Description
Chapter 1: Oxygenation
and Acid-Base Evaluation
Test Bank
MULTIPLE CHOICE
1. The structure that is responsible for returning oxygenated blood to the heart is the
a. Pulmonary artery.
b. Pulmonary vein.
c. Superior vena cava.
d. Inferior vena cava.
ANS: B
The pulmonary vein carries oxygenated blood to the heart. The pulmonary artery carries
deoxygenated blood from the heart to the lungs. Both venae cavae return blood to the right
atrium of the heart.
DIF: Remember REF: 823-824
OBJ: Describe the structure and function of the cardiopulmonary system.
TOP: Planning
MSC: Physiological Integrity
2. Chemical receptors that stimulate inspiration are located in the
a. Brain.
b. Lungs.
c. Aorta.
d. Heart.
ANS: C
Chemical receptors in the aorta send signals to begin the inspiration process. The brain, lungs,
and heart all are affected by this chemical reaction.
DIF: Remember REF: 822
OBJ: State the process of the neural and chemical regulation of respiration.
TOP: Planning
MSC: Physiological Integrity
3. The nurse knows that the primary function of the alveoli is to
a. Carry out gas exchange.
b. Store oxygen.
c. Regulate tidal volume.
d. Produce hemoglobin.
ANS: A
The alveolus is a capillary membrane that allows gas exchange of oxygen and carbon dioxide
during respiration. The alveoli do not store oxygen, regulate tidal volume, or produce
hemoglobin.
DIF: Remember REF: 822
OBJ: Describe the structure and function of the cardiopulmonary system.
TOP: Knowledge MSC: Physiological Integrity
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