ANPS 019 Lecture Notes - Lecture 16: Cardiac Muscle, Skeletal Muscle, Smooth Muscle Tissue
10 Oct 2018
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Document Summary
Skeletal muscle is associated with the bony skeleton and consists of large cells that bear striations and are controlled voluntarily. Cardiac muscle occurs only in the heart and consists of small cells that are striated and under involuntary control. Smooth muscle is found in the walls of hollow organs and consists of small elongated cells that are not striated and are under involuntary control. Ability to receive and respond to electrical stimulation: excitable- , conductive- , contractility- , extensibility- , elasticity- . Electrical signals can move & spread along membranes. Ability to recoil and resume resting length after stretch. 5 major muscle functions: produce movement, maintain posture and body position, protection and support, maintain normal body temperature, storage and movement of materials. A skeletal muscle is composed of thousands of muscle cells, connective tissue, blood vessels & nerves. Muscle cells are typically as long as the entire muscle. The epimysium, perimysium, and endomysium are three concentric layers of connective tissue.
