BLOOD SUPPLY TO THE BRAIN

Question 1

The brain trauma unit received a patient with damaged
greater wing of the sphenoid bone. The fracture line crosses
the spinous foramen of the sphenoid. What vessel was
damaged?

A Lateral pterygoid artery
B Superficial temporal artery
C Middle meningeal artery
D Anterior deep temporal artery
E Posterior deep temporal artery

Answer 1

MIDDLE MENINGEAL ARTERY

passes through the spinous foramen

Question 2

A 62-year-old man comes to the clinic complaining of
problems with his vision and a horrible headache that
began earlier in the day. He reports bumping into objects
and not being able to read half the printed page of the
newspaper. He has a history of hypertension and
diabetes mellitus. What is the most likely diagnosis?

A. PCA infarct
B. ACA infarct
C. MCA infarct
D. MMA infarct

Answer 2

PCA (Posterior cerebral artery ) infarct

occlusion of this artery resules in controlateral hemanopia with macular sparing

Question 3

A 61-year-old woman collapsed in the supermarket and was
in a coma when admitted to the emergency department of
the local hospital. Twenty-four hours later, she recovered
consciousness and was found to have paralysis on the left
side of her body, mainly involving the lower limb. There was
also some sensory loss of the left leg and foot. She was able
to swallow normally and did not appear to have difficulty with
her speech.
A. PCA infarct
B. ACA infarct
C. MCA infarct
D. MMA infarct

Answer 3

Anterioir cerebral artery infarct

this artery supplies leg-foot area motor and sensory cortices

Question 4

Sub arachnoid hematoma is due to

Answer 4

Rupture of the berry
aneurysm in the circle of
Willis and its branches

Question 5

Laceration of “briging

veins”

Between the meningeal
dura and arachnoid leads to

Answer 5

subdural hematoma

Question 6

epidural hematoma

Answer 6

-Trauma to the lateral
aspect of the skull
-Laceration of the Middle Meningeal Artery
-Occurs rapidly
-Between periosteal dura
and the skull

Question 7

branch of the ophthalmic artery which when occluded leads to blindness

Answer 7

Central artery of the retina

Question 8

connects internal carotid artery and vertebrobasillary artery (PCA)

artery that irrigates the hypothalmus and thalamus

Answer 8

posterior communivating artery

causes 3rd nerve palsy (occulomotor)

Question 9

most common aneurysm of circle of willis

Answer 9

anterioir communicating artery

Question 10

branch of the ICA which isn’t a part of the circle of willis

Answer 10

anterioir choroidal artery

Question 11

anterioir cerebral artery supplies

Answer 11

medial hemisphere from the frontal to parietoccipital sulcus

Question 12

the. paracentral lobule which has the leg-foot area of the motor & sensory cortices is supplied by

Answer 12

anterior cerebral artery

Question 13

meaning of bitemporal lower quadrantanopia

Answer 13

you have a loss of vision in one quarter (one-fourth) of your visual field.

Question 14

most common site of aneurysm of the circle of willis which may cause bitemporal lower quadrantanopia

Answer 14

anterior communicating artery

Question 15

second most common site of aneurysm of the circle of willis

Answer 15

posterioir communicating artery

Question 16

penetrating arteries of ACA
penetrating branches of MCA

Answer 16

medial striate artery
lateral striate arteries (stroke artery)

Question 17

lateral hemisphere is supplied by

includes broca’a and wernickes area, frontal eye lid, face and arm (sensory & motor cortices)

Answer 17

Middle cerebral artery

Question 18

vertebral artery branches off

Answer 18

subclavian artery

Question 19

Vertebral A. gives rise to

Answer 19

anterior spinal A. and Posterioir inferior cerebellar artery

supplies dorsolateral quadrant of the medulla( inferioir cerebellum & CN IX, X, XI

Question 20

BRANCHES OF THE basillar artery

Answer 20

Anterioir inferoir cerebellar A
Labyrinth A.
pontine A (supplies lower pons)
posterioir cerebral
superioir cerebellar A (supplies rostral pons )

Question 21

major blood supply to the midbrain & also to occipital lobe + inf. temporal lobe & PRIMARY VISUAL CORTEX

Answer 21

posterioir cerebral A.

Question 22

controlateral hemanopia with macular sparing means

Answer 22

a clinical term used to describe the loss of one half of a vertical visual field

Question 23

occlusion of what artery causes controlateral hemanopia

Answer 23

posterior cerebral artery

Question 24

medulla is supplied by

Answer 24

anterior + posterioir spinal artery

Question 25

medial structures of medulla: medial longitudinal fasciculus, medial lemniscus, are supplied by

Answer 25

anterior spinal artery

Question 26

caudal medulla: fascilculus gracilis,cuneatus is supplied by

Answer 26

post. spinal A

Question 27

ANTERIOIR 2/3RD od spinal cord is supplied by

Answer 27

anterioir spinal artery