Chapter 17 (EYE)

Question 1

Another name for the eyelids

Answer 1

Palpebrae

Question 2

Act as windshield wipers to clean the eye

Answer 2

Eyelids (Palpebrae)

Question 3

Gap between the 2 eyelids

Answer 3

Palpebral fissure

Question 4

Where 2 eyelids connect

Answer 4

Medial canthus & Lateral canthus

Question 5

Prevent foreign matter from reaching the eye

Answer 5

Eye lashes

Question 6

Along inner margin of eyelid; that secrete a lipid rich product that prevents eyelids from sticking together.

Answer 6

Tarsal glands

Question 7

Located at medial canthus that produce secretions called “sleep” in corner of eye

Answer 7

Lacrimal caruncle

Question 8

Epithelial surface of the eyelid/eye that contacts the eye/eyelid.

Answer 8

Conjuctiva

Question 9

Two types of Conjuctiva

Answer 9

• Palpebral conjunctiva

- Ocular conjunctiva

Question 10

Produces, distributes, and removes tears

Answer 10

Lacrimal apparatus

Question 11

What does the lacrimal apparatus consist of? (6)

Answer 11

1. Lacrimal gland
2. Excretory lacrimal ducts
3. Lacrimal puncta
4. Lacrimal canaliculi
5. Lacrimal sac
6. Nasolacrimal duct

Question 12

The eye consists of 3 layers what are they?

Answer 12

• Fibrous tunic
• Vascular tunic (Uvea)
• Neural tunic (Retina)

Question 13

Cavity that contains vitreous humor?

Answer 13

Posterior Cavity

Question 14

Cavity that contains aqueous humor?

Answer 14

Anterior Cavity

Question 15

Outermost layer, has blood vessels and nerves and is primarily made up of collagen and elastic fibers

Answer 15

Fibrous tunic

Question 16

Middle layer. Contains more blood vessels, lymphatic vessels, and eye muscles.

Answer 16

Vascular tunic (Uvea)

Question 17

Outermost layer. Has blood vessels and nerves and is primarily made up of collagen and elastic fibers.

Answer 17

Fibrous tunic

Question 18

These cause constriction of pupil; reduces diameter of pupil.

Answer 18

Pupillary constrictor muscles

Question 19

These dialate pupil; increases the diameter of pupil.

Answer 19

Pupillary dilator muscles

Question 20

Where the iris attaches to the eye

Answer 20

Ciliary body

Question 21

A vascular layer that delivers 02 and nutrients to the eye..

Answer 21

Choroid

Question 22

Determines amount of light allowed into the eye.

Answer 22

Pupil

Question 23

2 layers of Neural tunic (Retina)

Answer 23

• Pigmented part

- Neural part

Question 24

Cells that are stimulated by light

Answer 24

Photoreceptors

Question 25

Types of photoreceptors

Answer 25

Rods and cones

Question 26

Allow you to see in dim light, does not allow us to see in color. Most numerous.

Answer 26

Rods

Question 27

Allows you to see colors and used in times of bright light.

Answer 27

Cones

Question 28

3 types of cones

Answer 28

Blue Green Red

Question 29

When 1 type of cone does not work

Answer 29

Color blindness

Question 30

Formed from ganglion's axon

Answer 30

Optic nerve

Question 31

Area where cones are present but rodes are not.

Answer 31

Macula latea

Question 32

Center of the macula lutea, has the highest number of cones.

Answer 32

Fovea

Question 33

Location of the optic nerve where no photoreceptors located. Also called blind spot

Answer 33

Optic disk

Question 34

Junction between the retina and the ciliary body; serrated region.

Answer 34

Ora serrata

Question 35

Part of the diencephalon (Brain) and is a thin membrane attached at only 2 points. Optic disk, and Ora serrata

Answer 35

Retina

Question 36

How light passes from eye to brain

Answer 36

``` Pigmented part Neural part rods or cones Bipolar cells Ganglion cells Optic nerve Brain ```

Question 37

Normal vision; image is focused on retina

Answer 37

Emmetropia

Question 38

(Near sighted) image is focused short of retina; correct with diverging lens.

Answer 38

Myopia

Question 39

(Far sighted) image is focused past/beyond retina; correct with converging lens.

Answer 39

Hyperiopia