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Flashcards in Chapter 3 Deck (31):
1

What is a neuron

They are cells in the nervous system that communicate to perform information-processing tasks

2

What is a dendrite?

recevie information from other nueron and relay to cell body

3

What is an Axon

carries informationt tp other nuerons, msuclas and glands

4

what are axon convered in?

Myelin sheaths

5

What is a glial cells?

To support the axon, and to digest parts of dead neurons.
Form myelin to help axon

6

Synapse

Region between the axon of one or more neuron and the dendrites or cell body of another
fundamental to comminvation between nuerons

7

What are the 3 tyypes pf nuerons

senor, motor, internurons

8

what are senrosy neurons

recieive informatiion from the external worl and send to the brain via te spical cod

9

motor nurons

crry singal from the spincal cord to the muslce to prouce movemtn

10

internurons

carry information

11

What are the 2 stages to communicate info between nuerons

conduction
transmission

12

what is conduction

movement of an electrical signal within neurons, dendrites

13

what is transmission

movement of electrical signals from one nuerons to another over the synaps

14

what is resting potential? and what is the resting potential of a nueron.

Resting potential is the difference between the inside and outside of a neurons cell membrane,
-70 mv

15

What is action potential

is is an electrical signal that goes along the length of th neurons axon

16

what is the refactory period?

it is the time following an AP where an new Ap connot be initated

17

what goes out, what goes in?

Na+ goes out amd K+ go in

18

Purkinje cells

connected to internuerons and the cerebellum to the rest of the brain and spinal cord

19

Pyramidal cells

cerebral cotrex, triganglugar cell body and single dentrid

20

Termincal buttons

knoblike structures that branch out from axon and are filled with vesciles containing N+

21

Nuero transmitters

checms that transmit info across the synpase to receiveing nueron dendtrites

22

Receptors

parts of the cell membrane that receieve nuerotransmitters and initiate or prevent new electrical singals

23

steps in synaptic transmittion

- resting potential
- AP travels down axon to simulate relaaes of NT from vescibles to synpase
- NT binds to receptor sites on dendtrie to post synaptics neiron
-- new Ap initited in the neuron

24

aceycholine

voluntary motor control
regulation of attention
learning
sleeping
dreaming
memory

25

dopamine

motor behvaviour
motivation
pleasure
emotions arousal
role un drug addiction
schizophernia

26

Glutamate

excitory NT

27

GABA

inhibitory NT
stops firing nuerons
seizers

28

norephinerphrine

states of vigilanace and danger

29

serotonin

regulation of sleep, wakefullness, eating and agressive behavuor

30

endomorphines

with within pain pathwyas and emotion center

31

what is the difference between agonists and antagonist

agonist increase the action of NT and and antagonist block the function of NTs.