KINE 1P90 Lecture Notes - Lecture 5: Exosphere, Histamine, Axon Hillock

• School: Brock University
• Department: Physical Education and Kinesiology
• Course: KINE 1P90
• Professor: David Schimmelpenninck

Document Summary

What is not involved in relaxaion of muscle. T tubules need to stop acion to stop contracion, but they do not store calcium so c is the correct answer (not the job of t tubules) calcium is stored in sr. Muscle contracion is always the shortening of the muscle (never lengthening) For a muscle to control it needs a neural impulse travels down path, reaches muscle and excites it. Neural impulses are electrical currents that pass along nerve ibers. A nerve is made of neurons, axon conducts the acion potenial to output zone, received electrical impulse from dendrites. Connecion of neuron to another neuron is called synapses. Myelin insulated the axon and allows for faster nerve conducions (bumps within myleinaion pushes conducions faster) The electrical signal that travels along the nerve is called an acion potenial. What is meant by potenial potenial to generate muscle contracions. Electric charge inside cell is diferent than the electrical charge outside cell (electrically polarized)