The heart beats because of cardiac muscle's specialized properties, such as
A) high resistance to outside stimulation.
B) an external pacemaker system.
C) a low level of electrical activity.
D) cell communication via gap junctions.
E) rapid communication through release of neurotransmitters between cells.

Question

Quizplus · Accepted Answer

Cardiac muscle cells are connected by gap junctions, which allow for the rapid spread of electrical signals across the heart. This coordinated communication between cells is essential for the synchronized contraction of the heart and the maintenance of a normal heart rhythm.

The Heart Beats Because of Cardiac Muscle's Specialized Properties, Such