Ch 15: Continued

Question 1

Emmetropia

Answer 1

Ciliary muscles are relaxed and lens is flat

Question 2

Distant vision

Answer 2

Ciliary muscles in the ciliary body are relaxed
- lens is flat

Question 3

Near vision

Answer 3

Ciliary muscles in the ciliary body contract
- lens is oval shaped

Question 4

Path of light entering the eye

Answer 4

1. Lights strikes cornea, then anterior chamber, then pupil, then lens.
2. Like goes to the ventrious chamber, then light moves back to Fovia ventralious on retina.

Question 5

What is the first layer for the path of light layer?

Answer 5

Ganglionic layer

Question 6

What is the last layer of path of light?

Answer 6

Photo receptor layer

Question 7

What is the first layer to receive action potential?

Answer 7

Ganglionic layer

Question 8

What is the last layer to receive action potential?

Answer 8

Photo receptor layer

Question 9

Definition of focal point

Answer 9

Like crosses together when entering in the retina

Question 10

The nasal part of the left visual field is also called

Answer 10

Ipsilateral

Question 11

The temporal part of left visual field is

Answer 11

Is contralateral when it hits optic chiasm

Question 12

What is the visual pathway using left visual field?

Answer 12

1. Light passes through optic nerve.
2. Optic chiasm.
3. Optic tracks.
4. Superior colliculi.
5. Lateral geniculate nuclei.
6. Optic radiation
7. Visual cortex in occipital lobe

Question 13

Definition of astigmatism

Answer 13

Cornea Orleans, not uniformly curved

Question 14

Cataract

Answer 14

Clouding of the lens

Question 15

Diabetic retinopathy

Answer 15

Dysfunction of peripheral circulation

Question 16

Glaucoma

Answer 16

Increased intraocular pressure by aqueous humor build up

Question 17

Hyperopia

Answer 17

Farsightedness

Question 18

Macular degeneration

Answer 18

Common in older people, loss in acute vision

Question 19

Myopia

Answer 19

Nearsightedness

Question 20

Presbyopia

Answer 20

Old peoples eyes degeneration of accommodation
-Can be corrected by glasses

Question 21

Retinal detachment

Answer 21

Results in complete blindness

Question 22

Auracle or pinna

Answer 22

Elastic cartilage covered with skin

Question 23

External auditory canal

Answer 23

Lined with hairs in ceruminous glands

Question 24

Middle ear infection is caused by

Answer 24

Otitis media

Question 25

What allows the ear infection to occur/drain?

Answer 25

Auditory tube

Question 26

What are three (ossicles) inner part of the ear?

Answer 26

1. Malleus.
2. Incus.
3. Stapes

Question 27

Function of cochlea

Answer 27

Hearing

Question 28

Function of vestibule

Answer 28

Static balance

Question 29

Vestibulocochlear nerve

Answer 29

Hearing and balance

Question 30

Function of semi circular canals

Answer 30

Dynamic balance

Question 31

What membrane separates the external ear from the inner and middle ear?

Answer 31

Tim panic membrane

Question 32

What muscle is associated with head of malleus

Answer 32

Tensor, tympani muscle

Question 33

What muscle is associated with stapes

Answer 33

Stapedius muscle

Question 34

Is incus have a muscle to associate with

Answer 34

No

Question 35

How many chambers is there in the inner ear?

Answer 35

Three Chambers

Question 36

What are the three Chambers in the inner ear?

Answer 36

Scala vestibuli
Scala media
Scala tympani

Question 37

What are the two membranes in the inner ear?

Answer 37

Vestibular membrane, and basilar membrane

Question 38

What are both membranes filled with?

Answer 38

Perilymph

Question 39

What does round window do

Answer 39

Dampens the sound wave

Question 40

Function of otolithic membrane

Answer 40

Hair, rubbing up to perceive static balance