External respiration takes place within the:
a. Bronchi
b. Bronchioles
c. Alveoli
d. Trache

c. Alveoli

The lower respiratory system consists of:
a. Oropharynx, bronchi, and bronchioles
b. Trachea, nasopharynx, and alveoli
c. Trachea, bronchi, and bronchioles
d. Larynx, trachea, and bronchi

c. Trachea, bronchi, and bronchioles

The thin-walled sac where oxygen and carbon dioxide are exchanged
with the blood in the pulmonary circulatory system is a(n):
a. Bronchiole
b. Alveolus
c. Tertiary bronchus
d. Alveolar duct

b. Alveolus

The trachea is:
a. A noncollapsible tubular structure of C-shaped cartilage
b. A boxlike structure consisting of nine pieces of cartilage
c. Connected to the nasopharynx superiorly
d. A noncollapsible tubular structure of oval-shaped cartilage

a. A noncollapsible tubular structure of C-shaped cartilage

The blood supply to nourish and support lung tissue is the:
a. Low-pressure system
b. Pulmonary circulation
c. Bronchial circulation
d. Low-resistance system

c. Bronchial circulation

The serous membrane lining that adheres to the chest wall is the:
a. Parietal viscera
b. Visceral pleura
c. Parietal pleura
d. Serous fibrous pleura

c. Parietal pleura

For what purpose is a chest radiograph obtained after endotracheal
tube insertion?
a. To check for pneumonia
b. To insure proper placement/position
c. To check for puncture of the trachea
d. All of these are reasons to obtain a chest radiograph after
endotracheal tube insertion.

b. To insure proper placement/position

What result can occur when an endotracheal tube is positioned too high?
a. pneumothorax
b. pneumomediastinum
c. left lung atelectasis
d. aspiration pneumonia

d. aspiration pneumonia

What is a common result of an endotracheal tube that is positioned
too low and into the right main stem bronchus?
a. pneumothorax
b. pneumomediastinum
c. left lung atelectasis
d. right main stem bronchus puncture

c. left lung atelectasis

What image is obtained to verify the correct placement of a central
venous catheter?
a. Chest radiograph
b. KUB
c. Soft tissue neck
d. All of these

a. Chest radiograph