head anatomy

Question 1

bones around pterion

Answer 1

temporal, parietal, sphenoid (greater wing), frontal

Question 2

anterior fontanelle

Answer 2

18 mnths

Question 3

posterior fontanelle

Answer 3

2-3 mnths

Question 4

sphenoidal fontanelle

Answer 4

2-3 mnths

Question 5

mastoid fontanelle

Answer 5

6-18 mnths

Question 6

foramen caecum

Answer 6

nasal emissary vein

Question 7

olfactory foramina in cribiform plate

Answer 7

olfactory nerve

Question 8

optic canal

Answer 8

optic nerve

ophthalmic artery

Question 9

superior orbital fissue

Answer 9

CN3,4,6, V1, opthlmic veins

Oculomotor
Trochlear
Abducent nerve
ophthalmic division of 
trigeminal

Question 10

formaen rotundem

Answer 10

V2

Question 11

foramen ovale

Answer 11

V3, lesser petrosal

Question 12

foramen spinosum

Answer 12

middle meningeal artery

Question 13

foramen lacerum

Answer 13

Nothing

Just Greater petrosal nerve and other vessels passing superiorly across it

Question 14

internal acoustic meatus

Answer 14

CN7, 8, labyrinthe artery

facial nerve
vestibulocochlear nerve

Question 15

jugular foramen

Answer 15

CN9, 10, 11, internal jugular vein, sigmoid sinus

Question 16

Hypoglossal canal (near the foramen magnum)

Answer 16

CN 12

Question 17

stuff inside cavernous sinus

Answer 17

maxillary
ophthalmic
abducens
internal carotid artery
trochlear
occulomotor

Question 18

epidural haemorrhage

Answer 18

blood bw skull and dura mater

causes: blow to side of head, trauma
signs: unconscious then conscious then unconcious

paths-tearing of arteries in that space e.g. middle meningeal

Question 19

subdural haemorrhage:

Answer 19

blood bw dura and arachnoid

patho- tearing of bridging veins

causes: car accidents, moving then stopping. old ppl, alchoholics, shearing forces
signs: headache that gets worse,intellectual slowing, unsteadiness, drowsiness

Question 20

subarachnoid haemorrhage

Answer 20

blood in subarachnoid space

from tearing of arteries in there

thunderclap headache, being kicked int the back of head,stiffness in neck, vomiting

medical emergency

cerebral aneurysm

Question 21

meningitis

Answer 21

fever, headache, neck stiffeness

Question 22

CSF circulaion

Answer 22

1. Made by choroid plexus in lateral ventricles
2. Goes through interventricular foramina
3. Into 3rd ventricle, where choroid plexus adds more CSF
4. Thorugh cerebral aqueduct
5. Into 4th ventricle, where choroid plexus adds more CSF
6. Out through median and lateral apertures
7. Into subarachnoid space
8. Drains into dural venous sinuses through the arachnoid villi

Question 23

internal carotid artery

Answer 23

sympa and venous plexus wrap around it

• Branches are the anterior and middle cerebral arteries

Question 24

wat drains into cavernous sinus?

Answer 24

superior and inferior ophthalmic viens

superficial middle cerebral vein