PSYC 100 Chapter Notes - Chapter 4: Axon Terminal, Excitatory Synapse, Neurotransmitter Receptor

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PSYC 100 Full Course Notes
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PSYC 100 Full Course Notes
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Document Summary

Processing/retaining information from environmental stimuli regulating body s physiological processes. Nervous system divides into 2 parts, the cns and pns. Brain: brain stem- one of the most primitive regions of brain. Controls physiological functions/automatic behaviour includes medulla, pons, and midbrain: cerebellum- controls posture and coordinates movements, cerebral hemispheres- largest part of brain, most recently evolved, covered by cerebral cortex. Spinal cord- collection of nerve cells attached to brain: controls simple reflexes (ie. pulls away from hot object) Vertebra: bones encasing spinal cord, consitutes vertebral column. Meninges: three-layered set of membrane enclosing brain & spinal cord. Cerebrospinal fluid (csf): liquid filling space between two of the meninges, in which brain & spinal cord float protecting/cushioning them. Capillaries (smallest blood vessels) in most of the body have small openings so chemicals can pass from blood into surrounding tissue. Blood-brain barrier: capillaries in the brain don t have these openings so fewer chemicals can pass from blood to the brain, protecting it.

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