Choose the best answer.

1			What is the function of the air passages beneath the conchae that create turbulence within the nasal cavity?
			A)	They amplify the voice.
			B)	The lower passages between the inferior and middle nasal conchae provide surface area for olfactory mucosa.
			C)	They cool the air as it enters.
			D)	They ensure that air is warmed and humidified.
2			Which cells produce pulmonary surfactant?
			A)	alveolar macrophages
			B)	type I alveolar cells
			C)	type II alveolar cells
			D)	goblet cells
			E)	S cells
3			What is the condition where the lung totally or partially collapses?
			A)	emphysema
			B)	pneumothorax
			C)	lung cancer
			D)	pneumonia
			E)	atelectasis
4			The smallest passageways in the lung to have ciliated epithelia are
			A)	terminal bronchioles.
			B)	respiratory bronchioles.
			C)	tertiary bronchi.
			D)	alveolar ducts.
5			What structure is most important in keeping food out of the trachea?
			A)	glottis
			B)	epiglottis
			C)	soft palate
			D)	vocal folds
6			The hilum of the lung lies on the diaphragm.
			A)	True
			B)	False
7			Vibrissae are air passages between the nasal conchae.
			A)	True
			B)	False
8			Which of the following is not a function of the respiratory system?
			A)	It allows exchange of oxygen and carbon dioxide between blood and air.
			B)	It contributes to maintenance of pH balance.
			C)	It helps to expel abdominal contents during defecation and childbirth.
			D)	It helps to transport gases to tissues.
			E)	It permits laughing.
9			The cricoid cartilage is also called the "Adam's apple".
			A)	True
			B)	False
10			What procedure might be necessary if the upper respiratory tract becomes blocked?
			A)	atelectasis
			B)	bronchodilation
			C)	bronchiostomy
			D)	tracheostomy
			E)	pneumothorax
11			What would cause bronchodilation?
			A)	sympathetic nerves
			B)	vagus nerve
			C)	asthma
			D)	inspiratory center of the medulla
			E)	stretch receptors
12			Where does the lower respiratory tract begin?
			A)	the trachea
			B)	the choanae
			C)	the primary bronchi
			D)	the bronchioles
			E)	the glottis
13			The apneustic center protects the lungs from overinflation.
			A)	True
			B)	False
14			The hilum is a slit where the primary bronchus, blood vessels, and nerves enter and leave the lungs.
			A)	True
			B)	False
15			The thin membrane that covers the surface of the lungs is the parietal pleura.
			A)	True
			B)	False
16			Men typically produce sound that is lower in pitch than women because the glottis is wider in men.
			A)	True
			B)	False
17			Squamous (type I) alveolar cells repair damaged epithelium.
			A)	True
			B)	False
18			Emphysema is a restrictive disorder.
			A)	True
			B)	False
19			The thin cells that line the surface of the alveoli and allow efficient gas exchange are great (type II) alveolar cells.
			A)	True
			B)	False
20			Why are there rings of hyaline cartilage in the trachea?
			A)	To provide support for passage of food through the esophagus.
			B)	To provide support for the mucociliary escalator.
			C)	To keep the passageway open for the continuous flow of air.
			D)	To prevent choking.
21			Tuberculosis is an obstructive disorder.
			A)	True
			B)	False