GMS6402: MEDICAL PULMONARY PHYSIOLOGY- PULMONARY CIRCULATION Questions And Answers Download To Pass!!!
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GMS
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GMS
GMS6402: MEDICAL PULMONARY PHYSIOLOGY- PULMONARY CIRCULATION Questions And Answers Download To Pass!!!
T/F: a RBC will spend about 0.75 seconds in the pulmonary capillary bed; during this time the RBC will transverse 3 alveoli - correct answer...True
T/F: diffusion will complete in 0.25 seco...
GMS6402: MEDICAL PULMONARY
PHYSIOLOGY- PULMONARY
CIRCULATION Questions And Answers
Download To Pass!!!
T/F: a RBC will spend about 0.75 seconds in the pulmonary capillary bed; during this
time the RBC will transverse 3 alveoli - correct answer...✔✔True
T/F: diffusion will complete in 0.25 seconds; diffusion will be complete after a RBC
passes the first alveolus - correct answer...✔✔True
T/F: elastic fibers wrap around the alveoli - correct answer...✔✔True
T/F: the pulmonary circulation receives 100% of cardiac output from the RIGHT heart;
therefore it's high flow - correct answer...✔✔True
T/F: the pulmonary circulation is a low pressure system (around 14mmHg in the
pulmonary artery) - correct answer...✔✔True
T/F: the pulmonary circulation is HIGH compliant; therefore it can tolerate large
increases in blood volume with little to no change in pressure - correct answer...✔✔
True
as additional volume of blood enters the lungs, why doesn't pressure increase? - correct
answer...✔✔-capillaries that previously had little or no blood flow are RECRUITED
-happens especially in APEX
-as a result pulmonary pressure does not increase much
-DISTENTION: blood filled capillaries are already open but they dilate even more in
order to accommodate increased blood volume
T/F: recruitment and distention occur simultaneously but recruitment usually happens
first - correct answer...✔✔True
Are the lungs uniformly ventilated? - correct answer...✔✔no
T/F: there is SLIGHTLY more ventilation at the base than the apex - correct answer...✔
✔True
AGRADESOLUTIONS
, are the lungs uniformly perfused with blood? - correct answer...✔✔no
T/F: due to gravity, there is SIGNIFICANTLY more perfusion at the base than the apex -
correct answer...✔✔True
why is there so little blood being pumped to the apex of the lung? - correct answer...✔
✔-low pressure
-where pulmonary artery is coming in, there is not a lot of pressure to get blood up
towards the apex of the lung
ventilation: perfusion ratio - correct answer...✔✔V/Q
T/F: the ventilation to perfusion ratio varies within the lungs - correct answer...✔✔True
T/F: as you move from base to apex the ventilation perfusion ratio INCREASES
significantly - correct answer...✔✔True
T/F: tuberculosis bacterium prefer alveoli that have a higher PAO2 (higher levels of
ventilation); therefore we would see TB in the apex - correct answer...✔✔True
T/F: the relative V/Q mismatch is tolerable at rest, but can worsen significantly with
disease - correct answer...✔✔True
What is normal V/Q? - correct answer...✔✔0.8
how does V/Q change when there is a pulmonary embolism? - correct answer...✔✔-
V/Q = INFINITY
-lungs still ventilated but there is NO blood perfusion (Q=0)
-alveolar gas composition resembles inspired air
how does V/Q change when there is a shunt? - correct answer...✔✔-V/Q= 0
-lungs are NOT ventilated (V=0) but they are perfused with blood
-alveolar gas composition resembles venous blood
T/F: of the 5 causes of clinical hypoxemia, V/Q mismatch is the most common; it's the
result of nearly every major respiratory disorder - correct answer...✔✔True
T/F: we want high flow and low pressure - correct answer...✔✔True
AGRADESOLUTIONS
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