What Is The Structural And Functional Unit Of Skeletal Muscle Group Of Answer Choices?

What is the function of skeletal muscle?

Skeletal muscles enable humans to move and perform daily activities.

They play an essential role in respiratory mechanics and help in maintaining posture and balance.

They also protect the vital organs in the body..

Where are skeletal muscle cells found?

Skeletal muscle fibers occur in muscles which are attached to the skeleton. They are striated in appearance and are under voluntary control.

What is the structural and functional unit of skeletal muscle?

The structural and functional unit (smallest contractile unit) of skeletal muscle is the SARCOMERE,which is bounded by Z lines. Each myofibril is a long series of sarcomeres joined end to end by Z lines.

What are the microscopic structures of skeletal muscle?

Each myofibril consists of two types of protein filaments called thick filaments and thin filaments. The thick filaments and the thin filaments within myofibrils overlap, and the sections where they overlap and occur together are called sarcomeres.

What is the shape of a skeletal muscle?

Skeletal muscle fibers are cylindrical, multinucleated, striated, and under voluntary control. Smooth muscle cells are spindle shaped, have a single, centrally located nucleus, and lack striations.

What are the 4 main functions of skeletal muscle?

Terms in this set (4)Movement. attaches to bones to provide movement.Heat and Energy. produces heat and energy for the body.Posture. maintains posture.Protection. protects internal organs.

What is the smallest unit of skeletal muscle?

2.1. The smallest contractile unit of skeletal muscle is the muscle fiber or myofiber, which is a long cylindrical cell that contains many nuclei, mitochondria, and sarcomeres (Figure 1) [58]. Each muscle fiber is surrounded by a thin layer of connective tissue called the endomysium.

What are the components of skeletal muscle?

Skeletal muscles contain connective tissue, blood vessels, and nerves. There are three layers of connective tissue: epimysium, perimysium, and endomysium. Skeletal muscle fibers are organized into groups called fascicles. Blood vessels and nerves enter the connective tissue and branch in the cell.