Related Questions

Ventilation - perfusion ratio
A Is the ratio of pulmonary ventilation to pulmonary blood flow
B Varies in various parts of lungs as an effect of gravity
C In upright position declines in a linear fashion from base to apex
D Non-uniformity of ventilation and perfusion of lungs can cause decline in co2 content
E Uniformity of this ratio can cause decline in systemic arterial PO2
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
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
Factors increase pulmonary vascular resistance are
A Hypoxia
B Acidosis
C Nitric oxide
D Histamine
E Leukotrines
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
When CO2 is removed from the pulmonary capillary, there is a net
A Efflux of Cl- from RBC
B Influx of HCO3 in RBC
C Increase in pH of blood
D Efflux of O2 from RBC
E Increase in PCV of blood
Causes of pulmonary hypertension are
A Mitral stenosis
B Eisenmenger's syndrome
C Cirrhosis of liver
D Pulmonary stenosis
E Tetralogy of fallot
Features of pulmonary hypertension include
A Loud 2nd heart sound
B Left parasternal heave
C Prominent C wave of jugular venous pulsation
D Late diastolic murmur in pulmonary area
E Bilateral basal crepitions over both lungs
Causes of pulmonary hypertension include
A Mitral stenosis
B Eisenmenger's syndrome
C Interstitial lung disease
D Pulmonary stenosis
E Tetralogy of fallot
Pulmonary hypertension may be associated with
A Left parasternal heave
B Loud 2nd heart sound
C Prominent ‘c’ wave in JVP
D Late diastolic murmur in pulmonary area
E Bilateral basal crepitations

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