PSYC 1100 Lecture Notes - Lecture 4: Peripheral Nervous System, Central Nervous System, Ion Transporter

• School: UConn
• Department: Psychological Sciences
• Course: PSYC 1100
• Professor: Eric Lundquist

Document Summary

Reflex; an automatic, stereotyped movement produced as the direct result of a. 1. how does a neuron fire? (what is the nerve impulse?) 1. start with electrical resting potential: inside of cell is 70 mv more. 4. so much na+ enters that the potential doesn"t just go to 0 is shoots. 2. stimulation of neuron lets in na+ ions, which makes the inside more. 3. when enough na+ ions get for the potential to be reduced to -55 mv, negative than outside due to cl- ions inside the na+ ions outside (so. Just more frequent one (up to 1000/sec), and in more neurons. Action potential travels down length of axon by depolarizing neighboring. Threshold : below that voltage is not action areas. 2. how does it cause the next neuron to fire? (how does it communicate?) to 100 m/sec. 2. terminal buttons contain little sacs (vesicles) of chemicals.