PSYC 100 Lecture Notes - Cerebrospinal Fluid, Neuroglia, Meninges

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Ingrid Johnsrude

Document Summary

Week 7 lecture- the brain + central nervous system. The association areas of the brain are larger in humans than in other mammals. Association cortex: parts of the brain that are not sensory or motor; possibly for cognition. Meninges (3 flexible, cushioning layers between the skull and brain that provide protection) Blood vessels (feeds nutrients to the brain, gets rid of waste) (arteries carry fresh, o2"d blood, veins carry used blood) (canals carry used blood and cerebral spinal fluid away) Cerebral spinal fluid (4 ventricles in the brain: hollow spaces filled with csf) (supports and cushions the brain) Grey matter(outside, folded covering) vs white matter(inside wrinkles and myelin) Neurons communicate with each other chemically through synapses--> using. Excitory (+ potential generated from dendrite to cell body) Inhibitory (- potential created from dendrites to cell body) With input from other cells, the cell body will decide to fire or not, based on if its action potential passes the threshold.