PSY-2012 Lecture Notes - Lecture 2: Parasympathetic Nervous System, Peripheral Nervous System, Cerebral Cortex
Document Summary
The nervous system consists of the : central nervous system, peripheral nervous system. Peripheral nervous system: links cns to sensory receptors (touch, taste, etc. ), muscles, and glands: consists of all nerves in the body outside the brain and spinal cord, includes two components: somatic and autonomic system. Somatic: conveys info between cns and body, voluntary movement: interacts with the external environment, sends signals from the sense organs and skin to cns, sends signals from the cns to the skeletal muscles, directing voluntary. Autonomic: involuntary movement movement: made up of sympathetic and parasympathetic nervous system, regulation of internal environment, connects cns to the involuntary muscles and organs and to the bodies hormone producing glands. Sympathetic: response to emotion, fight or flee, increase heartrate, pupils dilate, adrenaline flowing, etc. Parasympathetic: rest and digestion, returns body to normal equilibrium, fixes sympathetic response. Brain: forebrain (cerebral cortex, hippocampus, amygdala), midbrain, and hindbrain.
