Question

___________ muscles cause our heart to relax and contract. *

1 point

a) skeletal

b) cardiac

c) smooth



​

Answer 1

Answer:

The heart is made of a special involuntary muscle called cardiac muscle, and this muscle is made up of cells called cardiomyocytes (which literally means “heart muscle cells” in Latin).

During systole (SIS-tuh-lee), cardiac muscle fibers contract in unison. This makes the heart twist a bit and close in on itself, propelling blood to the lungs and the body. During diastole (die-AS-tuh-lee), the muscle fibers relax and stretch.

Answer 2

Answer:

I think the answer is skeletal