Chapter 12 Vocabulary

Question 1

adenoids

Answer 1

lymphatic tissue in the nasopharynx; pharyngeal tonsils

Question 2

alveolus

Answer 2

air sac in the lung

Question 3

apex of the lung

Answer 3

tip or uppermost portion of the lung. An apex is the tip of a structure

Question 4

Base of the lung

Answer 4

lower portion of the lung

Question 5

cilia

Answer 5

thin hairs attached to the mucous membrane epithelium lining the respiratory tract. They clear bacteria and foreign substances from the lung. Cigarette smoke impairs the function of cilia

Question 6

diaphragm

Answer 6

muscle separating the chest and abdomen. It contracts to pull air into the lungs and relaxes to push air out

Question 7

epiglottis

Answer 7

lid-like piece of cartilage that covers the larynx, preventing food from entering the larynx and trachea during swallowing

Question 8

expiration

Answer 8

breathing out (exhalation)

Question 9

glottis

Answer 9

Slit-like opening to the larynx

Question 10

hilum of the lung

Answer 10

midline region where the bronchi, blood vessels, and nerves enter and exit the lungs. Hilar means pertaining to (at) the hilum

Question 11

inspiration

Answer 11

breathing in (inhalation)

Question 12

larynx

Answer 12

voice box; containing the vocal cords

Question 13

lobe

Answer 13

divisioin of a lung

Question 14

mediastinum

Answer 14

region between the lungs in the chest cavity. It contains the trachea, heart, lymph nodes, aorta, esophagus, and bronchial tubes

Question 15

nares

Answer 15

openings though the nose carrying air into the nasal cavities

Question 16

palatine tonsil

Answer 16

one of a pair of almond-shaped masses of lymphatic tissue in the oropharynx

Question 17

paranasal sinus

Answer 17

one of the air caities in the bones near the nose

Question 18

parietal pleura

Answer 18

outer layer of pleura lying closer to the ribs and chest wall

Question 19

pharynx

Answer 19

throat; including the nasopharynx, oropharynx, and laryngopharynx

Question 20

pleura

Answer 20

double-layered membrane surrounding each lung

Question 21

pleural cavity

Answer 21

space between the folds of the pleura

Question 22

pulmonary parenchyma

Answer 22

essential parts of the lung, responsible for respiration; bronchioles and alveoli

Question 23

respiration

Answer 23

process of moving air into and out of the lungs; breahting

Question 24

trachea

Answer 24

windpipe

Question 25

visceral pleura

Answer 25

inner layer of pleura lying closer to the lung tissue