Cardiac muscle cells are both ________.
A) striated and interconnected by intercalated disks
B) smooth and under voluntary control
C) striated and under voluntary control
D) smooth and under involuntary control

Question

Quizplus · Accepted Answer

This is because cardiac muscle cells have striations like skeletal muscle cells but are interconnected by intercalated disks, which allows for coordinated contractions. They are not under voluntary control, as cardiac muscle contractions are regulated by the autonomic nervous system. They are also not smooth muscle cells, as smooth muscles are not striated and are usually under involuntary control.

Cardiac Muscle Cells Are Both ________