Cranial Nerves - Midbrain

Question 1

Cranial Nerve 1

Answer 1

Olfactory

Question 2

Anosmia etiology

Answer 2

Respiratory Tract Infection Meningioma Trauma Kallman Syndrome

Question 3

Kallman Syndrome Features

Answer 3

Hypogonadotrophic hypogonadism micropenis, cryptorchidism Lack of secondary sex. characteristics inc in females 1.Renal agenesis 2.Cleft lip/palate 3.Oculomotor palsy 4.Deafness 5.Bimanual synkinesis (mirror movements of other hand)

Question 4

Cranial Nerve 2

Answer 4

Optic Nerve

Question 5

Optic Nerve Location

Answer 5

Cortex

Question 6

Right Homonymous Hemianopia

Answer 6

Left Occipital Lesion

Question 7

Left Superior Quadrantonopia

Answer 7

Right Temporal Lesion

Question 8

Right Inferior Quadrantonopia

Answer 8

Left Parietal Lesion

Look for hemiparesis and aphasia

Question 9

Left Inferior Quadrantonopia

Answer 9

Right parietal lesion, often non - dominant

Look for

Left Right Disorientation

Agraphia

Acalculia

Finger agnosia

Question 10

http://C:\Users\Ibtissam\Videos\Any Video Converter\iPhone

Answer 10

Left Superior Quadrantonopia

Question 11

Cranial Nerve 3

Answer 11

Oculomotor

Question 12

Answer 12

Right oculomotor nerve palsy

Question 13

Causes of third nerve palsy

Answer 13

Pupil sparing

Vasculopathic DM HTN

Chronic meningitis

Pupil affected

PCOM aneurysm

Cavernous sinus thrombosis

Tumor

Question 14

Cranial Nerve 4

Answer 14

Trochlear

Question 15

Answer 15

Right trochlear lesion with hypertropia worsened on leftward gaze

Question 16

Causes of 4th Nerve Palsy

Answer 16

Congenital with head tilt

Vasculopathic

Trauma