PSYB65H3 Chapter Notes - Chapter NKT 2: Golgi Apparatus, Lysosome, Neurotransmitter

• School: UTSC
• Department: Psychology
• Course: PSYB65H3
• Professor: Konstantine Zakzanis

Document Summary

Neuron: basic info-processing and transmission unit of the ns. Basic components: soma, dendrites, axons, terminal boutons. Enables the reception, processing, transmission of neural info: soma. Contains cell nucleus and structures responsible for the life processes of the cell. Mole(cid:272)ules esse(cid:374)tial for the (cid:272)ell"s fu(cid:374)(cid:272)tio(cid:374)s are for(cid:373)ed here: dendrites. Branch-like processes extending from the cell soma. Receive info from terminal boutons of adjacent neurons or from sensory receptors. Neural info transmits passively to get to the soma: nucleus. I(cid:374)(cid:272)ludes (cid:272)ell"s dna (cid:894)orga(cid:374)is(cid:373)s ge(cid:374)eti(cid:272) i(cid:374)fo(cid:895), encased in its own membrane: axon hillock. Action potential develops and is transmitted along the axon to the terminal boutons at a speed of 1 to 100 m/s: axon. Long, thin cytoplasmic branch extending from axon hillock. Usually ends with many branches which helps it to communicate with other nerve cells. Longest axon = those that connect the toes to the brain stem.