Week 4 - Eye Anatomy

Question 1

Optic Disc

Answer 1

1. Blind Spot in posterior of eye
2. Where the retina and optic nerve meet.
3. no photoreceptors

Question 2

Sclera

Answer 2

1. Posterior of Fibrous Tunic
2. White part of eye
   3.Tough
3. Collagenous
4. Tough, protective, outer layer

Question 3

Vitreous Humor

Answer 3

1. Posterior cavity
2. Helps maintain pressure and shape of the eye
3. Jelly like substance

Question 4

Pupil

Answer 4

Where the light enters the eye

Question 5

Retina

Answer 5

1. In the 3rd Tunic - Sensory Layer
2. pigmented & Neural
3. Gathers and processes light
4. Where the receptors are located - Rods and Cones

Question 6

Iris

Answer 6

1. In the Vascular Tunic (uvea)
2. color surrounding the pupil
3. Where the light enters and hits the retina
4. Dark - dilates - symapthetic
5. Light - constrict - parasympathetic

Question 7

Lens

Answer 7

Focuses light rays by changing shape

Question 8

Fovea Centralis

Answer 8

1. cones highly concentrated
2. allows for high visual acuity

Question 9

Ciliary Zonule Ligaments

Answer 9

1. Connects the lense of the eye to the ciliary muscles
2. the circumferential suspensory ligament that connects the lens of the eye to the ciliary body.

Question 10

Optic Nerve

Answer 10

1. Main receptors of light signals
2. Carries signal to the occipital lobe

Question 11

Cornea

Answer 11

1. Anterior of Fibruous Tunic
2. Collagen in parallel (specialization) makes cornea clear
3. Clarity of the eye
   by:
   Dehydrate the eye by - Na+ pumps working –> water follows by osmosis
4. Refracts light
5. window into the world

Question 12

Choroid

Answer 12

1. In vascular Tunic (uvea)
2. Posterior region of the eye
3. Pigment absorbs light
4. contains blood supply

Question 13

Aqueous Humor

Answer 13

1. Anterior cavity
2. Watery solutes

Question 14

Scleral Venous Sinus

Answer 14

1. Drains the aqueous humor from the eye

Question 15

Ciliary Body

Answer 15

1. In Vascular tunic (Uvea)
2. Anterior region of the eye
3. Ring surrounding the lens
4. Ciliary Muscle helps control the shape of the lens - which controls the focus of the eye