PHGY 209 Lecture Notes - Lecture 38: Hyperkinetic Disorder, Neuromuscular Junction, Motor Neuron
12 Jun 2016
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Intention tremor during voluntary movements o no paralysis or weakness: when the overlap is less, the tension is also less, what drives this process? o energy from atp is used. The cycle repeats o riggor mortis when you die, the atp depletes and since the binding of atp is what enables the actin to let go, everything gets stuck and they stay bound, in the uncocked position o the muscle doesn"t fatigue because of a lack of atp: what initiates this process? o the neurons in the motor cortex are activated and they fire action potentials. This is because the muscles in the leg don"t have to have very fine particular movements, they just need a lot of force! o synapse is the neuromuscular junction the specialized region of the muscle fiber (post syn mem) is called the end plate: the process o an action potential is initated and it propagates till it gets to pre syn term.
