Bronchial circulation is associated with__________________?
A. Air conditioning
B. Drug absorption
C. Gaseous exchange
D. Reserve volume
The work of breathing__________________?
The work of breathing__________________?
A. is inversely related to lung compliance
B. remains constant during exercise
C. is not affected by respiratory
D. decreased in lying posture
Shift of the oxygen dissociation curve to right is caused by the following factors EXCEPT_______________?
Shift of the oxygen dissociation curve to right is caused by the following factors EXCEPT_______________?
A. Increased 2,3 BPG
B. Increased temperature
C. Increased concentration of carbon – di – oxide
D. Increased concentration of oxygen
At high altitudes the following changes takes place except_______________?
At high altitudes the following changes takes place except_______________?
A. Increase in respiratory rate
B. Increases in depth of respiration
C. Increase in oxygen carrying capacity of blood
D. Increase in partial pressure of CO2
Which of the following statements about pulmonary surfactant is false ?
Which of the following statements about pulmonary surfactant is false ?
A. It is secreted by Type II pneumocytes
B. It contains lecithin and sphingomyelin
C. It increases surface tension
D. It prevents collapse of smaller alveoli
Increase in partial pressure of CO2 leading to release of oxygen to the tissues is________________?
Increase in partial pressure of CO2 leading to release of oxygen to the tissues is________________?
A. Haldane effect
B. Bohr effect
C. Breur effect
D. Hamburger effect
Ventilation perfusion ratio is maximum in_______________?
Ventilation perfusion ratio is maximum in_______________?
A. Base of lung
B. Apex of lung
C. Posterior lobe of lung
D. Middle lobe of lung
Vital capacity is a measure of________________?
Vital capacity is a measure of________________?
A. Tidal volume
B. Inspiratory reserve volume plus expiratory volume
C. Tidal volume plus inspiratory reserve volume plus expiratory reserve volume
D. Expiratory reserve volume plus reserve volume
Oxygen affinity decreases in_________________?
Oxygen affinity decreases in_________________?
A. Hypoxia
B. Hypothermia
C. HbF
D. Increased pH
Arterial O2 content is reduced in one of following ______________?
Arterial O2 content is reduced in one of following ______________?
A. Stagnant hypoxia
B. Anemic hypoxia
C. Histotoxic hypoxia
D. Hypoxic or arterial hypoxia