Questions

Question 1

What structures arise from vertebral arteries?

Answer 1

Superior cerebellar artery
Anterior cerebellar artery

Posterior cerebral artery

Question 2

What structures arise basilar artery?

Answer 2

Anterior spinal artery
Posterior spinal artery

Posterior cerebellar artery

Question 3

What vessel supplies
medulla, upper spinal cord?

Answer 3

Vertebral

Question 4

What vessel supplies
pons, cerebellum, midbrain

Answer 4

Basilar

Question 5

What structure produces CSF?
Where in brain located?
Outline path?

Answer 5

CSF produced by choroid plexus
Located lateral ventricle, 3rd and 4th ventricles

CSF from lateral ventricles
Foramen munroe (interventricular foramen)
Third ventricle
Cerebral aqueduct
Fourth ventricle
Drain out foramen Luschka and Magendie
Subarachnoid space

Question 6

How CSF reabsorbed?

Answer 6

Arachnoid villi
Collective- arachnoid granulations

Question 7

External to internal state meningeal layers?

Answer 7

Dura
Arachnoid
Pia

DAP

Question 8

Where is hippocampus and amygdala located?

Answer 8

Temporal lobe

Question 9

Where is primary motor cortex located?
Where is somatosensory cortex located?

Answer 9

Primary motor cortex- Frontal lob precentral
Somatosensory cortex- Parietal lobe postcentral

Question 10

Where is primary visual cortex located?

Answer 10

Occipital lobe

Question 11

Where is primary auditory cortex located?

Answer 11

Temporal lobe

Question 12

Where is wernicks area located?
Where is brocas area located?

Answer 12

Wernicke- Parietal
Broca- Frontal

Question 13

Blood supply to arm and auditory area?

Answer 13

Middle cerebral

Question 14

Blood supply to brocas?

Answer 14

Left middle cerebral

Question 15

What is arrow pointing to?

Answer 15

Superior saggital sinus

Question 16

Answer 16

Middle cerebral artery

Question 17

Where does ICA enter skull cranium?

Answer 17

Enter skull- Carotid canal
Enter cranium- foramen lacerum

Question 18

Where does optic nerve enter? Bone?

Answer 18

Optic canal- lesser wing sphenoid bone

Question 19

Where does facial nerve exit? Bone?

Answer 19

IAM in petrous part temporal bone

Question 20

Where does spinal cord enter? Bone?

Answer 20

Foramen magnum
Occipital bone

Question 21

Oculomotor enter?

Answer 21

Superior orbital fissure
Greater and lesser wing sphenoid

Question 22

Where visual cortex located?
What artery supply visual cortex?

Answer 22

Visual cortex located occipital lobe brain
Supplies posterior cerebral artery

Question 23

What nerve controls eye muscles?

Answer 23

Mainly oculomotor (eyelids and size)
Except S04 LR6

Question 24

What occurs if occulomotor damaged to eye postition?

Answer 24

Eye forced down and out
Only S04 LR6 work

Question 25

Draw 6 extraocular and state movement?

Answer 25

● Medial rectus: adduction
● Lateral rectus: abduction
● Superior rectus: elevation
● Inferior rectus: depression
● Superior oblique: adduction and depression
● Inferior oblique: adduction and elevation

Question 26

State list from tympanic membrane to oval window?

Answer 26

Tympanic membrane, malleus, incus, stapes, oval window

Question 27

Answer 27

Question 28

What cranial nerves would mass cavernous sinus effect?

Answer 28

Trochlear
Abducens
Trigeminal
Occulomotor

Question 29

You examine a patient who on visual field testing has a right lower homonymous quadrantanopia. Where is the lesion?

Answer 29

Left parietal – the fibres of the lower quadrants go through Baum’s loop
As the left side of the eye goes to the left side of the brain, it must be left parietal

Question 30

Where do the majority of the descending fibres of the corticospinal tract decussate?

Answer 30

80% of the corticospinal tract decussate in the medullary pyramids and travel in the lateral corticospinal tract.
10% join the ipsilateral lateral corticospinal tract
10% travel in the anterior corticospinal tract and cross in the spinal cord

Question 31

Where is location of olfactory, optic?

Answer 31

Olfactory bulb
Lateral geniculate body

Question 32

If vestibulocochlear compressed what other CN risk?

Answer 32

Facial