ANATOMY 328 Lecture Notes - Lecture 3: Rhabdomyolysis, Gross Anatomy, Stretch Reflex
Document Summary
Properties of muscle tissue: contractility, excitability (initiates contraction, extensibility, elasticity. Terminology specific to muscle tissue: myo-, mys-, sarco- refer to muscle. Functions: produce movement, open and close body passageways, maintain posture and stabilize joints, generate heat. Types: skeletal, cardiac, smooth, each type can be characterized by 2 distinctive features, 1. The presence or absence of light and dark stripes (striations: 2. Whether control of contractions is voluntary or involuntary. Skeletal muscle tissue found in skeletal muscles: has light and dark stripes, elongated, cylindrical skeletal muscle cells are called muscle fibers innervated by the voluntary division of the ns. Cardiac muscle tissue: only in wall of heart striated muscle contraction is involuntary. Smooth muscle tissue found in walls of hollow internal organs other than the heart, like the stomach, bladder, blood vessels, respiratory tubes lack of striations involuntary division of ns controls this.
