the AV node can generate a slower beat rate. The other options listed do not accurately describe the intrinsic control of heartbeat rate.

Intrinsic Control of Heartbeat Rate Involves What Mechanism(s)