Which of the following structures is responsible for movement of action potentials from one contractile cell to the next in the mammalian heart?
A) chemical synapses using acetylcholine
B) chemical synapses using norepinephrine
C) intercalated disks
D) non-myelinated motor neurons

Question

Quizplus · Accepted Answer

Intercalated disks are specialized structures in cardiac muscle cells that facilitate the direct transmission of the electrical impulse (action potential) from one cell to another, enabling coordinated contraction of the heart muscle.

Which of the Following Structures Is Responsible for Movement of Action