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PSYCH 102 > Chapters 123 Questions > Flashcards

Chapters 123 Questions Flashcards

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1
Q

how are testosterone levels affected by competition?

A

the levels rise

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2
Q

Hippocrates, Egyptian, and Edwin Smith Papyrus thought of the brain?

A

H: brain is source of intellect
E: discard brain; unimportant
ESP: modern views on the brain

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3
Q

Who believed fluids transmit info in the nervous system

A

Galen

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4
Q

What did Descartes believe about the brain

A

mind-body dualism; mind is etheral

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5
Q

who didn’t agree that fluids transfered info

A

Galvani and du Bois-Reymond

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6
Q

How did the light microscope affect our understanding of neuronal communication?
How about the electron microscope?

A

made it easier to track neuron communications

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7
Q

who discovered languages in the brain?

A

Paul Broca

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8
Q

fMRI vs MRI

A

fMRI: used to assess brain activity
MRI: imaging technique that provides very high res structural images

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9
Q

what info comes from an EEG

A

measures a field potential

a technology for studying the activity of the brain through recordings from electrodes placed on the scalp

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10
Q

what are we looking for when the brain is electrically stimulated

A

whether the area participates in a particular type of behavior

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11
Q

pros and cons of stem cell research

A

pro: learn more about genetic diseases
con: could cause serious damage to the subject

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12
Q

general ethics when using humans for research

A

no coercion
informed consent
confidentiality

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13
Q

how are the meninges ordered?

A

duramatter
arachoid
pia matter

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14
Q

primary purpose of the cerebral spinal fluid

A

floats and cushions brain

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15
Q

which arteries provide circulation to the brain

A

cartoid arteries and the vertebral arteries

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16
Q

correct order of spinal divisions

A 
cervical
thoracic
lumbar
sacral
coccygeal
17
Q 
purpose of:
medulla
Periaqueductal Gray
hippothalamus
hippocampus
amygidalia
A

M: arousal/various
PG: provides relief from pain when activated
HT: regulates hunger, thirst, sexual behavior, and aggression
HC: participates in learning and memory
A:encoding and storing and emotional memories

18
Q

Where the heck is the Reticular Formation, the Primary Visual Cortex, and the Primary
Auditory Cortex

A

on the brain

19
Q

what connects the 2 cerebral hemispheres

A

corpus collapsum

20
Q

which nerves leave the brain not through the spinal cord

A

the cranial nerves

21
Q

what types of nerves transport pain to the brain

A

afferent nerves

22
Q

how has the brain changed

A

the brain size has changed

23
Q

how are the ANS involved in sex

A

SS: arousal (getting started)
PS: resting (coming down)

24
Q

what happens to the body when the sympathetic system is activated

A

fight or flight response

excitement

25
Q

ratio of glia cells to neurons

A

glia are significantly more (millions?)

26
Q

how do differing axon sizes affect the exchange of information

A

when the axon is bigger it takes longer to transmit information

27
Q

where are unipolar, bipolar and multipolar cells found and which is involved in the learning process

A

UP: spinal cord
BP: eye ball area; apart of the learning process
MP: spinal cord, cerebellum, cerebral cortex

28
Q

what type of glia cell is responsible for myelin

A

oligodendrocytes and Schwann cells

29
Q

what is going on with the nervous system of someone with MS

A

the immune system attacks the myelin

30
Q

typical resting potential and action potential

A

RP:-70 mv
AP: +40 mv

31
Q

how do Na and K react differently to action potential

A

entering Na makes ions more positive

opening of K allows K to leave ion and loss of K returns neuron to resting potential

32
Q

what is a threshold and refractory period

A

T: level of depolarization at which an AP is initiated
RP: recording IV returns to resting potential

33
Q

electrical synapse vs chemical synapse

A

electrical: instanteneous, direct movement, excitatory only, large presynaptic neurom
chemical: several miliseconds, release of neurotransmitter, excitatory or inhibitory, mal presynaptic neurons

34
Q

repeat: Ultimately, the nervous system communicates via a complex system of both electrical
and chemical messages.

A

Ultimately, the nervous system communicates via a complex system of both electrical
and chemical messages.

PSYCH 102 (8 decks)

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