Physiology 2130 Lecture Notes - Lecture 6: Primary Motor Cortex, Gamma Motor Neuron, Postcentral Gyrus

• School: Western University
• Department: Physiology
• Course: Physiology 2130
• Professor: Anita Woods

Document Summary

Module 6: nervous system: nervous system made up of cns (central nervous system) and pns (peripheral nervous system, cns brain and spinal cord, pns all other nerves. Facts about the brain: you have more brain cells when you are born than you do right now, action potentials can travel down nerve cells at up to 400km an hour. It is here where fibres cross to other side of spinal cord to innervate muslces on the opposite side of the body. Functional structure of brain ventral view: optic chiasma1 where optic nerves from each eye meet, brain stem2 consists of midbrain, pons, medulla, an extension of the spinal cord, cerebellum3 note the 2 hemispheres. Language and math area3 located in the left hemisphere (for most people) Figure 3: bipolar 2 processes that extend, from the cell body; found in retina of the eye, unipolar 1 process extending from cell body, generally found.