PE- Cardiac

A cardiac is a Cardiac muscle (also called heart muscle)
is one of three types of the muscles, with the other two
being skeletal and smooth muscles. It is involuntary the
cardiac muscle pump blood throws your body,where to look
at cardiac muscle under a microscope which is under your arm.

Skeletal muscle tissue is found in our skeletal muscles; for
example, the biceps. Cardiac muscle is found in our heart,
and smooth muscle is found in our visceral, or hollow, organs
for example, blood vessels and intestines.

Cardiac muscle cells are located in the walls of the heart,
appear striated, and are under involuntary control. Smooth
muscle fibres are located in walls of hollow visceral organs,
except the heart, appear spindle-shaped, and are also under
involuntary control.