Eye

Question 1

Eyelids Name

Answer 1

Palpebrae

Question 2

Sclera

Answer 2

“Whites” of the eyes

Question 3

Cornea

Answer 3

Transparent enter part in front of Iris

Question 4

Iris

Answer 4

Pigmented part of the eye

Question 5

Pupil

Answer 5

Opening in the Iris

Question 6

Conjunctive Definition

Answer 6

Lining sclera and eyelid

Question 7

Conjunctiva Function

Answer 7

Secrete mucus as lubricant for eyes/eyelids

Question 8

Lacrimal Apparatus Function

Answer 8

Produces/Collects tears (Lacrimal Fluid)

Question 9

Lacrimal Gland

Answer 9

Produces and secretes tears

Question 10

Eye Fluid

Answer 10

Fluid is swept across the surface of the eye by the eyelids. Goes from lateral to medial

Question 11

Lacrimal Canaliculi

Answer 11

From Lacrimal Duncti to Nasalacrimal Duct

Question 12

Nasolacrimal Duct

Answer 12

Drains tears into nasal cavity, where they are eventually swallowed

Question 13

When a person cries, tears spill onto the cheek and person gets a runny nose. What is happening?

Answer 13

Tears flood lacrimal duct

Lacrimal duncti can’t collect all of the tears

Question 14

Medial Rectus

Answer 14

Moves eye medially (Adducts)

Looking into middle of body

Question 15

Lateral Rectus

Answer 15

Moves eye laterally (Abducts eye)

Away from body, looking out

Question 16

Superior Rectus

Answer 16

Elevates eye and moves eye medially (Adducts Eye)

Look Up

Question 17

Inferior Rectus

Answer 17

Depresses eye and moves eye medially

Looking Down

Question 18

Superior Oblique

Answer 18

(Between Superior and Medial)

Depresses eye and moves eye laterally

Question 19

Inferior Oblique

Answer 19

Elevates eye and moves eye laterally

Question 20

Lens Definition

Answer 20

Biconvex, transparent structure inside eyeball

Question 21

Lens Function

Answer 21

Changes shape (flat or rounded) to focus light rays

Question 22

Lens held in place by?

Answer 22

Suspensory Ligaments

More rounded when looking closely at an object, flattened when looking far away

Question 23

3 Eyeball Layers

Answer 23

Fibrous (External) Tunic
Vascular tunic
Retina

Question 24

Fibrous (External) Tunic

Answer 24

It is avascular

Question 25

Fibrous Tunic Components

Answer 25

Sclera | Cornea

Question 26

Fibrous Tunic; Sclera

Answer 26

Posterior 5/6 of eye

Question 27

Fibrous Tunic; Sclera Function

Answer 27

To provide shape to the eyeball and protect inner parts

Question 28

Fibrous Tunic; Cornea

Answer 28

Curved, transparent structure anterior to Iris and Pupil | Anterior 1/6 of eye

Question 29

Fibrous Tunic; Cornea Function

Answer 29

Admits and refracts (bends) light

Question 30

Laser Vision Correction

Answer 30

Laser removes some cells from the middle part of the cornea to change its shape so that it can let in more light

Question 31

Vascular Tunic Components

Answer 31

Choroid Ciliary Body Iris

Question 32

Vascular Tunic; Choroid

Answer 32

Dark brown membrane

Question 33

Vascular Tunic; Choroid Function

Answer 33

Contains many tine blood vessels that help nourish the retina

Question 34

Vascular Tunic; Ciliary Body

Answer 34

A ring of smooth muscle tissue that surrounds the lens. | Attaches to lens via suspensory ligaments

Question 35

Vascular Tunic; Ciliary Body Functions

Answer 35

1. As the smooth muscle contracts, suspensory ligaments relax to make the lens more round 2. Produces Aqueous Humor

Question 36

Vascular Tunic; Iris

Answer 36

Pigmented, colored part of eye | Pupil

Question 37

Vascular Tunic; Iris Function

Answer 37

Regulates the amount of light entering eye (by enlarging [dilating] or narrowing [constricting])

Question 38

Retina Components

Answer 38

Pigmented Layer | Neural Layer

Question 39

Retina

Answer 39

Posterior 3/4 Of eye

Question 40

Retina; Pigmented Layer

Answer 40

Outer layer Adjacent to choroid

Question 41

Retina; Pigmented Layer Function

Answer 41

Absorbs excess light to prevent reflection/glare | Provides Vitamin A to neural layer

Question 42

Retina; Neural Layer

Answer 42

Inner Layer

Question 43

Retina; Neural Layer Functions

Answer 43

Its photoreceptors receive light information and convert it into nerve impulses that are sent via CN II (Optic Nerve) to the brain

Question 44

Two Types of Photoreceptors

Answer 44

Rods | Cones

Question 45

Rods Definition

Answer 45

Low Light, only see Black and White

Question 46

Cones Definition

Answer 46

Require more light, but these let you see in color

Question 47

Optic Disc ("Blind Spot")

Answer 47

Area where the optic nerve exits the eye. Contains no photo receptors Can't detect light at that spot, taking information to brain from eye

Question 48

Macula Lutea

Answer 48

Lateral to the optic disc

Question 49

Fovea Centralis

Answer 49

In the center of Macula Lutea | Contains sharpest vision (Only Cones)

Question 50

Detached Retina

Answer 50

Fluid collects between the pigmented layer and the neural layer of the retina. (Cuts off photoreceptors from their blood supply and source of Vitamin A) Retina needs Vitamin A to function

Question 51

Internal Chambers of the Eye

Answer 51

Anterior Cavity | Posterior Cavity

Question 52

Anterior Cavity

Answer 52

Between Cornea and Lens | Filled with Aqueous Humor

Question 53

Aqueous Humor

Answer 53

Supplies nutrients and removes waste for lens and Cornea; Continually being produced and wasted

Question 54

Posterior Cavity

Answer 54

Between Lens and Retina | Contains Vitreous Humor

Question 55

Vitreous Humor

Answer 55

Helps maintains shape of eye and keeps retina against choroid. This is not continually produced (This jelly substance only produced once at birth; Reason for big eyes in children)