Analysis Of Cardiac Muscles

Structure: Skeletal muscle is called striated because of its appearance consisting of light and dark bands. A single skeletal muscle cell is long and approximately cylindrical in shape, with many nuclei located at the edges of the cell.
Function: Movement of the skeleton under concious control, including movement of limbs, fingers, toes, neck. Movement of tissues of facial expression under concious control, such as ability to smile and to frown.
Structure: Cardiac muscle fibers are striated, branched and have a single central nucleus. These fibers are attached at their ends to adjoining fibers by thick plasma membranes called intercalated discs.
Function: Pumping of blood through the heart: Alternate contraction and relaxation of cardiac muscle pumps. De-oxygenated blood through the Right Atrium and Right Ventricle to the lungs, and oxygenated blood through the Left Atrium and Left Ventricle to the aorta, then the rest of the body.
S- one nuclei, C- one nuclei.

Cardiac muscle contraction blood is squeed through thin-walled upper chambers and atria contraction of thick muscle of lower chambers the ventricle. Contraction of both atria which forces blood through the AV valves into ventricles. The atria walls contraction not very pwoerful. Improve the hearts efficiency by forcing blood into ventricles. While ventricles contracting forcing blood through semilunar valves the atria relaxed filling the blood. Ventricles have contracted all chambers are relaxed for short period of