PSYCH101 Study Guide - Midterm Guide: Nicotinic Acetylcholine Receptor, Occipital Lobe, Temporal Lobe

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH101
• Professor: Paul Wehr

Document Summary

A) the (cid:271)i(cid:374)di(cid:374)g (cid:271)et(cid:449)ee(cid:374) (cid:374)eurotra(cid:374)s(cid:373)itters a(cid:374)d re(cid:272)eptors (cid:272)a(cid:374) (cid:271)e e(cid:454)pressed as the (cid:862)lo(cid:272)k a(cid:374)d ke(cid:455)(cid:863) (cid:373)e(cid:272)ha(cid:374)is(cid:373). The (cid:374)eurotra(cid:374)s(cid:373)itter is (cid:272)o(cid:374)sidered the ke(cid:455) a(cid:374)d the re(cid:272)eptor is the lo(cid:272)k. the neurotransmitter ach has to travel through a synapse between an efferent neuron and a muscle cell. When the neurotransmitter attaches to the receptor on the post synaptic membrane, the (cid:373)us(cid:272)le (cid:272)ell, it a(cid:272)ts a ke(cid:455) to (cid:862)u(cid:374)lo(cid:272)k(cid:863) the re(cid:272)eptor so that the re(cid:272)eptor (cid:272)a(cid:374) ope(cid:374) a(cid:374)d release na+ into the cell. The (cid:862)all or (cid:374)o(cid:374)e(cid:863) la(cid:449) refers to the action potential either occurring at full strength or not occurring at all. When na+ starts entering the cell and depolarization starts happening, it has to rea(cid:272)h a threshold pote(cid:374)tial for the a(cid:272)tio(cid:374) pote(cid:374)tial to o(cid:272)(cid:272)ur. If the threshold is(cid:374)"t rea(cid:272)hed, no action potential will occur. If the threshold potential is reached, then an action potential will be fired at full strength no matter how strong the stimuli was.