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Human Physiology Unit 04 Review A Respiratory
Test Description: Some review game action for the final unit
Instructions: Answer all questions to get your test result.
1) The primary drive to breathe is elicited by which of the following
A
INCREASED pCO2
B
INCREASED pO2
C
DECREASED pCO2
D
DECREASED pO2
2) The rhythmicity center is located in the
A
cerebral cortex
B
dorsal ramus
C
medulla oblongata
D
substantia nigra
3) Respiratory Distress Syndrome (RDS) is a condition associated with premature babies who lack
A
alveolar basement membrane
B
type I alveolar cells
C
pulmonary histamine receptors
D
pulmonary surfactant
4) Diffusion rate across the respiratory membrane is rapid because
A
alveoli are one cell thick
B
the air-blood barrier is two cells thick
C
all of the rest are correct
D
the alveolar epithelium and the capillary endothelium share a fused basement membrane
5) Hypoventilation can compensate for
A
metabolic alkalosis
B
respiratory alkalosis
C
respiratory acidosis
D
metabolic acidosis
6) Normal VENOUS PO2 is
A
20 mm Hg
B
40 mm Hg
C
120 mm Hg
D
100 mm Hg
7) The volume of gas remaining in the lungs after a maximum expiration is the
A
tidal volume
B
respiratory reserve volume
C
residual volume
D
vital capacity
8) Renal production of ________ is stimulated by hypoxemia
A
thrombocytes
B
renin
C
Colony Stimulating Factor
D
erythropoeitin
9) The affinity of hemoglobin for oxygen
A
is increased due to metabolic alkalosis
B
is the same as that of myoglobin
C
is greater than its affinity for carbon monoxide
D
decreases with altitude above sea level
10) The exchange of chloride ions for bicarbonate through tissue capillaries is called the
A
chloride shift
B
carbonic drift
C
Bohr effect
D
acidosis
11) Which of the following is NOT part of the conducting zone
A
alveoli
B
larynx
C
segmental bronchioles
D
trachea
12) The enzyme ________ catalyzes the formation of H2CO3 from CO2 and water
A
lactate dehydrogenase
B
nitric oxide synthase
C
carbonic anhydrase
D
renin
13) The volume of gas inspired or expired in a quiet respiration cycle is the
A
tidal volume
B
inspiratory reserve volume
C
vital capacity
D
median respiratory capacity
14) The direct role of blood oxygen levels in controlling respiration is called
A
hypoxic drive
B
perfusion
C
acidosis
D
hypocapnea
15) Carbon monoxide is lethal because it
A
fools CO2 receptors, slowing respiratory rate
B
increases CO2, resulting in acidosis
C
irreversibly binds to hemoglobin
D
increases CO2, resulting in alkalosis
16) inspiration is initiated by contraction of
A
external intercostals
B
diaphragm
C
rectus abdominus
D
scalene muscles
17) Which of the following is NOT a function of the conducting zone?
A
gas exchange
B
defense
C
sound production
D
air conditioning
18) Carbon dioxide ________ oxygen unloading and oxygen unloading ________ carbon dioxide transport.
A
decreases, facilitates
B
decreases, hinders
C
increases, hinders
D
increases, facilitates
19) During inspiration
A
transpulmonary pressure increases
B
alveolar pressure exceeds atmospheric pressure
C
intrapulmonary pressure is less than atmospheric pressure
D
the diaphragm relaxes
20) exchange of gas between air and blood is ___, while exchange of gas between blood and cells is ___
A
voluntary, involuntary
B
neccesary, optional
C
internal respiration, cellular respiration
D
external respiration, internal respiration
*select an answer for all questions
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