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CNS > Anatomy > Flashcards

Anatomy Flashcards

1
Q

What forms the olives?

A

Inferior olivary nuclei

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2
Q

Where does trigeminal lemaniscus ends ?

A

Ventral posteromedial nucleus of T

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3
Q

Sensory root of facial is between ?

A

It’s motor root and vestibulocochlear

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4
Q

Which is medial gracille or cuneatus?

A

Gracille

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5
Q

How does the corticospinal fibers decussate in direction?

A

Backwards and laterally

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6
Q

What provides attachments to eyeball muscles?

A

Sclera

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7
Q

What nourish the cornea ?

A

Peripheral capillary bed
Aqueous humor
Tears
Oxygen from air

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8
Q

Layers of cornea

A

Stratified squamous non keratinised epithelium
Bowmans membrane
Corneal stroma rich in collagen and fibroblasts

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9
Q

Afferent and efferent of corneal reflex

A

Nasociliarly of ophthalmic division of trigeminal

Facial to orbucluris oculi

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10
Q

Subconjuctival hemorrhage results from?

A

Rupture of small subconjuctival capillaries

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11
Q

What supplies the choroid?

A

Six short posterior ciliary arteries and 2 long posterior

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12
Q

What controls the light input to retina?

A

The iris by radial dilators and peripheral sphinters

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13
Q

Parasympathetic effect on iris?

A

Contracts the sphincter pupilla allowing less light through

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14
Q

What can change the convecity of lens?

A

Ciliary body supplied by parasympathetic of ovulomotor

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15
Q

Canal of schlemn is located at

A

junction of cornea and iris

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16
Q

Ciliary and iridial part of retina are anterior continuations of?

A

Pigmented layer of optic retina

17
Q

RPE cuboidal layer rich in

A

Melanin

18
Q

What forms the retinal blood barrier?

A

RPE and bruch membrane

19
Q

Embolous to which artery causes total blindness and why?

A

Central artery

End artery

20
Q

What anchor the lens to the ciliary body?

A

Zonular fibers

21
Q

Rupture of which artery causes pulsating exophthalmos

A

ICA in cavernous sinus

22
Q

Aneurysm of ICA can compress what and cause what ?

A

Optic. Hiasm

Causing uni/bilateral nasal heminanopoa

23
Q

Lateral medullary syndrome caused by which vessel?

A

PICA from vertebral 👏🏼👏🏼

24
Q

Magnocellular neurons relations to posterior pituitary ?

A

Found inf paraventricular nuclei and supraoptic send axons directly to posterior pituitary to release ADH and oxytocin

25
Q

Kluver bucy syndrome which shows loss of fear loss of ability to learn
Usual agnosia related to?

A

Limbic system

26
Q

Amygdala mostly related to ?

A

Fear

27
Q

Components of fear production include?

A

Lateral hypothalamus

Paraventricular controls release of stress hormone

28
Q

Why increase in oral activity in kluver bucy syndrome?

A

Loss of visual association area

29
Q

Hippocampus formation is an expansion of which lobe?

A

Medial temporal lobe

30
Q

Loops between neurons in hippocampus form ?

A

Schaffer collateral and mossy fibers

CNS (5 decks)

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