40B - Lab - Exercise #24

Question 1

Lacrimal gland

Answer 1

Produces and secretes tears onto eye

Question 2

Lacrimal canal

Answer 2

Drains tears from eye

Question 3

Bulbar conjunctiva

Answer 3

Thin protective mucus layer that covers anterior part of the white if the eye but not the cornea

Question 4

Conjunctivitis

Answer 4

Pink eye; inflammation of the bulbar conjunctivia

Question 5

3 layers of the eye

Answer 5

Fibrous tunic, vascular tunic, sensory tunic

Question 6

What makes up the fibrous tunic?

Answer 6

Cornea and sclera

Question 7

Cornea

Answer 7

Anterior; transport portion that covers iris and pupil

Question 8

Sclera

Answer 8

Tough white part of eye. Covers most of eye

Question 9

Scleral venous sinus

Answer 9

Opening found at junction of sclera and cornea. Drains aqueous humor back into bloodstream

Question 10

What makes up the vascular tunic?

Answer 10

Iris, ciliary body, and choroid

Question 11

Iris

Answer 11

Anterior portion of vascular tunic. Controls pupil size and gives eye color

Question 12

Pupil

Answer 12

Opening of middle of eye

Question 13

Ciliary body

Answer 13

Consist of ciliary process and ciliary muscle

Question 14

Ciliary muscles

Answer 14

Circular smooth muscle that contracts to control shape of lens

Question 15

Ciliary process

Answer 15

Secrete aqueous humor

Question 16

Suspensory ligaments

Answer 16

Fibers that attach ciliary process to lens

Question 17

Choroid

Answer 17

Poster part of vascular tunic. Nourishes retina

Question 18

What is the sensory tunic made up of?

Answer 18

Retina and ora serrata

Question 19

Ora serrata

Answer 19

Boundary between ciliary muscle and retina

Question 20

Lens

Answer 20

Divides interior of eyeball into an anterior cavity and a vitreous chamber

Question 21

Anterior cavity

Answer 21

Space between cornea and lens that is filled with aqueous humor

Question 22

Anterior chamber

Answer 22

Between cornea and iris

Question 23

Posterior chamber

Answer 23

Between iris and lens

Question 24

Vitreous chamber

Answer 24

Posterior cavity. Located between lens and retina. This is filled with vitreous humor

Question 25

Vitreous humor

Answer 25

Gel like substance that holds retina flat against choroid

Question 26

Retina

Answer 26

Neural tissue from outgrowth of the brain.

Consist of pigmented layer and 3 layers of neurons

Question 27

3 layers of neurons in retina

Answer 27

1. Photoreceptor layer
2. Bipolar cell layer
3. Ganglion cell layer

Question 28

Photoreceptor cell layer

Answer 28

Deepest layer

Contains rods and cones

Question 29

Bipolar cell layer

Answer 29

Middle neural layer

Synapses with rod and cones then with ganglion cell layer

Question 30

Ganglion cell layer

Answer 30

Superficial neural layer

Axons from this layer extend through the optic disc and leave eyeball as optic nerve

Question 31

Optic disc

Answer 31

Does not contain photoreceptors and forms the blind spot

Question 32

Macula lutea

Answer 32

Center of the neural portion of the retina

Question 33

Central fovea

Answer 33

Middle of macula lutea.

Contains high density of cones and is not covered by ganglion and bipolar cell layer

Question 34

What makes up the lacrimal apparatus?

Answer 34

Lacrimal gland and lacrimal canal

Question 35

Cataracts

Answer 35

Loss of transparency of the lens

Question 36

Glaucoma

Answer 36

Aqueous humor is unable to drain out the scleral venous sinus