Physiology 2130 Lecture Notes - Lecture 6: Amygdala, Xerostomia, Bronchiole
1 Jan 2017
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Document Summary
Action potentials travelling down motor neurons cause muscles to contract. The brain controls the muscles to perform voluntary movements. Activating muscle cells sent down the corticospinal tract. The motor system includes: the supplementary motor area, the premotor area, primary motor complex, basal ganglia, various spinal pathways, the motor nerves going to the muscles, muscle receptors. Structure and organization of the motor system the premotor cortex. Damage to the premotor cortex: not able to select the appropriate strategy to reach the food. Structure and organization of the motor system the supplementary motor cortex. The premotor cortex has developed the appropriate sequence of muscle contractions. After, that information travels to the supplementary cortex (located in the frontal lobe) to program the motor sequences to accomplish a task. This area is particularly important when it comes to programming the muscle to open and close the hand and for repetitious movements since they can be complex movements.
