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MCAT PSYCH/SOC > brain stuff > Flashcards

Flashcards in brain stuff Deck (33):
1

basic functions of nervous system?

motor (control of skeletal muscle), sensory (senses), and automatic (reflexes)

2

higher basic funct of the nervous system?

cognition, emotions, consciousness

3

afferent

= towards brain

4

efferent

= away from brain --> to neuromuscular junction

aka lower motor neurons (LMN)

5

fasciculation

involuntary twitches of skel muscle

6

hypotonia

decrease in tone (contraction) of skel muscle

7

hyporeflexia

decrease in muscle stretch reflex

8

mechanoreceptor

position/vibration/touch = fast

stimuli: mechanical stress, baroreceptors, sound waves, gravity

9

thick myelin sheath = fast/slow?

fast

10

temporal lobe

on the sides of temples!!

"tempo" = think auditory

& wernicke's area (speech interpretation...)

11

frontal lobe

motor cortex,

prefrontal cortex (complex thinking =executive funct, surprises/direct other areas of brain),

Broca's area (speech production)

12

parietal lobe

"piranha" bite you on TOP of your head, you FEEL pain.

somatosensory cortex - receiving sensory signals from skin,

& spatial manipulation

13

occipital lobe

picture octopus with eyes on its tentacles.

vision
"striated cortex"

14

which sense does not cross over? (R to L, L to R)

smell!! ipsilateral same side

15

left hemisphere (= R hand dominate) includes what features?

language
math

16

how does 2 hemisphere communicate?

corpus collosum

17

old brain consists of

brain stem
reticular formation
thalamus
cerebellum

18

reTICULar formation

is part of brains stem, structure runs up

send info from brain stem to other parts of the brain

filter and send info str8 to thalamus

alertness & motivation

19

cerebellum

"ballerina bella"
must have BALANCE!!
balance voluntary movements

alcohol makes you lose balance bc of it affect this.

20

brain stem

cross over point for nerves

medulla and pons -> control HR, breathing,

consists of : pon, medulla, reticular formation (pavlov's really freaking mad)

21

thalamus

above brain stem

relay station of eyes and ears info
no smell go thru!!

22

position sense info

= info such as how much muscle is stressed

this info get send into the cerebellum and thru feedback infos, cerebellum adjust muscle movements accordingly

23

pons

looking at "ponds" are relaxing = pons

regulate waking & relaxing

24

basal ganglia

major role of motor functions for proper movement, cognition, emotion

deep inside brain, = a group of subcortical nuclei

25

dopamine

small dopey PARKs the car while tall dopey SKI!!

low level = parkisons's
high level = schizophrenia

26

serotonin

"sex is messy from everywhere down low"

release from lots of nuclei in brain stem to all over brain!!

"sir rotten is in a rotten mood"
low level of serotonin = depression

27

GABA (cns) Glycine (pns)

inhibitory

28

glutamate

most common excitatory NT.

29

endorphin

"running door with fin looking happy"

runner high
block pain

30

limbic system includes:

hippo wearing HAT
- hippocampus
- hypothalamus
- amygdala
- thalamus

regulating emotion!! storage/retrieval of mem, esp if ties to emotion

31

hippocampus key role?

"you need a COMPASS when you cant RECALL how to get home"

forming new mem. convert STM -->LTM

if destroyed cant make new mem = anterograde amnesia

32

anterograde amnesia

cant make new mem! old ones remained

33

hypothalamus funct?

of limbic sys
regulates ANS (fight/flight vs. rest/digest)
endocrine stuff
hunger
sleep
thirst
sex
body temp

(metabolic processes)

"hippo spaying 2 llamas with water to quench thirst and cool them down"