SAR HS 342 Lecture Notes - Lecture 8: Myosin Head, Axon Terminal, Troponin
31 Dec 2018
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Document Summary
Fatigue: decline in muscle power output, accumulation of metabolites which diminishes cross bridging (high-intensity, accumulation of metabolites + glycogen depletion (low-duration) Increased epsp from muscle spindles (contraction: excessive firing of motor neurons in spinal cord, decreases ipsp from gto (lack of relaxation, cured through passive stretching. Characteristics of muscle fiber types: biochemical properties, oxidative capacity, myosin atpase (speed of cross bridge formation, contractile proteins, contractile properties, vmax (speed of contraction, max power, max force, # of motor units recruited; type of motor units. Initial muscle length: neural stimulation, history, frequency of stimulation, twitches, summation, tetanus, efficiency. Fiber type determinant: genetic factors, training factors, age. Training: specify, muscle fibers recruited, energy systems, contractile velocity, type of contractions. Endurance training: fast to slow twitch (increase fast myosin; decrease slow myosin. Increase number of capillaries: less lactate which lowers o2 deficit (less lactate, pc depletion)
