Intercalated discs and pacemaker cells are characteristic of
A)smooth muscle tissue.
B)cardiac muscle tissue.
C)skeletal muscle tissue.
D)all types of muscle tissue.
E)nerve tissue.

Question

Quizplus · Accepted Answer

Intercalated discs and pacemaker cells are unique to cardiac muscle tissue. Smooth muscle tissue does not have intercalated discs, and skeletal muscle tissue does not have pacemaker cells. Nerve tissue is a separate type of tissue altogether.

Intercalated Discs and Pacemaker Cells Are Characteristic of