PSYC 1100 Lecture Notes - Lecture 6: Peripheral Nervous System, Cranial Nerves, Spinal Nerve

• School: UConn
• Department: Psychological Sciences
• Course: PSYC 1100
• Professor: Harvey Swadlow

Document Summary

Resting potential: inside neuron is -70mv (measurement of energy) with respect to outside of neuron. Due to different concentrations of ions inside and outside of neuron. Neurons are the longest cells in the body. Action potential: means for fast communication within a single neuron. All or nothing event- can"t be half an action potential. Inside of neuron goes from -70mv to +30mv and back, within a single ms (millisecond) Refractory period (resting period between action potentials) (about 1 ms) Synaptic potentials-- chemical communication between different neurons (similar to hormonal communication, but faster and in a specific space) Neuronal decision to fire action potential is based on both epsps and. Takes inputs from other neurons on which to do. Peripheral nervous system; peripheral nerves can grow back. Controls skeletal musculature (allow you to move); mediates input from senses. Spinal nerves (each segment of spine has a nerve, 30-32 pairs) Controls smooth muscles in organs, vessels, glands, and cardiac muscle.