Netter's MCQs Chapter 19: Eye & Orbit

Question 1

The optic nerve passes through which opening in the orbit?

a: optic foramen
b: nasolacrimal canal
c: inferior orbital fissure
d: superior orbital fissure

Answer 1

a: optic foramen

Question 2

The infraorbital groove is located within which bone of the skull?

a: frontal
b: maxilla
c: sphenoid
d: zygomatic

Answer 2

b: maxilla

Question 3

Which opening of the orbit does NOT have the frontal bone as a bony boundary?

a: supraorbital foramen
b: inferior orbital fissure
c: anterior ethmoidal foramen
d: posterior ethmoidal foramen

Answer 3

b: inferior orbital fissure

Question 4

Which bone does NOT help to form the orbital margin?

a: frontal
b: maxilla
c: ethmoid
d: zygomatic

Answer 4

c: ethmoid

Question 5

Which bone contributes to the superior wall of the orbit?

a: maxilla
b: zygomatic
c: lesser wing of the sphenoid
d: greater wing of the sphenoid

Answer 5

c: lesser wing of the sphenoid

Question 6

Which bone does NOT help to form the inferior wall of the orbit?

a: maxilla
b: palatine
c: lacrimal
d: zygomatic

Answer 6

a: maxilla

Question 7

The eye lies in which portion of the orbit?

a: inferior
b: superior
c: anterior
d: posterior

Answer 7

c: anterior

Question 8

The thin capsule that surrounds the eye is called the

a: fascia alar
b: fascia bulbi
c: palpebral fascia
d: infrahyoid fascia

Answer 8

b: fascia bulbi

Question 9

Which is NOT a coat that composes the eye?

a: sclera
b: retina
c: uveal tract
d: orbital septum

Answer 9

d: orbital septum

Question 10

Which structure separates the chambers of the eye?

a: iris
b: lens
c: sclera
d: cornea

Answer 10

a: iris

Question 11

Which structure secretes aqueous humour to fill the anterior segment of the eye?

a: choroid
b: ora serrata
c: ciliary body
d: tarsal glands

Answer 11

c: ciliary body

Question 12

The anterior segment of the eye is divided into which chambers?

a: medial and lateral
b: deep and superficial
c: superior and inferior
d: anterior and posterior

Answer 12

d: anterior and posterior

Question 13

The posterior segment of the eye is called the

a: optic chamber
b: vitreous cavity
c: aqueous cavity
d: retinal chamber

Answer 13

d: retinal chamber

Question 14

Which does NOT compose the uveal tract?

a: iris
b: choroid
c: optic disc
d: ciliary body

Answer 14

c: optic disc

Question 15

Which structure forms a layer between the sclera and retina?

a: iris
b: choroid
c: optic disc
d: ciliary body

Answer 15

b: choroid

Question 16

Which is NOT located on the posterior portion of the retina?

a: cornea
b: optic disc
c: macula lutea
d: fovea centralis

Answer 16

a: cornea

Question 17

Which area is also called the ‘blind spot’?

a: pupil
b: retina
c: optic disc
d: fovea centralis

Answer 17

c: optic disc

Question 18

Which extrinsic muscle of the eye originates at the maxilla?

a: inferior rectus
b: superior rectus
c: inferior oblique
d: superior oblique

Answer 18

c: inferior oblique

Question 19

Which is NOT an action of the inferior rectus muscle?

a: intorsion
b: extorsion
c: adduction
d: depression

Answer 19

a: intorsion

Question 20

Which structure is also known as Tenon’s capsule?

a: fascia alar
b: fascia bulbi
c: palpebral fascia
d: infrahyoid fascia

Answer 20

b: fascia bulbi