KINE 1020 Lecture Notes - Lecture 43: Myocyte, Neuromuscular Junction, Frontal Lobe
1 Feb 2018
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Jan 15 - continuation of muscle structure and function. Mitochondria next to myofibrils for the atp. Things that determine speed: how fast myosin twitches and and how quickly you release calcium. Most time athletes have more muscle fibers. Ability to be so pwerful and fast determined on how many fast twitch muscle fibers. What makes a fast and slow twitsch is how fast the myosin moves. Slow twitch = slower, not as much power, endurance. Some of the fastest people in the world have extremely fast calcium release cycle. Quality of life is a state of physical, mental, and emotional. Fast twitch = speed, power, fatigue how healthy your muscles are. Next to motor cortex and other parts of the brain. Generates signal down spinal cord out to brain to whatever nerve goes to muscle needing contraction. Action potential: a lot of na+ outside a nerve cell and k+ inside a nerve cell.
