Is the heart a muscle

Answer

The heart is a muscular organ found in all vertebrates that is responsible for pumping blood throughout the blood vessels

go to wikipedia:http://en.wikipedia.org/wiki/Heart
yes the heart is a muscle
yes, it is a cardiac muscle.
Heart does count as a muscle but it is made from its own special type! There are 3 types of muscle. Skeletal, smooth and cardiac (heart).

Cardiac muscle is made up of muscle cells that form a functional syncitium, which pretty much means the cells are joined together. This helps to send down the electrical signals which tell the heart to contract at once.
yes it is

yes, the heart is a musle.

The hart is a group of muscles and valves that make up the pump that pushes and pulls the blood around the body.