Test 4 part 1 FRCOphth/FRCS

Test 4

1. Which of the following is the TRUE statement about the

     parasympathetic fibres in the oculomotor nerve:

a. they supply the lacrimal gland

b. they are more fibres innervating the ciliary than the pupil

c. they run centrally in the main oculomotor nerve

d. they run in both the superior and the inferior division of the

    oculomotor nerve

e. they run centrally in the inferior division of the oculomotor nerve

..

2. The following nerves travel through the wall of the cavernous

     sinus at the level of the pituitary fossa:

a. 3^rd, 4^th, 5^th and 6^th cranial nerves.

b. 3^rd, 4^th and 5^th cranial nerves

c. 3^rd and 4^th cranial nerves

d. 4^th, 5^th and 6^th cranial nerves

e. 6^th cranial nerve.

..

3. Which of the following statements about the optic chiasm

     is false:

a. compression of the optic chiasm by an expanding pituitary lesion

   begins with superior bitemporal hemianopia.

b. 53% of the retinal fibres cross at the optic chiasm.

c. the bulk of the optic chiasm is made up of the macular fibres.

d. the majority of macular fibres decussate in the central chiasm.

e. the inferior nasal fibres cross in the anterior chiasm.

4. The optic canal is located at the:

a. maxillary bone

b. palatine bone

c. frontal bone

d. lesser wing of the sphenoid bone

e. greater wing of the sphenoid bone

5. The lacrimal sac fossa is made up of:

a. lacrimal bone only.

b. palatine bone and lacrimal bone.

c. maxillary bone and lacrimal bone.

d. ethmoid bone and lacrimal bone.

e. frontal bone and lacrimal bone.