In the pulmonary circulation

A The vascular resistance decreases at birth
B Hypoxia causes vasodilatation
C The vascular resistance is about 10 times lower than the total peripheral resistance
D Pulmonary artery & vein pressure increases by the same amount from heart level to the base in upright position
E If the cardiac output doubles
F pulmonary artery pressure also doubles

Correct Answer: The vascular resistance decreases at birth

Bissoy MCQ
#Physiology #Respiratory physiology #Pulmonary circulation

Related Questions

Which of the following are involved directly in pulmonary circulation?
A left ventricle, aorta, and inferior vena cava
B right atrium, aorta, and left ventricle
C superior vena cava, right atrium, and left ventricle
D right ventricle, pulmonary artery, and left atrium
while there is -- single newspaper with a large national circulation, many magazines have national circulation .
A not
B noe
C no
D not any one
The type of liquor circulation system to be ' employed in evaporators (viz. natural or forced circulation) is determined mainly by the __________ of the liquid.
A Viscosity
B Density
C Thermal conductivity
D Corrosive nature
The diameter of tubes for natural circulation boiler as compared to controlled circulation boilers is
A More
B Less
C Same
D Could be more or less depending on other factors
Forced circulation evaporators are useful for the concentration of viscous, salting and scale forming liquors. Which of the following is a forced circulation evaporator?
A Long vertical evaporator
B Horizontal tube evaporator
C Agitated film evaporator
D Calenderia vertical tube evaporator
A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator
A Is economical in operation
B Employs high velocity, high heat transfer rate and less heating surface requirement
C Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle
D Both B & C
which one of the following is a source of pulmonary embolism?
A Deep veins of leg
B IIiac arterics
C Mesentoric vein
D Postal vein
Changes that occur during different phases of pulmonary ventilation are
A Right ventricular stroke volume is more during inspiration compared to left ventricular stroke volume
B Physiological splitting of 2nd heart sound is more prominent during inspiration
C Increase in heart rate during inspiration
D Most of the tidal air enters into the upper part of the lung.
E Fall in intra abdominal pressure during inspiration
Factors increase pulmonary vascular resistance are
A Hypoxia
B Acidosis
C Nitric oxide
D Histamine
E Leukotrines
The pulmonary ventilation perfusion ratio is
A Increased by hemorrhage
B About 0.8 at heart Level
C More in base than apex on erect posture
D Decreased in exercise
E Decreased with increased physiological dead space ( ↓ in Physiological shunt )

Next steps