Test 75    (Ocular anatomy)
1. The lacrimal gland:
a. is a S-shaped structure
b. is completely covered by orbital fat
c. has a orbital part which is larger than the palpebral part
d. is visible when the upper lid is everted
e. receives sympathetic supply from the greater petrosal 

2. The following are true about the superior oblique muscle:

a. it is supplied by the fourth cranial nerve on its upper 
b. it arises from the frontal bone superomedial to the 
    optic canal
c. it depresses the globe in adduction
d. it extorts the globe in the primary position
e. its paralysis causes hypodeviation

3. The cornea:

a. has a greater diameter horizontally than vertically
b. is more curved vertically than horizontally
c. is more peripherally than centrally
d. has a refractive index of 1.36
e. has a greater radius of curvature anteriorly than 

4. The following are true about the canaliculus:

a. it contains a shorter vertical portion and a longer 
    horizontal portion
b. the upper canaliculus is longer than the lower 
c. the upper canaliculus has a greater lumen than the 
    lower canaliculus
d. it is lined by columnar cells
e. the common canaliculus pierces the lacrimal sac 
    about 4 mm below the apex

5. The inferior oblique muscle:

a. arises from sphenoid
b. extorts the globe
c. receives blood supply from the ophthalmic and 
    infraorbital arteries
d. passes anterolaterally beneath the inferior rectus to its 
e. attaches to the sclera about 2 mm from the fovea

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