Because they resemble a trapezium, or diamond-shaped quadrilateral
I believe the trapzius in the middle of the back, possibly with an assist of the latissimus dorsi.
It is called cardiac muscle, or myocardium.
strap Muscle
Your heart is a muscle. It is also called the myocardium. The muscle cells in the heart muscle are called myocardiocytes.
It is called involuntary muscle or smooth muscle.
A single muscle cell is called a muscle fiber.
Your thigh muscle is called your Quadricep.
One type of muscle is called smooth muscle. A smooth muscle works involuntarily. The other type of muscle is called skeletal muscle. Skeletal muscle only works with a command.
This muscle is called the extensor muscle. There are specific names for different joints.
Voluntary.
a muscle fiber
Enlargement of muscle cells is called hypertrophy.