Psychology Quiz 3 Flashcards Preview

Psychology > Psychology Quiz 3 > Flashcards

Flashcards in Psychology Quiz 3 Deck (45)
Loading flashcards...
1

cells that receive, integrate, and transmit information

Neurons

2

neurons that communicate with other neurons

interneurons

3

receive signals from outside the nervous system

sensory neurons

4

carry messages from nervous system to muscles that move the body

motor neurons

5

cell body; contains cell nucleus and most of the cell

Soma

6

"mothering" cell to neurons

Glia

7

Specialized parts of a neuron that receive info

Dendrites

8

Info passes from Dendrite --> Soma --> Axon (T/F)

T

9

Specialized parts of a neuron that transmit info to other neurons or muscle glands

Axons

10

People with MS lack what?

Myelin Sheath that insulates the axon and speeds up transmission signals; MS slows or prevents nerve transmission to certain muscles

11

Small knobs that secrete chemicals called neurotransmitters

Terminal Buttons

12

Points where neurons interconnect; junction where info is transmitted from one neuron to another

Synapse

13

Insulate, Nourish, and direct growth of neurons

Glia (about 10 glia cells per neuron)

14

Brief shift in a neuron's electrical charge that travels along an axon; signal that travels along the axon

Action potential

15

Explain the "all or none" principle

The size of action potential is not affected by the strength of a stimulus (ex. whatever you've eaten (mexican...chinese) if you're full, you're full)

16

A signal that must be transmitted from a neuron to other cells

neural impulse (takes place at synapses)

17

neuron that sends the signal across the gap

presynaptic neuron

18

neuron that receives signal from presynaptic neuron

Postsynaptic neuron

19

chemicals that transmit info to one neuron to another

neurotransmitters (stored in synaptic vesicles)

20

Dopamine

abnormal activity at dopamine synapses is thought to play a role in the development of schizophrenia—irrational thought, hallucinations, etc. They believe overreactivity in dopamine circuits contributes because an antagonist—that reduces the neurotransmitters activity helps

21

Examples of neurotransmitters

Dopamine (cocaine makes these synapses go crazy
Seratonin (lack may lead to eating disorders, depression)
Endorphins (runners high...contribute to pain relief)

22

Made up of all the nerves that lie outside the brain and spinal cord

Peripheral Nervous System

23

Made up of nerves that connect to voluntary skeletal muscles and sensory receptors

Somatic Nervous System

24

Controls automatic, involuntary, visceral functions like heart rate, breathing, etc.

Autonomic Nervous System

25

When a person is automatically aroused and body functions speed up...what part of the ANS is working?

Sympathetic

26

Conserves bodily resources to conserve energy

Parasympathetic nervous system

27

Consists of brain and spinal cord

CNS

28

Monitors electrical activity of the brain over time

EEG

29

Involves destroying piece of the brain (only done in animals...inhumane)

Lesioning

30

Involves sending weak electronic current to brain to stimulate it

ESB