Chapter 6 Key Terms

Question 1

cornea

Answer 1

transparent outer layer of the eye that covers the iris and pupil and allows light to enter

Question 2

external auditory meatus

Answer 2

external outer ear

Question 3

internal ear

Answer 3

inner ear

Question 4

iris

Answer 4

colored portion of the anterior eye

Question 5

lens

Answer 5

structure in the eye that focuses light rays on the retina

Question 6

middle ear

Answer 6

central cavity of the ear

Question 7

optic nerve

Answer 7

nerve that carries impulses for the sense of sight from the retina to the brain

Question 8

ossicles

Answer 8

three small bones of the ear that transmit vibrations from the eardrum to the internal ear

Question 9

pupil

Answer 9

opening in the iris that contracts and dilates, regulating the amount of light that enters the eye

Question 10

retina

Answer 10

innermost layer of the eye that receives images formed by the lens

Question 11

sclera

Answer 11

white, outer protective layer of the eye

Question 12

semicircular canals

Answer 12

tiny chambers in the inner ear that controls balance

Question 13

tympanic membrane

Answer 13

eardrum