Q: When cardiac muscle contracts, the heart does what?


Read this paragraph and choose the correct option from the provided answers:

Cardiac muscle is found only in the walls of the heart. It is striated, or striped, because its muscle fibers are arranged in bundles. Contractions of cardiac muscle are involuntary. This means that they are not under conscious control. When cardiac muscle contracts, the heart beats and pumps blood.

 Choices:

- cardiac arrest

- irregular heartbeat

- heart murmur

- pumps blood


A:
pumps blood