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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 pO2
B
DECREASED pO2
C
INCREASED pCO2
D
DECREASED pCO2
2) The rhythmicity center is located in the
A
dorsal ramus
B
substantia nigra
C
cerebral cortex
D
medulla oblongata
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
the alveolar epithelium and the capillary endothelium share a fused basement membrane
D
all of the rest are correct
5) Hypoventilation can compensate for
A
respiratory acidosis
B
metabolic acidosis
C
respiratory alkalosis
D
metabolic alkalosis
6) Normal VENOUS PO2 is
A
100 mm Hg
B
120 mm Hg
C
40 mm Hg
D
20 mm Hg
7) The volume of gas remaining in the lungs after a maximum expiration is the
A
vital capacity
B
respiratory reserve volume
C
residual volume
D
tidal volume
8) Renal production of ________ is stimulated by hypoxemia
A
renin
B
erythropoeitin
C
Colony Stimulating Factor
D
thrombocytes
9) The affinity of hemoglobin for oxygen
A
decreases with altitude above sea level
B
is increased due to metabolic alkalosis
C
is greater than its affinity for carbon monoxide
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
chloride shift
C
acidosis
D
carbonic drift
11) Which of the following is NOT part of the conducting zone
A
larynx
B
trachea
C
segmental bronchioles
D
alveoli
12) The enzyme ________ catalyzes the formation of H2CO3 from CO2 and water
A
nitric oxide synthase
B
lactate dehydrogenase
C
renin
D
carbonic anhydrase
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
acidosis
B
perfusion
C
hypoxic drive
D
hypocapnea
15) Carbon monoxide is lethal because it
A
increases CO2, resulting in alkalosis
B
fools CO2 receptors, slowing respiratory rate
C
increases CO2, resulting in acidosis
D
irreversibly binds to hemoglobin
16) inspiration is initiated by contraction of
A
diaphragm
B
rectus abdominus
C
external intercostals
D
scalene muscles
17) Which of the following is NOT a function of the conducting zone?
A
defense
B
gas exchange
C
air conditioning
D
sound production
18) Carbon dioxide ________ oxygen unloading and oxygen unloading ________ carbon dioxide transport.
A
increases, facilitates
B
decreases, facilitates
C
increases, hinders
D
decreases, hinders
19) During inspiration
A
intrapulmonary pressure is less than atmospheric pressure
B
the diaphragm relaxes
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
neccesary, optional
C
voluntary, involuntary
D
internal respiration, cellular respiration
*select an answer for all questions
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