PSYC 3 Lecture Notes - Lecture 6: Parasympathetic Nervous System, Multipolar Neuron, Somatic Nervous System

• School: Irvine Valley College
• Department: Psychology
• Course: PSYC 3
• Professor: mis

Document Summary

Cns and pns (this not in book!) Information processing and information transmitting element of the nervous. Dendritic spines what you get first out of enriched environment is more. Chemical signal at soma, electrical at axon. Fatty wrapping around axon speeds up action potential. Pieces in btwn them with exposed axon (called node of ranvier) Axon is actually really thin compared to rest of neuron. A neuron with one axon and many dendrite attached to the soma. Lipid bilayer that defines the boundary of cell. Organelle that extracts energy from nutrients; atp. Strands of proteins linked together to give the cell shape. Dna contains the code for making all sorts of proteins. Functions of the interactions of these proteins. Programmed cell death (apoctosis neuron can decide to kill itself) Part of it has to do with saving energy (use it or lose it) If neuron doesn"t have enough oxygen or glucose for short period of time, they die.