What are two major types of smooth muscle

Skeletal muscle skeletal muscle, attached to bones, is responsible for skeletal movements.This staircase arrangement of actin and myosin is much different than the structure in skeletal and cardiac muscle.Multiunit smooth muscle is located in the irises and the walls of blood vessels.There are two major types of smooth muscle:The other two types of muscle are smooth and striated (skeletal) muscle.cardiac muscle, the third kind of muscle (the other two being skeletal and smooth.

The two types have different locations in the body and have different characteristics.The sheets give this muscle tissue a smooth appearance.Muscles make up most of the fleshy parts of the body and average 43 percent of the body's weight.They lack cross striations and hence the name smooth muscle.From top, lm × 1600, lm × 1600, lm × 1600.

As seen in the image below, the actin and myosin filaments in smooth muscle are arranged in a stacked pattern across the cell.This removal of ca++ ends the contractile cycle and the muscle relaxes.Muscle tissue is classified in three ways based on the tissue's function, shape, and structure:(a) skeletal muscle cells have prominent striation and nuclei on their periphery.The single unit smooth muscles contract and relax together, as the nerve impulse excites only one muscle cell, and that is passed on to other cells through gap junctions.

For this reason, numerous tissues throughout the body are derived from neural crest cells.