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VSCI200 NSF > export_cnslp lectures (1) > Flashcards

export_cnslp lectures (1) Flashcards

1
Q

Name the 3 hypothalamic regions

A
  1. CD = Mammillary
  2. Intermediate = tuberal
  3. R = chiasmatic

Supraopt & Preoptic

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2
Q

What is the purpose of the CD hypothal group?

A

mamm bodies

smell

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3
Q

what is the fct of the intermediate group?

A

connect post pit gland to infundibulum.

VMH, DMH, ARC, LHA

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4
Q

What is the fct of the supraoptic nuc?

A

PVN & SON go to post pit gland, AHN and SCN

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5
Q

what is the fct of the preoprtic?

A

part of the hypothalamus

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6
Q

What nuclei control GI stim

A

dorsomed nuc

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7
Q

Where in the hypo is hunger and satiety controlled?

A

hunger - lateral hypo area

satiety - ventromed

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8
Q

What is the paraventricular nucleus responsible for?

A

Oxytocin release and water conservation

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9
Q

What is the supraoptic chiasmic nuc job?

A

ADH release

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10
Q

how do hypothalamic hormones arrive at pit gland

A
  • ANT pit = n-horm into cap (1) then pituitary hormones released into cap (2) = portal venous system
  • POST pit = n-horm into cap
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11
Q

what hormones are prod by the ant pit?

A

FLAT PiG

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12
Q

what is the role of the mamillary bodies?

A

smell and feeding

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13
Q

what is themain role of the nuclei in the tuberal/intermediate region of the hypothal?

A

feeding

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14
Q

where is temperature regulation in thehypo?

A

supraoptic chiasmic area, in AHN

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15
Q

what area controls cardiac fct?

A

preoptic chiasmic

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16
Q

what is the periventricular nuclei role?

A

fear, reward…

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17
Q

what is the purpose of the limbic system?

A

homeostasis
motivation

emotion

(inc olfaction)

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18
Q

What are the main componants of the limbic system?

A

hippocampus; hypothal; amygdala; basal ganglia; anterior thalamic nuc and paraolfactory

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19
Q

what is the reticular formation?

A

sensory info being recieved prevents sleep. RF in brainstem by pons and projects into cerebral cortex

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20
Q

if the LHA (later hypoth area) is lesioned, what happens?

A

stupor and cataplezy

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21
Q

where is orexin produced?

A

LHA

22
Q

what is orexin?

A

causes arousal and waking. R found extensivley.

23
Q

what are the 2 pos causes of narcolepsy?

A 
orexin R abnormality (LAB)
abnormal orexin (dobies)
24
Q

Appeitie sensors inhibit satiety, T or F?

A

F

25
Q

what is the glucostat theory?

A

that hunger depends on blood glucose. eg hunger = high, then bglucose will be low

26
Q

what is the lipostat theory of appetite?

A

fat produces leptin which has R in brain. HIgh leptin = high fat = fat needs to decrease

27
Q

Does leptin stimulate neurones which inhibit or stim feeding?

A

Inhibits

28
Q

Eating i sassoc with dopamine release. Why does obesity lead to desensitisation?

A

Inc Dopam release, causes decreased number of receptors

29
Q

NAme the 3 lobes of the cerebellum

A

Rost
Cd

(both = motor control)

Flocculonodular (balance)

30
Q

What is the main purpose of the cerebllum?

A

refine movement
balance

coord

31
Q

what are the pyramindal tracts involved in?

A

skilled
learned

vol

32
Q

what are the extra-pyramidal tracts involved in?

A

invol
antigravity

posture

33
Q

hw does the cerebellum act to amend improper movenment

A

fback to red nucleus (EP tract)
thalamus

LMN

–> not as efficient with rapid movement (practice)

34
Q

What is the cerebellum, pyramida and extrapyramidal tracts part of?

A

UMN groups

35
Q

Perkinje axons, in the arbor vitae synapse where?

A

deep cerebellar nuc in deep grey matter

36
Q

what do the cerebellar peduncles do?

A

Cd - afferent –> cerebellum (vestib, proprioceptors)
Mid - UMN from cerebr cortex –> cerebellum

Cr - Efferent from cerebell –> red nuclei and thalamus

37
Q

what is learning?

A

change in behaviour –> reward or avoidance

38
Q

what are the 2 forms of memory

A

declarative

procedural

39
Q

where is STM help?

A

hippcampus

40
Q

where is LTM help?

A

cerebral cortex

41
Q

where is working memory held?

A

prefrontal cortex

42
Q

whatis cognition?

A

ability to think and plan and make behavioural changes

43
Q

why is aggression seen in CDS?

A

imbalance of 5HT and ACh

44
Q

what are the 3 main neuro-biological causes of Alzeimers?

A
  1. brain atrophy
  2. B-amyloid plaques
  3. N-fibrillary tangles
45
Q

describe the process of neurogenesis

A
  • ventricular zone (stem cells)
  • cell bodies –> grey matter
  • axons –> white matter of marginal zone
  • diffferentiate
46
Q

what stimulates n-genesis?

A

enrichment brain activity

47
Q

where is balance control based in cerebellum?

A

flocculonodular lobe

48
Q

what is NPY

A

appetite stim, LHA mainly

49
Q

what is melanocortin

A

appetite suppressant

50
Q

what is adiponectin?

A

released by fat cells in skinny animals to stim feeding

51
Q

where are leptin R ?

A

arc nucleus

VSCI200 NSF (25 decks)

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