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