Neuro formative 2

Question 1

What is wrong with this statement…?
Cranial nerve I has both afferent and efferent components

Answer 1

Only has afferent

Question 2

What is wrong with this statement…?
The olfactory nerve if damaged will result on anosmia on the contralateral side

Answer 2

Result in anosmia in the ipsilateral side

Question 3

What is wrong with this statement…?
The olfactory nerve is commonly damaged in fractures to the posterior cranial fossa

Answer 3

Anterior not posterior fossa

Question 4

What is wrong with this statement…?
Patients who have sustained damage to the olfactory nerve may complain of loss of sensation in their nasal septum

Answer 4

Nasal sensation via trigeminal nerve (opthalmic)

Question 5

Which statement is most correct concerning the olfactory nerve? CN1
Has both afferent and efferent components
If damaged, will result in anosmia on the contralateral side
Enters the cranial cavity via small holes in the cribriform plate of the ethmoid bone
Is commonly damaged in fractures to the posterior cranial fossa
Patients who have sustained damage to this nerve may complain of loss of sensation in their nasal septum

Answer 5

Enters the cranial cavity via small holes in the cribriform plate of the ethmoid bone

Question 6

What is wrong with this statement…?
The optic nerve enters the skull via the superior orbital fissure

Answer 6

Enters via optic canal

Question 7

What is wrong with this statement…?
The optic nerve first joins the opposite cranial nerve at the optic radiation

Answer 7

Optic chiasm, not radiation

Question 8

What is wrong with this statement…?
The optic nerve fibres are closely related to the medial geniculate body

Answer 8

Closely associated with the LATERAL geniculate nucleus

Question 9

What is wrong with this statement…?
A lesion affecting the left optic tract will result in total blindness in the left eye

Answer 9

Lesion affecting the left nerve results in total blindness in the left eye

Question 10

qs2

Question 11

What is wrong with this statement…?
CNs III, IV, VI all take a course which runs through the inferior petrosal sinus

Answer 11

They all take a course through the cavernous sinus (+V1, V2 and carotid)

Question 12

What is wrong with this statement…?
Damage of CN III will lead to ptosis of the eyelid on the opposite side

Answer 12

Will lead to damage on the same side