CN II Optic

Question 1

The optic vesicle is derived from this, an embryological derivative

Answer 1

Prosencephalon

Question 2

The optic nerve is an extension of what?

Answer 2

Brain

Question 3

Optic nerves are composed of axons from what layer of the retina?

Answer 3

Ganglionic layer of retina

Question 4

Axons of ganglionic neurons of the retina form what?

Answer 4

Layer of the optic nerve

Question 5

What is the outer layer of the eyeball?

Answer 5

Fibrous tunic

Question 6

What are the two components of the fibrous tunic?

Answer 6

Sclera and cornea

Question 7

This occupies the posterior 4/5ths to maintain the shape of the eyeball

Answer 7

Sclera

Question 8

This occupies the anterior 1/5th and is transparent for light pass

Answer 8

Cornea

Question 9

What are the three components of the vascular tunic?

Answer 9

Iris
Ciliary Body
Choroidea

Question 10

What is another term for vascular tunic?

Answer 10

Uvea

Question 11

What is the anterior part of the vascular tunic?

Answer 11

Iris

Question 12

What is the posterior part of the vascular tunic?

Answer 12

Choroidea

Question 13

What is the anterolateral part of the vascular tunic?

Answer 13

Ciliary body

Question 14

In the internal or sensory tunic of the eye (retina), how many layers are present?

Answer 14

10

Question 15

This is also known as Jacob’s membrane?

Answer 15

Rods and cones

Question 16

The retina has this cell type between the internal and external limiting membranes

Answer 16

Glial cells of Muller

Question 17

Transversally connecting cells in the outer plexiform layer

Answer 17

Horizontal cells

Question 18

Cells in the inner plexiform layer

Answer 18

Amacrine cells

Question 19

All the optic nerves in the layer of the nerve fibers converge toward this

Answer 19

Optic papilla or optic disc

Question 20

The optic disc penetrates the choroid and sclera at this location

Answer 20

Lamina cribrosa

Question 21

The optic nerve enters the cranial cavity through this on the sphenoid bone

Answer 21

Optic canal

Question 22

What runs with the optic nerve through the optic canal?

Answer 22

Ophthalmic artery

Question 23

The right and left optic nerves form this

Answer 23

Optic chiasma

Question 24

The optic nerves from what half of both eyes decussate?

Answer 24

Nasal half

Question 25

From the chiasma, the optic tracts run around the cerebral peduncles to this

Answer 25

Lateral geniculate bodies

Question 26

The optic tract of a single eye is composed of what?

Answer 26

Fibers from the lateral half of the eye on the same side and nasal half of the eye on the opposite side

Question 27

What are the three nucleuses of termination?

Answer 27

Lateral geniculate body Pretectal Superior colliculus

Question 28

Which is the principal nucleus of termination?

Answer 28

Lateral geniculate body

Question 29

The lateral geniculate body projects as an optic radiation to which Brodmann area?

Answer 29

Brodmann 17

Question 30

Which gyrus is included in Brodmann area 17?

Answer 30

Cuneus gyrus

Question 31

This nucleus of termination is for the reflex movement of the sphincter pupillae

Answer 31

Pretectal

Question 32

The pretectal nucleus of termination goes through what nucleus and ganglion?

Answer 32

Edinger-Westphal nucleus | Ciliary ganglion

Question 33

What nucleus of termination projects for the reflex movement of the head and neck through the ventral column of the cervical cord?

Answer 33

Superior colliculus

Question 34

The right an left cortical center of vision are connected through what?

Answer 34

Corpus callosum

Question 35

The three tunics that make up the wall of the eyeball is continuous from what?

Answer 35

Meninges

Question 36

The outer sheath from the dura blends with what?

Answer 36

Sclera

Question 37

The intermediate sheath is continuous from what?

Answer 37

Arachnoid mater

Question 38

The intermediate sheath is separated from the outer by what?

Answer 38

Subdural space

Question 39

The intermediate sheath is separated from the inner by what?

Answer 39

Subarachnoid space

Question 40

The inner sheath is continuous with what?

Answer 40

Pia mater

Question 41

The pia mater is vascular and closely invests what nerve?

Answer 41

Optic nerve

Question 42

Increased pressure due to excess fluid in the general subarachnoid space from an intracranial neoplasm

Answer 42

Papillodema

Question 43

Optic tract lesion only affecting half of the visual field

Answer 43

Hemianopia or hemianopsia

Question 44

Peripheral degeneration of visual field

Answer 44

Tunnel vision