Chp 28 Vocab

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

blow-out 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 tube that connects the middle ear to the oropharynx.

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 inch (2.5 cm) 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 electric 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; a thin, semitransparent membrane in the middle ear that transmits sound vibrations to the internal ear by means of auditory ossicles.