Chapter 25

Question 1

air embolism

Answer 1

The presence of air in the veins, which can lead to cardiac arrest if it enters the heart

Question 2

anisocoria

Answer 2

Naturally occurring uneven pupil size

Question 3

blowout fracture

Answer 3

A fracture of the orbit or of the bones that support the floor of the orbit

Question 4

conjunctiva

Answer 4

The delicate membrane that lines the eyelids and covers the exposed surface of the eye

Question 5

conjunctivitis

Answer 5

Inflammation of the conjunctiva

Question 6

cornea

Answer 6

The transparent tissue layer in front of the pupil and iris of the eye

Question 7

eustachian tube

Answer 7

A branch of the internal auditory canal that connects the middle ear to theoropharynx

Question 8

external auditory canal

Answer 8

The ear canal; leads to the tympanic membrane

Question 9

globe

Answer 9

The eyeball

Question 10

iris

Answer 10

The muscle and surrounding tissue behind the cornea that dilate and constrict the pupil, regulating the amount of light that enters the eye; pigment in this tissue gives the eye its color

Question 11

lacrimal glands

Answer 11

The glands that produce fluids to keep the eye moist; also called tear glands

Question 12

lens

Answer 12

The transparent part of the eye through which images are focused on the retina

Question 13

mastoid process

Answer 13

The prominent bony mass at the base of the skull about 1” posterior to the external opening of the ear

Question 14

optic nerve

Answer 14

A cranial nerve that transmits visual information to the brain

Question 15

pinna

Answer 15

The external, visible part of the ear

Question 16

pupil

Answer 16

The circular opening in the middle of the iris that admits light to the back of the eye

Question 17

retina

Answer 17

The light-sensitive area of the eye where images are projected; a layer of cells at the back of the eye that changes the light image into electrical impulses, which are carried by the optic nerve to the brain

Question 18

retinal detachment

Answer 18

Separation of the retina from its attachments at the back of the eye

Question 19

sclera

Answer 19

The tough, fibrous, white portion of the eye that protects the more delicate inner structures

Question 20

sternocleidomastoid muscles

Answer 20

The muscles on either side of the neck that allow movement of the head

Question 21

subcutaneous emphysema

Answer 21

A characteristic crackling sensation felt on palpation of the skin, caused by the presence of air in soft tissues

Question 22

temporomandibular joint

Answer 22

The joint formed where the mandible and cranium meet, just in front of the ear

Question 23

tragus

Answer 23

The small, rounded, fleshy bulge that lies immediately anterior to the ear canal

Question 24

turbinates

Answer 24

Layers of bone within the nasal cavity

Question 25

tympanic membrane

Answer 25

The eardrum, which lies between the external and middle ear