3100:201 Lecture Notes - Lecture 10: Endoplasmic Reticulum, Myocyte, Skeletal Muscle
Document Summary
1chs 10 and 11 (uaf14) - muscle tissue and muscular system. Z disc - sarcomere boundary, thin filaments attached. H zone - only thick filaments, within a band. Muscle metabolism: atp required for power stroke/cross bridge release, active transport of calcium into. 4: oxygen debt (recovery oxygen uptake, post-exercise elevated oxygen need, resynthesize cp, oxymyoglobin, glycogen, metabolize lactic acid, support elevated metabolic rate due to temp. increase and tissue repair. Cardiac muscle: involuntary, striated, uninucleate, many mitochondria, aerobic, branched (y shape, intercalated discs with gap junctions, tension sustained approx. 200 msec: autorhythmic: nerve impulses, chemicals modify contraction. Muscle tissue growth, repair: all muscle tissues grow by hypertrophy, limited regeneration of skeletal, cardiac muscle cells, moderate regeneration of smooth muscle. Skeletal muscles and movement (ch 11: 11. 1: attachments, tendon, aponeurosis, origin, insertion, movement: levers, muscle spans joint, terms, fulcrum - joint, load - weight or mass opposing movement, effort - tension of contracting muscle.
