Kinesiology 2230A/B Study Guide - Final Guide: Myocyte, Endoplasmic Reticulum, Myosin Head

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2230A/B
• Professor: Glen Belfry

Document Summary

Muscle belly muscle fibers muscle fiber myofibril sarcomere . Myofilaments (actin is this and myosin is thick) More than 430 muscles in body (act in opposing pairs) Slow oxidative/slow twitch/type i: slow contraction speed, low contraction force, low anaerobic capacity, high aerobic capacity, best for prolonged low intensity exercise. Fast oxidative glycolytic/fast twitch a/ type iia: fast contraction speed, high force of contraction, medium anaerobic capacity, medium aerobic capacity (equal, best for prolonged high intensity exercise; produce energy fast and aerobically (avoid producing lactate) Fast glycolytic/fast twitch b/ type iib: fastest contraction speed, and highest contraction, high anaerobic capacity, low aerobic capacity, best for short, high intensity exercise. The specific fiber type that composes most of your muscle will dictate where you will be most successful in sport (partially has to do with genetics) Controls itself with assistance from nervous and endocrine systems (adrenal gland)