blood supply, meninges, and ventricular system

Question 1

what do the vertebral arteries supply blood to? where does it branch from?

Answer 1

R and L branch from subclavian artery
supplies anterior medulla oblongata

Question 2

what does PICA supply

Answer 2

inferior part of posterior lobe of cerebellum

Question 3

what does AICA supply

Answer 3

inferolateral posterior lobe of cerebellum

Question 4

what does SCA supply

Answer 4

anterior lobe and superior posterior lobe of cerebellum

Question 5

what is the first branch of the internal carotid artery

Answer 5

opthalmic artery

Question 6

what does ACA supply

Answer 6

medial frontal and parietal lobe, limbic lobe, lateral superior frontal and parietal lobe

Question 7

what functions would be impaired with an ACA stroke

Answer 7

contralateral lower limb somatic motor and sensation, emotions

Question 8

where does aca and mca branch from

Answer 8

internal carotid artery

Question 9

what does MCA supply

Answer 9

supralateral frontal anf parietal lobe, temporal lobe

Question 10

what functions would be impaired with a MCA stroke

Answer 10

contralateral trunk, upper limb, and face somatic motor and sensation
hearing
language if L MCA (aphasia)
spacial cognition and emotion if R MCA

Question 11

what does the PCA supply

Answer 11

inferior temporal and occipital lobe

Question 12

what functions would be impaired with a PCA stroke

Answer 12

memory and contralateral visual field

Question 13

arteries that form the circle of willis

Answer 13

anterior communicating (1)
antereal cerebral artery (2)
internal carotid (2)
posterior communicating artery (2)
Posterior cerebellar artery (2)

Question 14

what structure are inside the circle of willis

Answer 14

hypothalamus and pituitary gland

Question 15

what is the basal nuclei supplied by

Answer 15

lateral striate a. (branch form MCA)

Question 16

hemorrhagic and ischemic stroke

Answer 16

hemorrhagic- disruption of blood vessels (13%)
ischemic- blockage of blood supply (87%)

Question 17

the folding of the meningeal layer of the dura mater in the SAGITTAL plane creates what

Answer 17

falx cerebri: longitudinal fissure
falc cerebelli: posterior cerebellum

Question 18

the folding of the meningeal layer of the dura matter in the TRANSVERSE plane creates what

Answer 18

tentorium cerebelli: transverse fissure
diaphragma sellae: pituiratry gland

Question 19

which sinuses run between the periosteal and meningeal dura mater

Answer 19

superior sagittal sinus, occipital sinus, transverse sinus, sigmoid sinus

Question 20

which sinuses are in the folded meningeal dura mater

Answer 20

inferior sagittal sinus, straight sinus

Question 21

what is the pathway of venous drainage

Answer 21

deep brain vein
great cerebral vein and inferior sagittal sinus
straight sinus
occipital sinus and superior sagittal sinus
confluence of sinus
transverse sinus
sigmoid sinus
cavernous sinus
internal jugular vein

Question 22

what is known as the dangerous triangle? why?

Answer 22

cavernous sinus- emissary veins
it can spread infection from CSF to the brain

Question 23

where is the interventricular foramen (foramen of monro)

Answer 23

3rd ventricle

Question 24

where is the cerebral aqueduct

Answer 24

4th ventricle

Question 25

circulation of CSF

Answer 25

lateral ventricles
3rd ventricle
4th ventricle
out of the ventricular system
reabsorbed into venous sinus blood

Question 26

injury to the meningeal artery (pterion), bleeding, convex on ct scan, loss of consciousness

Answer 26

epidural hematoma

Question 27

disruption of bridging veins, concave on CT scan, herniation of brain structures

Answer 27

subdural hematoma

Question 28

disruption of blood vessels, hematoma in CSF, diffusion on CT scan, increased intracranial pressure

Answer 28

subarachnoid hematoma