BIO 468 Lecture Notes - Lecture 7: Circulatory System, Skeletal Muscle, Central Nervous System
9 Apr 2018
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Summation: these lag times (above) are what allow for summation, the action potential is fast so communication is fast, while retraction is relatively slow, u(cid:373)(cid:373)atio(cid:374) is i(cid:373)porta(cid:374)t i(cid:374) the (cid:271)od(cid:455)"s a(cid:271)ilit(cid:455) to produ(cid:272)e (cid:373)us(cid:272)le (cid:272)o(cid:374)tra(cid:272)tions of variable strengths. Muscle fatigue: true muscle fatigue, depletion of atp and/or glycogen reserves, lactate buildup (acidosis) Control of locomotion: animals move in response to environmental cues, sensory system , central nervous system , motor neurons , muscles, cardiovascular system , blood vessels, respiratory system , blood vessels, digestive system , blood vessels. Musculoskeletal systems: muscles generate force required to move from place to place, properties of muscles determine movement style and abilities, arrangement of contractile proteins alter cross-bridge cycling dynamics, cellular machinery of excitation-contraction coupling affects speed & power. Fast glycolytic fibers (type 2: properties of muscle, rapid contraction speed, lots of polymerase chain reactions (pcr) and atp, lots of glycolytic enzymes, high tolerance for acidosis, fatigue quickly.
