physiology lesson 5 vision

Question 1

What is the eyelid slit called?

Answer 1

palpebral fissure

Question 1

What is the pink think at the inner corner of your eye called?

Answer 1

lacrimal caruncle

Question 2

What anchors the orbicularis oculi muscle?

Answer 2

tarsal plates

Question 3

What is the conjunctiva that covers only the white part of the eye called?

Answer 3

bulbar conjunctiva

Question 4

What is the conjunctival sac

Answer 4

slitlike space occurs between the conjunctiva-covered eyeball and eyelids (where contacts are)

Question 5

What is the major function of conjunctiva

Answer 5

produce a lubricating mucus that prevents the eyes from drying out

Question 6

What does the pigment layer do?

Answer 6

-absorbs light
-store Vit A
-photoreceptor cell renewal.

Question 7

From posterior to anterior the neural cell is composed of what type of cells?

Answer 7

photoreceptors, bipolar cells and ganglion cells

Question 8

What other two types of cells play role in visual processing

Answer 8

Horizontal cell and amacrine

Question 9

what is the blind spot and why is it called that

Answer 9

optic disc becuase it lacks photoreceptors.

Question 10

The fovea only contains what

Answer 10

CONES

Question 11

What are anterior and posterior segments of the eye divided by?

Answer 11

Lens

Question 12

State where the segemtnas devivde

Answer 12

Anterior: cornea to iris
Posterior: iris to lense

Question 13

Name the different fluids found in posterior and anterior segments

Answer 13

Anterior: Aqueous humour
Posterior: vitreous humor

Question 14

What part of spectrum do our eyes respond to

Answer 14

visible light: 400-700nm

Question 15

What muscle around the eye moves the eyebrow medially?

Answer 15

Corrugator muscles

Question 16

What controls contraction of the ciliary muscles

Answer 16

Parasympathetic fibers of the oculomotor nerves

Question 17

What is farsightedness called

Answer 17

Hyperopia