Chapter 22: Respiratory System Herlihy: The Human Body in Health and Illness, 7th Edition

Which structure is called the windpipe and is supported by rings of cartilage?

a. Bronchus

b. Alveolus

c. Pharynx

d. Trachea

ANS: D

The trachea branches into the right and left

a. alveoli.

b. bronchi.

c. nares.

d. pulmonary arteries.

ANS: B

The lungs are located within the

a. mediastinum.

b. dorsal cavity.

c. spinal cavity.

d. thoracic cavity.

ANS: D

Oxygen diffuses from the alveoli into the

a. bronchioles.

b. trachea.

c. pulmonary capillaries.

d. eustachian tube.

ANS: C

The diaphragm

a. is smooth muscle that forms the bronchioles.

b. is skeletal muscle.

c. contracts in response to the firing of the vagus nerve.

d. forms the outer lining of the lungs.

ANS: B

The pleural membranes

a. line the respiratory passages.

b. form the bronchioles.

c. are serous membranes.

d. are confined to the mediastinum.

ANS: C

Dyspnea means

a. “puffed up” alveoli.

b. pneumonia.

c. cyanosis.

d. difficulty breathing.

ANS: D

The Adam’s apple is

a. cartilage.

b. the epiglottis.

c. the primary site of gas exchange.

d. the pharynx.

ANS: A

What happens when the diaphragm and the intercostal muscles relax?

a. air moves out of the lungs.

b. inhalation occurs.

c. ventilation ceases.

d. chest volume increases.

ANS: A

Which of the following best describes eupnea?

a. Kussmaul respirations

b. Vital capacity

c. Normal, quiet breathing

d. Hypoxemia

ANS: C

Which of the following is the major regulator of respiratory activity?

a. PO2

b. PCO2

c. Bicarbonate

d. Albumin

ANS: B

As plasma PCO2 increases,

a. hemoglobin synthesis increases.

b. ventilation increases.

c. vital capacity increases.

d. respirations cease.

ANS: B

Boyle’s law states the relationship between volume and

a. O2.

b. CO2.

c. pressure.

d. H2O.

ANS: C

Which of the following structures is located in the lungs?

a. Pharynx

b. Epiglottis

c. Alveoli

d. Larynx

ANS: C