BIOL 2443 Lecture Notes - Lecture 2: Myofibril, Hypertrophy, Glycogen

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20 Feb 2019
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Lecture 14 (20): muscle tissue, part 4 chapter 10: muscle fiber types, three types of skeletal muscle fibers, fast fibers, slow fibers. Intermediate fibers: muscles and fiber types (cont"d, white muscle, mostly fast fibers, pale (e. g. , chicken breast, red muscle, mostly slow fibers, dark (e. g. , chicken legs, most human muscles, mixed fibers, pink, muscle hypertrophy, muscle growth from heavy training. Increases mitochondria, glycogen reserves: muscle atrophy, lack of muscle activity. Block 2: reduces muscle size, tone, and power, muscle fiber types (cont"d, physical conditioning. Improves both power and endurance: anaerobic activities (e. g. , 50-meter dash, weightlifting), use fast fibers fatigue quickly with strenuous activity. Improved by: frequent, brief, intensive workouts: hypertrophy. Improves both power and endurance: aerobic activities (prolonged activity), supported by mitochondria, require oxygen and nutrients. Block 2: cardiac muscle tissue, cardiac muscle tissue. Intercalated discs: are specialized contact points between cardiocytes. In blood vessels: regulates blood pressure and flow. In reproductive and glandular systems: produces movements.

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