Which is a difference between cardiac muscle and skeletal muscle? A.
Cardiac muscle is involuntary while skeletal muscle is voluntary.
B.
Cardiac muscle is voluntary while skeletal muscle is involuntary.
C.
Cardiac muscle is smooth muscle while skeletal muscle is striated muscle.

D.
Cardiac muscle is voluntary while skeletal muscle is smooth muscle.

Skeletal muscle is voluntary and responds to conscious stimuli. ... Cardiac muscle is involuntary and found only in the heart. Each cell is striated with a single nucleus and they attach to one another to form long fibers. Cells are attached to one another at intercalated disks.

Explanation:

answer; the national uniform billing committee(nubc);

when you rub, you also apply pressure, that pressure can urge the poop to come out. i think that when your rubbing, you also might be slightly breaking it up and that can further fill the stomach.