Lab 11 - Special Senses

Question 1

Describe the cones of the eye

Answer 1

Color vision, work in bright light, give detail

Question 2

Describe the rods of the eye

Answer 2

Night vision, work in dim light

Question 3

The _____ of the eye is clear, whereas the ______ of the eye is white.

Answer 3

cornea; sclera

Question 4

List the 3 tunics of the eye from superficial to deep

Answer 4

Fibrous, vascular, and neural tunics

Question 5

What two things make up the fibrous tunic?

Answer 5

The sclera and cornea

Question 6

What 4 things make up the vascular tunic?

Answer 6

The choroid, ciliary body, anterior segment with aqueous humor, and the iris

Question 7

What 5 things make up the neural tunic?

Answer 7

Retina, ora serrata, macula lutea, fovea centralis, and optic disc

Question 8

The dark part of the vascular tunic is called the _______.

Answer 8

choroid

Question 9

What part of the eye contracts when you look at something close to your face?

Answer 9

The ciliary body

Question 10

What does the ciliary body do?

Answer 10

Contracts when you look at something close to you

Question 11

The _______ humor is in the front of the eye, and the _________ humor is in the back

Answer 11

aqueous; vitreous

Question 12

What is the dark spot on the retina called?

Answer 12

The fovea

Question 13

What is the dark ring around the fovea called?

Answer 13

Macula

Question 14

What 3 cranial nerves control eye movement?

Answer 14

Oculomotor, trochlear, and abducens

Question 15

What muscles do the oculomotor nerve control?

Answer 15

Superior rectus, medial rectus, inferior rectus, and inferior oblique

Question 16

What muscle does the trochlear nerve control?

Answer 16

Superior oblique

Question 17

What muscle does the abducens nerve (CN6) control?

Answer 17

Lateral rectus

Question 18

What eye muscles extend laterally instead of inferiorly?

Answer 18

Superior and inferior oblique

Question 19

The outer cartilaginous part of the ear is called the _______ or ________

Answer 19

auricle or pinna

Question 20

What three things make up the outer ear?

Answer 20

Auricle/pinna, external acoustic meatus, and tympanic membrane

Question 21

What does the external acoustic meatus (external auditory canal) do?

Answer 21

Has hairs and ceruminous glands that make ear wax

Question 22

What does the tympanic membrane do?

Answer 22

Vibrates from sound waves

Question 23

What is the tympanic membrane also called?

Answer 23

Ear drum

Question 24

What are the 4 parts of the middle ear?

Answer 24

Malleus, incus, stapes, and eustachian tube

Question 25

What makes up the auditory ossicles?

Answer 25

Malleus, incus, and stapes

Question 26

Describe the eustachian (auditory) tubes

Answer 26

• Held closed by cartilage

- Goes to pharynx

Question 27

What makes up the inner ear?

Answer 27

3 semicircular canals, vestibule, and cochlea

Question 28

What do the 3 semicircular canals do?

Answer 28

Help with dynamic equilibrium

Question 29

What produces the aqueous humor of the eye?

Answer 29

Ciliary body

Question 30

What type of muscle makes up the iris?

Answer 30

Smooth