Meninges & Vasculature

Question 1

Name the layers of the SCALP

Answer 1

Skin, Connective tissue, Aponeurosis of occipitofrontalis m., Loose connective tissue, Pericranium

Question 2

Meninges from superficial to deep.

Answer 2

Dura mater, arachnoid, and pia mater

Question 3

True or False: Dura mater has two layers.

Answer 3

T- brain= periosteal and meningeal layer

F- spinal cord= no periosteal layer here

Question 4

Name dural folds.

Answer 4

Falx cereri= middle of 2 hemispheres
Falx cerebelli= btw. 2 cerebellar hemispheres
Tentorium cerebelli= btw cerebellum & occipital lobe
Diaphragma sellae= over hypophyseal fossa

Question 5

Site where dural sinuses come together.

Answer 5

Confluence of sinuses

Question 6

Transverse sinus drains into…

Answer 6

Sigmoid sinus, which then goes to internal jugular vein

Question 7

Inferior sagittal sinus drains into…

Answer 7

Straight sinus, then goes to confluence

Question 8

Location of cavernous sinus.

Answer 8

On either side of pituitary gland

Question 9

Sub arachnoid space is real or potential.

Answer 9

Real- contains CSF

Question 10

What allows CSF to pass from subarachnoid space to venous system?

Answer 10

Arachnoid villi, which make impressions on skull= granular fovealae

Question 11

Where does the spinal cord end?

Answer 11

L1 or L2

Question 12

Cauda equina is…

Answer 12

loose spinal nerves after spinal cord ends

Question 13

Epidural space is _____ in brain and ____ in spinal cord.

Answer 13

Potential, real

Question 14

Subdural space is ___ in brain and ____ in spinal cord.

Answer 14

Potential, potential

Question 15

Subarachnoid is ____ in brain and ___ in spinal cord.

Answer 15

Real, Real

Question 16

Epidural hematoma is caused by ______ and is usually in the shape of _____

Answer 16

Rupture of middle meningeal artery

Lemon/ball

Question 17

Subdural hematoma is caused by _____ and is usually in the shape of ______

Answer 17

Rupture of bridging veins

Banana

Question 18

Largest of the ventricles is the _______ ventricle

Answer 18

Lateral

Question 19

What connects the lateral ventricle to the third ventricle?

Answer 19

Interventricular foramen

Question 20

What connects the 3rd ventricle to the 4th?

Answer 20

Cerebral aqueduct

Question 21

Cerebrospinal fluid is made by what cells?

Answer 21

Ependymal cells, in the CNS

Question 22

Flow of CSF

Answer 22

Lateral to 3rd to 4th to cisterna magna then to subarachnoid space and central canal

Question 23

Where would you do a spinal tap?

Answer 23

Btw L3 and L4

Question 24

How would the CSF look if there was a bacterial infection?

Answer 24

Cloudy and with decreased glucose levels

Question 25

Where do all the bones meet up in the skull and is right over the middle meningeal a.?

Answer 25

Pterion

Question 26

Where does the middle meningeal a. originate from?

Answer 26

Maxillary a., which comes from external carotid a.

Question 27

What artery goes through the cavernous sinus?

Answer 27

Internal carotid a.

Question 28

What makes up the circle of Wills?

Answer 28

Internal carotid a., Vetebral aa., and middle cerebral a.