APA 2140 Lecture Notes - Lecture 1: Substantia Nigra, Bereitschaftspotential, Thalamus
15 Oct 2018
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Muscles: wacth video up tp, activates a motor unit, motor unit is the basic unit of movement, fdi- first dorsal interosies. Spinal cord: major functions: supper highway all the information is travelling up and down via efferent (ventral) and afferent(dorsal nerves) Reflexes patella reflex your brain receives message that muscle is shortening by muscles spindles so your body things you need to move it. It sends a signal that its being stretched so it fires more and so the brain sends it to the motor neuron to contract it . **negative feedback loop the contraction counteracts the stretch. Get information i am being stretched motor neuron says okay stretch. Stretch the one that needs to be stretched and in order to do so, you need to shut down the other muscel. Making it so the antagonist can"t react becaseu it is inhibited. Spinal cord- supper highway, short loop, muscle spinal cord back to the muscle.
