Anatomy - Brain

Question 1

Name the 12 cranial nerves.
Identify them on onenote
State whether they are motor, sensory or both

Answer 1

I - olfactory - sensory 
II - optic - sensory
III - occulomotor - motor
IV - trochelar - motor
V - trigmenlar - both
VI - abducens - motor
VII - facial - both
VIII - vestibulocochlear - sensory
IX - glossopharyneal - both
X - vagus - both
XI - spinal accessory - motor 
XII - hypoglossal - motor

Look at onenote for mnemonics and positions - DO IT

Question 2

What nerve crosses over in the optic chiasma?

Answer 2

CN II - optic nerve

Question 3

There are three fossa in the skull. Name them and state what lobe of the brain sits in each

Answer 3

Anterior cranial fossa - frontal lobe
Middle cranial fossa - temporal lobes
Posterior cranial fossa - cerebellum (with occipital lobe above)

Question 4

Name the 3 branches of the trigeminal nerve (V) nerve and state where they exit the cranium
(remember the mnemonic)

Answer 4

CNV1 = ophthalmic 
CNV2 = maxillary 
CNV3 = mandibular 

Standing Room Only
V1 = superior orbital fissure
V2 = foramen rotundum
V3 = foramen ovale

Question 5

Describe the sensory and motor innervation of the facial nerve

Answer 5

Sensory - small part of external ear

Motor - facial expression + stylohyoid

Question 6

Damage to the facial nerve can cause a wide variety of symptoms because it innervates many muscles. It can cause the face to hold strange positions, if this occurs and no known cause can be found. What is the name of it?

Answer 6

Bell’s palsy