Muscle Physiology Notes - Muscle Physiology Muscle o Comprises largest group of tissues in the body o 3 types of muscle Skeletal muscle make up the

Muscle Physiology Notes - Muscle Physiology Muscle o...

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Muscle Physiology Muscle o Comprises largest group of tissues in the body o 3 types of muscle: Skeletal muscle make up the muscular system; moves bone Only muscle type that is voluntary Cardiac muscle Found only in the heart Smooth muscle Appears throughout the body systems as components of hollow organs and tubes o Muscle is classified in two different ways: Appearance: striated vs. not striated Control: voluntary vs. involuntary o The purpose of all muscle tissue is contraction , this is what makes it unique o Controlled muscle contraction allows: Purposeful movement of the whole body or parts of the body Manipulation of external objects Propulsions of contents through various hollow internal organs Emptying of contents of certain organs to external environment This means excretion of urine and feces out of the body o Structure of skeletal muscle : Muscle consists of a number of muscle fibers lying parallel to one another and held together by connective tissue A single skeletal muscle cell is known as a muscle fiber Skeletal muscle cells are: Multinucleated: one cell has many nuclei Large, elongated, and cylindrically shaped
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