Patho Exam 3 (Chapters 10, 12, 13 TEST
BANK)
What happens in the lungs when the diaphragm and external intercostal muscles relax?
a. Air is forced out of the lungs.
b. Lung volume increases.
c. Intrapulmonic pressure decreases.
d. Intrapleural pressure decreases.
a
The respiratory mucosa is continuous through the:
1. upper and lower respiratory tracts.
2. nasal cavities and the sinuses.
3. nasopharynx and oropharynx.
4. middle ear cavity and auditory tube.
a. 1 only
b. 1, 2
c. 2, 3
d. 1, 3, 4
e. 1, 2, 3, 4
e
Which of the following activities does NOT require muscle contractions and energy?
a. Quiet inspiration
b. Forced inspiration
c. Quiet expiration
d. Forced expiration
c
The maximum volume of air a person can exhale after a maximum inspiration is termed the:
a. expiratory reserve volume.
b. inspiratory reserve volume.
c. total lung capacity.
,d. vital capacity.
d
Which of the following applies to the blood in the pulmonary artery?
a. PCO2 is low.
b. PO2 is low.
c. Hydrostatic pressure is very high.
d. It is flowing into the left atrium.
b
Which of the following causes bronchodilation?
a. Epinephrine
b. Histamine
c. Parasympathetic nervous system
d. Drugs that block 2-adrenergic receptors
a
The central chemoreceptors in the medulla are normally most sensitive to:
a. low oxygen level.
b. low concentration of hydrogen ions.
c. elevated oxygen level.
d. elevated carbon dioxide level.
d
Oxygen diffuses from the alveoli to the blood because:
a. PO2 is higher in the blood.
b. PO2 is lower in the blood.
c. CO2 is diffusing out of the blood.
d. more CO2 is diffusing out of cells into the blood.
b
We have an expert-written solution to this problem!
Carbon dioxide is primarily transported in the blood:
a. as dissolved gas.
, b. attached to the iron molecule in hemoglobin.
c. as bicarbonate ion.
d. as carbonic acid.
c
What would hypercapnia cause?
a. Increased serum pH
b. Decreased respirations
c. Respiratory acidosis
d. Decreased carbonic acid in the blood
c
Which of the following would result from hyperventilation?
a. Respiratory acidosis
b. Respiratory alkalosis
c. Metabolic alkalosis
d. Metabolic acidosis
b
Which of the following values is always decreased with respiratory alkalosis (compensated or
decompensated)?
a. Serum bicarbonate
b. PaCO2
c. Serum pH
d. Urine pH
b (Decompensation occurs when compensatory mechanisms cannot maintain a normal pH
range.)
What would be the most effective compensation for respiratory acidosis?
a. The kidneys eliminating more bicarbonate ions
b. The kidneys producing more bicarbonate ions
c. The kidneys reabsorbing more hydrogen ions
d. An increase in respiratory rate
b
BANK)
What happens in the lungs when the diaphragm and external intercostal muscles relax?
a. Air is forced out of the lungs.
b. Lung volume increases.
c. Intrapulmonic pressure decreases.
d. Intrapleural pressure decreases.
a
The respiratory mucosa is continuous through the:
1. upper and lower respiratory tracts.
2. nasal cavities and the sinuses.
3. nasopharynx and oropharynx.
4. middle ear cavity and auditory tube.
a. 1 only
b. 1, 2
c. 2, 3
d. 1, 3, 4
e. 1, 2, 3, 4
e
Which of the following activities does NOT require muscle contractions and energy?
a. Quiet inspiration
b. Forced inspiration
c. Quiet expiration
d. Forced expiration
c
The maximum volume of air a person can exhale after a maximum inspiration is termed the:
a. expiratory reserve volume.
b. inspiratory reserve volume.
c. total lung capacity.
,d. vital capacity.
d
Which of the following applies to the blood in the pulmonary artery?
a. PCO2 is low.
b. PO2 is low.
c. Hydrostatic pressure is very high.
d. It is flowing into the left atrium.
b
Which of the following causes bronchodilation?
a. Epinephrine
b. Histamine
c. Parasympathetic nervous system
d. Drugs that block 2-adrenergic receptors
a
The central chemoreceptors in the medulla are normally most sensitive to:
a. low oxygen level.
b. low concentration of hydrogen ions.
c. elevated oxygen level.
d. elevated carbon dioxide level.
d
Oxygen diffuses from the alveoli to the blood because:
a. PO2 is higher in the blood.
b. PO2 is lower in the blood.
c. CO2 is diffusing out of the blood.
d. more CO2 is diffusing out of cells into the blood.
b
We have an expert-written solution to this problem!
Carbon dioxide is primarily transported in the blood:
a. as dissolved gas.
, b. attached to the iron molecule in hemoglobin.
c. as bicarbonate ion.
d. as carbonic acid.
c
What would hypercapnia cause?
a. Increased serum pH
b. Decreased respirations
c. Respiratory acidosis
d. Decreased carbonic acid in the blood
c
Which of the following would result from hyperventilation?
a. Respiratory acidosis
b. Respiratory alkalosis
c. Metabolic alkalosis
d. Metabolic acidosis
b
Which of the following values is always decreased with respiratory alkalosis (compensated or
decompensated)?
a. Serum bicarbonate
b. PaCO2
c. Serum pH
d. Urine pH
b (Decompensation occurs when compensatory mechanisms cannot maintain a normal pH
range.)
What would be the most effective compensation for respiratory acidosis?
a. The kidneys eliminating more bicarbonate ions
b. The kidneys producing more bicarbonate ions
c. The kidneys reabsorbing more hydrogen ions
d. An increase in respiratory rate
b
