Physiology Flashcards

1
Q

where is CSF produced?

A

choroid pexus of the lateral ventricles

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2
Q

where is CSF absorbed?

A

venous circulation

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3
Q

what does CSF supply and what does it remove?

A

supplies water, amino acids and ions

removes metabolites

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4
Q

what are the functions of CSF?

A

mechanical protection

homestatic function

circulation- exchange of nutrients

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5
Q

at what vertebral level is a LP performed?

A

L3-5

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6
Q

secretion in CSF dependant on active/passive Na+ transport

A

active

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7
Q

intraventricular foramen of munroe connects which ventricles?

A

lateral to 3rd

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8
Q

what connects the 3rd to 4th ventricle?

A

cerebral aqueduct of sylvius

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9
Q

the medial and lateral apertures connect which ventricles?

A

4th to subarachnoid space

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10
Q

what are the medial and lateral apertures also known as?

A

foramen of Magendie

foramen of Luschka

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11
Q

what patholgy is common at the interventricular septum?

A

colloid cyst

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12
Q

the ventricles are lined by what cells?

A

ependymal cells

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13
Q

define epidural haematoma

A

arterial bleed between skull and dura mater

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14
Q

define subdural haematoma

A

venous bleed between dura and arachnoid

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15
Q

define hydrocephalus

A

accumulation of CSF

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16
Q

what is papilloedema?

A

otic disc sweeling due to rasied ICP

17
Q

what drugs can be used to reduce the production of aqeuous?

A

carbonic anyhydrase inhibitors

18
Q

descrieb the flow of aqeuous humour?

A

posterior chamber

anterior chamber

trabecular meshwork

canal of schlemm

19
Q

give an example of a carbonic anhydrase inhibitor

A

acetazolamide

20
Q

what doesnt have a BBB?

A

circumventricular organs and pineal gland

21
Q

what are arachnoid granulations?

A

projections of arachnoid mater allowing CSF to drain into venous sinuses