Orbit

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Orbit

General anatomy

1. Which of the following is the weakest part of orbit

1 point

a. Medial wall

b. Lateral wall

c. Floor of orbit

d. Roof of orbit

Clear selection

2. Which structure pass through inferior orbital fissure

1 point

a. Superior ophthalmic vein

b. Ophthalmic artery

c. Trochlear nerve

d. Zygomatic nerve

Clear selection

3. Nasolacrimal duct is directed

1 point

a. Downward, medially, backwards

b. Downward, laterally, backwards (DLB)

c. Downward, laterally, forwards

d. Downward, medially, forwards

Clear selection

4. Lacrimal gland is supplied by which of the following ganglion

1 point

a. Otic

b. Ciliary

c. Sphenopalatine

d. Submandibular

Clear selection

5. Nasolacrimal duct opens into

1 point

a. Superior meatus

b. Middle meatus

c. Inferior meatus

d. None of the above

Clear selection

7. Ptosis may occur due to

1 point

a. Trochlear nerve

b. Occulomotor nerve

c. Trigeminal nerve

d. Superior oblique muscle

Clear selection

8. Occulomotor supplies all the muscles of eye except

1 point

a. Lateral rectus

b. Superior oblique

c. Superior rectus

d. A and B both

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9. All of the following are true about upper eyelid except

1 point

a. Muscles which close the eyelid are supplied by facial nerve

b. Muscles which open the eyelid are supplied by trigeminal nerve

c. Sensory supply is by the Vth cranial nerve

d. Blood supply is by the lacrimal and ophthalmic arteries.

Clear selection

10. Which of the following is not a branch of ophthalmic nerve

1 point

a. Frontal

b. Lacrimal

c. Nasociliary

d. Medial ethmoid

Clear selection

11. Cliliary ganglion is located

1 point

a. Between optic nerve and lateral rectus

b. Apex of orbit

c. Between apex of orbit and superior rectus

d. Apex of orbit between optic nerve and lateral rectus

Clear selection

12. Abduction of eyeball is by the action of

1 point

a. Lateral rectus, superior oblique and inferior oblique

b. Medial rectus, superior rectus and inferior rectus

c. Superior oblique and superior rectus

d. Inferior oblique and inferior rectus

Clear selection

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