Anatomy - The Special Senses - The Eye

Question 1

What is the transparent outer layer of the eye called?

Answer 1

The cornea

Question 2

What is the coloured part of the eye that regulates the amount of the light entering it?

Answer 2

The iris

Question 3

What is the opening in centre of the iris know as?

Answer 3

The pupil

Question 4

What muscles work when there is a lot of eye trying to enter into the pupil?

Answer 4

The circular smooth muscle

Question 5

What eye muscle works when in a dark room?

Answer 5

The radial smooth muscle

Question 6

What are the three layers of the visceral layer called?

Answer 6

The choroid, iris, and the ciliary body

Question 7

Which is bigger?
The posterior chamber or the anterior chamber?

Answer 7

The anterior chamber

Question 8

Where is the posterior chamber located?

Answer 8

Between the iris and the lens

Question 9

Where is the anterior chamber located?

Answer 9

In front of the lens.

Question 10

What happens to the zonular fibres when you are trying to see up close?

Answer 10

They become thick

Question 11

Does that conjunctiva create fluid? If so, how much?

Answer 11

Yes and only a little bit.

Question 12

What do the zonular fibres do when you are trying to see far away?

Answer 12

They become thin.

Question 13

The nerve that carriers visual information to the brain is called?

Answer 13

The optic nerve.

Question 14

What colour is the retina!?

Answer 14

It is transparent

Question 15

The vascular layer between the retina and the sclera is called?

Answer 15

Choroid. The tapetum lucitum layer

Question 16

What humour is connected to the lens?

Answer 16

The aqueous humour.

Question 17

What are the eyelashes called?

Answer 17

Cillia

Question 18

What does the tapetum lucitum allow for?

Answer 18

Night vision

Question 19

What are the three layers of the eye?

Answer 19

Outer layer: fibrous layer. Made of collagen fibres.
Middle layer: vascular layer. Has three parts.
The inner layer: the nervous layer.

Question 20

What is the junction between the cornea and sclera called?
a. Limbus b. Choroid. c. Perilymph

Answer 20

The limbus

Question 21

True or false.
The vascular layer has no blood vessels.

Answer 21

False. They have a lot of blood vessels.

Question 22

True or false.
The nervous layer is only found at the back of the eye.

Answer 22

True

Question 23

Is the retina sensitive?

Answer 23

Yes

Question 24

True or false.
The lens is not transparent

Answer 24

False. The lens is transparent

Question 25

True or false. The aqueous chamber is always flowing

Answer 25

True

Question 26

True or false. The optic disc can create images

Answer 26

False

Question 27

What is special about the optic disc?

Answer 27

It has no rods or cones - therefore no image can be formed here. The blood vessels and the optic nerve come into the eye through here.

Question 28

True or false. The fovea and macula can create images.

Answer 28

True

Question 29

What is true about the fovea and macula?

Answer 29

It has a high concentration of rods and cones. Provides accurate and clear vision.

Question 30

What is the optic disc known as?

Answer 30

The blind spot

Question 31

True or false. The cones allow you to only see black and white

Answer 31

False. They allow you to see colour

Question 32

True or false. The rods have no sensitivity to colour

Answer 32

True

Question 33

What are the two parts of the conjunctiva called?

Answer 33

The bulbar and the palpebral conjunctiva.

Question 34

What is the lacrimal gland known as?

Answer 34

The tear gland

Question 35

Where do the fluids from the eye drain? Why is it located on the bottom eyelid?

Answer 35

The lacrimal puncta. It is located on the bottom because it needs to connect to the lacrimal sac and nasolacrimal duct.

Question 36

Where are the meibomian glands located?

Answer 36

At the base of the eyelashes

Question 37

What are the components of the lacrimal apparatus?

Answer 37

Lacrimal glands, lacrimal puncta, lacrimal sac, and the nasolacrimal duct.

Question 38

What do meibonmian glands produce?

Answer 38

They produce oil and sebum.

Question 39

What is the function of the meibomian glands?

Answer 39

Keep the tears from evaporating and/or falling out.

Question 40

What kind of glands are meibomian glands? A) merocrine. B) apocrine. C) holocrine

Answer 40

C) halocrine

Question 41

What type of glands are the lacrimal glands? A) merocrine. B) apocrine. C) holocrine

Answer 41

A) merocrine

Question 42

What is conjunctivitis commonly caused from?

Answer 42

Bacteria.

Question 43

What is the colour of the eye known as?

Answer 43

The choroid.

Question 44

Where is the vitreous humor?

Answer 44

Between the lens and the retina.

Question 45

What kind of substance is the vitreous humor?

Answer 45

Gel-like substance.