Chapter 9: Respiratory

Question 1

Inhalation through the nostrils is preferred over the mouth because:

a. less resistance to flow.
b. it combines olfaction with respiration.
c. it allows better conditioning of the inhaled air.
d. bacteria won’t be inhaled from the oral cavity.

Answer 1

c. it allows better conditioning of the inhaled air.

Question 2

The respiratory mucosa consists of:

a. epithelium and underlying layer of areolar tissue.
b. dense irregular connective.
c. stratified squamous cells.
d. fibrocartilage.

Answer 2

a. epithelium and underlying layer of areolar tissue.

Question 3

The vocal folds are located within the:

a. nasopharynx.
b. oropharynx.
c. larynx.
d. trachea.

Answer 3

c. larynx.

Question 4

The following is a list of some airways:

1. secondary bronchus
2. bronchioles
3. alveolar ducts
4. primary bronchus
5. respiratory bronchiole
6. alveoli
7. terminal bronchiole

The order in which air passes through is:

a. 4, 1, 2, 7, 5, 3, 6.
b. 4, 1, 2, 5, 7, 3, 6.
c. 1, 4, 2, 5, 7, 3, 6.
d. 2, 4, 1, 7, 5, 3, 6.

Answer 4

a. 4, 1, 2, 7, 5, 3, 6.

Question 5

Which one of these contains elastic cartilage?

a. thyroid cartilage
b. cricoid cartilage
c. epiglottis
d. cuneiform cartilage

Answer 5

c. epiglottis

Question 6

Which of the following statements about the trachea is FALSE?

a. is lined by pseudostratified ciliated columnar epithelium
b. is reinforced with D-shaped hyaline cartilages
c. contains many mucous glands
d. has an adventitia that is continuous with the mediastinum

Answer 6

b. is reinforced with D-shaped hyaline cartilages

Question 7

Secondary bronchi supply air to the:

a. lungs.
b. lobes of the lungs.
c. lobules of the lungs.
d. alveoli.

Answer 7

b. lobes of the lungs.

Question 8

The condition resulting from inadequate production of surfactant and the resultant collapse of alveoli is:

a. infant respiratory distress syndrome.
b. COPD.
c. anoxia.
d. pulmonary embolism.

Answer 8

a. infant respiratory distress syndrome.

Question 9

The obstructive lung disease in which elastic fibers are lost, leading to collapse of alveoli and bronchioles, is called

a. asthma.
b. bronchitis.
c. emphysema.
d. tuberculosis.

Answer 9

c. emphysema.

Question 10

The respiratory exchange surface in a lung is made from what layers from the alveolar lumen to the blood vessel lumen?

a. surfactant, cytoplasm of a type I pneumocyte, a shared basement membrane and the cytoplasm of a type I capillary
b. surfactant, cytoplasm of a type I pneumocyte, and the cytoplasm of a type I capillary only
c. surfactant, cytoplasm of Clara cell and the cytoplasm of a type I capillary only
d. surfactant, cytoplasm of a type II pneumocyte, a shared basement membrane and the cytoplasm of a type II capillary

Answer 10

a. surfactant, cytoplasm of a type I pneumocyte, a shared basement membrane and the cytoplasm of a type I capillary