What are the histological features of skeletal muscle?

Skeletal muscle cells are elongated or tubular. They have multiple nuclei and these nuclei are located on the periphery of the cell. Skeletal muscle is striated. That is, it has an alternating pattern of light and darks bands that will be described later.

What is the morphology of skeletal muscle?

Morphology of skeletal muscle. Epimysium is the connective tissue surrounding the entire skeletal muscle. Perimysium consists of connective septa from epimysium surrounding bundles of muscle fibers. Endomysium is reticular connective tissue surrounding each muscle fiber.

Does skeletal muscle stain with striations?

The most striking feature of skeletal muscle fibers is the presence of striations that are conspicuous in longitudinally sectioned fibers. The striations are due to the presence of myofibrils, which are cylindrical bundles of thick and thin myofilaments, organized into units of contraction called sarcomeres.

How are skeletal muscle cells arranged?

Skeletal muscle fibers are organized into groups called fascicles. Blood vessels and nerves enter the connective tissue and branch in the cell. Muscles attach to bones directly or through tendons or aponeuroses.

What are the four characteristics of skeletal muscle?

Four characteristics define skeletal muscle tissue cells: they are voluntary, striated, not branched, and multinucleated.

What causes striation in skeletal muscle?

The striated appearance of skeletal muscle tissue is a result of repeating bands of the proteins actin and myosin that are present along the length of myofibrils. Dark A bands and light I bands repeat along myofibrils, and the alignment of myofibrils in the cell causes the entire cell to appear striated or banded.

Is skeletal muscle involuntary?

Both cardiac and smooth muscle are involuntary while skeletal muscle is voluntary.

What is the main function of skeletal muscle cells?

Skeletal muscle cells make up the muscle tissues connected to the skeleton and are important in locomotion. Smooth muscle cells are responsible for involuntary movement, like that of the intestines during peristalsis (contraction to propel food through the digestive system).