PNB 2264 Lecture Notes - Lecture 12: Muscle Fatigue, Myosin Light Chain, Contracture
16 Aug 2018
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Document Summary
Power: defined as the ebility to move a load (weight) quickly, whats the most powerful muscle in the human body. Speed: the speed at which a muscle can shorten and move a load, whats the fastest human muscle. Tension length curve: maximal cross-bridge formation, optimal length, too far no cbs, no tension, too close no cbs, no tention. Tension velocity curve: dependent on load, load = 0, maximum velocity, load = infinity, velocity = 0. Contraction velocity times tention (t x v = p) Isometric, p = 0 (t x 0 = 0. Nmj no: equals muscle activation equals tension. Biomechanics: equals levers, force angle, moment arm, length, joints, soft tissues equals tension. Cross-sectional area: equals cross-bridge density equals tension. Muscles always work in groups: hip flexor pull up the knee, psoas major and minor, iliacus, rectur femoris, sartorius, tensor fasciae latae, pectineus, adductor longus and brevis and gracilis.
