HLSC 2400U Lecture 8: movement and peripheral nervous system
Document Summary
Bg (basal ganglia) adjust activity of umn, smooth and coordinated, inhibits umn so that movement is fluid. Cerebellum select these order of muscles, actual vs intended movement, coordination. Somatosensory be aware of surroundings before you make a movement. Postural control: walking and you start to slip or before an action has started. Vision is very important, use somatosensation to perform an action. Using our hands and vision to estimate what is required ex: reach for cup, activate muscles to grab the cup, need to measure out the width, the size, the texture, etc. Reach for the cup, if it is slipping, the body alters muscle inhibition. Spinal nerve has to exit on vertebral column on each side. Mixed nerves sensory and motor as well as autonomic nerve fibres. Sympathetic ganglia neurons that affect our homeostasis, regulate blood flow and hormone levels, cell bodies are located in the periphery.
