Lung Test Bank
bicarbonate ions
Most of the carbon dioxide in the blood is transported as
bound to hemoglobin
Most of the oxygen transported by the blood is
movement of air into and out of the lungs
Pulmonary ventilation refers to the
anatomic dead space
air remaining in the conducting portion of the respiratory system that does not reach the alveoli is known as
thermoreceptors
all of the below are sensory stimuli that can modify the activities of the respiratory center except
olfactory epithelium
all of the following provide chemoreceptor input to the respiratory centers of the medulla oblongata except the
an acute condition resulting from unusually sensitive, irritated conducting airways
asthma is
at the respiratory membrane
at the level of the alveoli where does gas exchange occur
tidal volume
at the transition point between breaths, the amount of air in your lungs is called the
all of the answers are correct
carbonic anhydrase
pco2 should be low
for maximum loading of hemoglobin with oxygen at the lungs, the
vital capacity
if a patient being tested inhales as deeply as possible and then exhales as much as possible, the volume of air expelled would be the patients
alveolar po2 decreases, blood and tissue pco2 increases
if tissue oxygen demand increases and respiratory rate and tidal volume remain the same, what happens?
chronic
the c in copd stands for
hypoxia
the condition of having low tissue
compliance
the measure of how easily the lungs expand and contract is termed
all of the answers are correct
what happens to a carbon dioxide molecule once it enters the bloodstream
hemoglobin's affinity for oxygen when the BPG level is low
which of the following would be greater
the percent of oxygen saturation of hemoglobin when the ph is 7.6
which of the following would be greater
the percent of oxygen saturation of hemoglobin when the temperature is 38 degrees centigrade
which of the following would be greater
vital capacity increase
which of these age based changeds is false
tidal volume
--------- is the amount of air that moves into the respiratory system during a single respiratory cycle under resting conditions
inspiratory reserve volume
----is the amount of air that you can inhale above the resting tidal volume
greater than the pressure in the atmosphere
Air moves out of the lungs when the pressure inside the lungs is
the volume of the thorax increases
When the diaphragm and external intercostal muscles contract,
they are equal
When there is no air movement, the relationship between the intrapulmonary and atmospheric pressure is that
decreased ph
Which of the following factors would increase the amount of oxygen discharged by hemoglobin to peripheral tissues?
double the rate of breathing
a 10 percent increase in the level of
4
a hemoglobin molecule contains ---- globular protein subunits
all of the answers are correct
damage to type 2 pneumocytes of the lungs would result in
carbon dioxide
the most important chemical regulator
brain stem
the respiratory center is housed in the ---- of the brain
alveoli
the sites of gas exchange within the lungs are the
