Question

Beating of the heart is contraction and relaxation of the heart muscle tissue.

• A. True
• B. False

Answer 1

The correct option is A True

$\bullet$ Many heart muscle cells join to form heart muscle tissue. They contract and relax to enable beating of the heart.
$\bullet$ Beating of the heart is not always same. It changes according to our physical activity. For example: The heart beat increases when we run or exercise.