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Flashcards in Unit 2- Deck (62):
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What is the charge of the neuron at resting potential

Negative

1

Depolarizations

Negative to positive voltage shift

2

Action potential

Shift change

3

Absolute refractory period

The period immediately following the firing of a nerve fiver when it cannot be stimulated no matter how great a stimulus is applied

4

Relative refractory period

Period shortly after the firing of a nerve fiver when partial depolarization has occurred and a greater than normal stimulus can create a second impulse

5

All or non law

The strength of a response of a nerve cell is not dependent upon the strength of a stimulus

6

Synaptic pruning

Making room for new connections

7

Soma

Cell body

8

Dendrites

Receiver

9

Axon

Transmitter

10

Myelin sheath

Insulter

11

Terminal buttons

Storage

12

Neurotransmitter

Terminal buttons

13

Synapse

Junction

14

Glia

Glue of neuron

15

Medulla

Attaches to spinal cord
Unconscious function and control

16

"The bridge"

Pons

17

Pons

Fibers that connect brainstem to cerebellum

18

What does the pons control

Sleep
Arousal
Breathing

19

Cerebellum

"Little brain"

20

Acetylcholine

Skeletal muscles
Attention
Arousal
Memory

21

What is ach stimulated by

Nicotine

22

What is associated with ACh

Alzheimer's

23

Dopamine

Voluntary movement

24

What increases DA activity

Cocaine and meth

25

What disorder is associated with DA

Parkinsonism
Schizophrenia
Addictive disorders

26

Norepinephrine

Mood and arousal

27

What increases activity of NE

Cocaine and math

28

What disorder is associated with NE

Depression

29

Serotonin

Sleep and wakefulness
Eating
Aggression

30

What drugs affect serotonin

Anti-depressants

31

What disorders are associated with serotonin

Depression
Eating disorder

32

What are the subdivisions of the peripheral nervous system

Somatic and autonomic

33

Somatic nervous system

Voluntary skeletal muscles
Sensory receptors

34

Autonomic

Involuntary muscles

35

2 branches of autonomic

Sympathetic
Parasympathetic

36

Sympathetic

Flight

37

Parasympathetic

Fight

38

Hindbrain

Cerebellum
Medulla
Pons

39

Midbrain

Between hindbrain and forebrain

40

Midbrain controls what

Sensory
Vision
Hearing

41

Forebrain

Largest and most complex region of the brain

42

What is in the hindbrain

Thalamus
Hypothalamus
Limbus
And cerebrum

43

Thalamus

Sensory

44

Hypothalamus

Biological beeds

45

Four Fs

Fighting
Fleeing
Feeding
And fornicating

46

Cerebral
Cortex

Convoluted outer layer of the cerebrum

47

Corpus callosum

Structure that connects the two hemispheres

48

Broca's area

Speech

49

Wernickes

Language comprehension

50

Most common form of brain imaging

computerize tomography

51

Brain imaging through slices

Ct

52

Maps brain function over time;glucose

Positive emission tomography

53

Endorphins

Resemble opiate drugs
Pain relief

54

Limbic system

Center of emotion

55

What is a part of the Limbic system

Hypothalamus
Hippocampus
Amygdaloid
Olfactory

56

Hippocampus

Learning and memory

57

Amygdala

Emotion of dead and aggression

58

Cerebrum

Center of complex thought
Sensing, thinking, learning, emotion,
Consciousness and voluntary movement

59

Walter cannon

Fight or flight

60

Agonist

Chemical that mimics the action of the neurotransmitter

61

Antagonist

Opposes neurotransmitter action