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Muscle Tissue

Human Anatomy - Muscle Tissue - Skeletal + Cardiac + Smooth

QuestionAnswer
skeletal muscle tissue - structure structure - fibers are long, cylindrical, parallel, unbranched, multinucleated, striated (alternating light and dark bands)
cardiac muscle tissue - structure structure - fibers are short, striated, and bifurcated (branched), with one or two centrally located nuclei; intercalated discs between cells (strong gap junctions)
smooth (visceral) muscle tissue - structure structure - fibers are fusiform (spindle-shaped), short, nonstriated, and contain one centrally located nucleus
skeletal muscle tissue - function function - moves skeleton; responsible for voluntary body movements; locomotion; heat production
cardiac muscle tissue - function function - involuntary contraction and relaxation help pump blood on heart
smooth (visceral) muscle tissue - function function - involuntary movements and motion; moves materials through internal organs
skeletal muscle tissue - location location - attaches to bones or sometimes to skin (e.g. facial muscles); also in the voluntary sphincters (lips, urethra, anus)
cardiac muscle tissue - location location - heart walls (myocardium)
smooth (visceral) muscle tissue - location location - walls of hollow internal organs (vessels, airways, stomach, bladder, uterus)
Created by: allerlei