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MD4001 Anatomy > Meninges > Flashcards

Flashcards in Meninges Deck (14)
1

describe the dura

attached to the skull
bridges crevices

2

describe the arachnoid mater

delicate, sealed bag for CSF, bridges crevices
contains arachnoid trabeculae which travel across the subarachnoid space

3

describe the pia

dips into crevices

4

what are cisterns

spaces filled with CSF

5

Name the cisterns

superior cistern, interpenduncular cistern, cisterna pontis, cisterna magna (cerebellomedularis)

6

what type of meninges make up the denticulate ligaments in the spinal cord

pia

7

describe brain veins

thin wall and no valves
lie in the subarachnoid space
drain into cranial venous sinuses
grouped into external and internal cerebral

8

what are dural venous sinuses

venous channels found between layers of dura mater, allowing blood to drain to the confluence of sinuses

9

describe blood drainage to the confluence of sinuses

blood flows from the superior sagital sinus, straight sinus and occipital sinus into the confluence of sinuses

it then drains to the transverse sinus and sigmoid sinus and ultimately to the internal jugular

10

what is the tentorial notch

part of the tentorium cerebelli which the brainstem travels through

11

how many times a day does CSF replace itself

4

12

where is the intraventricular foramen

inbetween the lateral and third

13

how is CSF made

formed in the choroid plexus
epithelium secretes cerebral spinal fluid

made in all ventricles

CSF flows out of ventricles into subarachnoid space via apertures in the fourth ventricle

14

what are the two types of hydrocephalus

non communicative (blocked tranport)

communicative (blocked absorption or over production)