PSYC 4140 Lecture Notes - Lecture 9: Frontal Eye Fields, Myocyte, Primary Motor Cortex
29 Sep 2016
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Document Summary
Muscle fibers are made are made of myofibril which are made of sarcomere which is made out of many muscle cells. Neuromuscular junction synapses release acetylcholine which are sensed by ach receptors. This can be blocked by botulin toxin the antibodies stop the ach receptors and keep the muscle from moving. When we decide to move, there is a pathway from the brain to the spinal cord which allows for movement. Rubrospinal tract - involved in some limb movement. Start in the red nucleus in the midbrain and move down to the spinal cord. Starts in lateral vestibular nucleus, down through the medial vestibular nucleusand moves down to spinal cord. Starts in superior collculus, through medulla, and down to spinal cord. Starts in pontine reticular formation, down through medullary reticula formation, and down the spinal cord. Injury to the cerebellum results in impairments to the coordination, accuracy, and timing of movements.
