BIO SCI E112L Chapter Notes -Triceps Brachii Muscle, Biceps, Cardiac Muscle
7 Dec 2014
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1: our skeletal muscles also generate heat an contribute signi cantly to the homeostasis of body temperature. When cold conditions threaten homeostasis, the brain may direct our muscles to shiver, creating additional heat. 2: most skeletal muscles are attached to the bones of the skeleton, enabling these muscles to control body movement. Bers are large, mutinucleate cells that appear striped or striated under the microscope. 3: cardiac muscle {kardia, heart} is found only in the heart and moves blood through the circulatory system. Bers are also striated but they are smaller, branched, and uninucleate. Cells are joined in series by junction called interecalated disks. 4: striated muscles {stria, grove} alternating light an dark bands seen under the light microscope. 5: smooth muscle: the primary muscle of internal organs and tubes, such as the stomach, urinary bladder, and blood vessels. Its primary function is to in uence the movement of material into, out of, and within the body.
