Slides: are there striations across the width of the muscle cells? number of nuclei? what are the size, shape, and arrangement of fibers? what function occurs as a result of the contractions in the selected muscle? (see page 3 of the lesson) what is the relationship between structure and function in the selected muscle? (see page 3 of the lesson) muscle - human cardiac there are striations across the muscle. it only has one nuclei. intestines - outer wall detail (smooth muscle) there are no striations across the muscle. it only has one nuclei. slide 1: muscle- skeletal longitudinal section and slide 2: muscle-skeletal cross section
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The contraction of skeletal muscles makes locomotion, posture, facial expressions and "voluntary movements" of the body possible. These are the muscles that are "attached to the bones". The contraction of smooth muscles results in the involuntary movements of the internal organs of the body. These muscles are form contractile components of the arteries, urinary system and digestive tract. The contraction of cardiac muscles pumps bloods into the blood vessels of the "circulatory system".Ответ:
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