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Medical Science Mcqs 5254 MCQs [All-Courses]

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Medical Science is the study of human health, diseases, prevention, and treatment, focusing on diagnosis, patient care, and medical research to improve healthcare outcomes.

All Topics  5254

Bronchial circulation is associated with__________________?

A Air conditioning
B Drug absorption
C Gaseous exchange
D Reserve volume
Correct Answer: Gaseous exchange

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
Correct Answer: is inversely related to lung compliance

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
Correct Answer: Increased concentration of oxygen

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
Correct Answer: Increase in partial pressure of CO2

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
Correct Answer: It increases surface tension

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
Correct Answer: Bohr effect

Ventilation perfusion ratio is maximum in_______________?

A Base of lung
B Apex of lung
C Posterior lobe of lung
D Middle lobe of lung
Correct Answer: Apex of lung

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
Correct Answer: Tidal volume

Oxygen affinity decreases in_________________?

A Hypoxia
B Hypothermia
C HbF
D Increased pH
Correct Answer: Hypoxia

Arterial O2 content is reduced in one of following ______________?

A Stagnant hypoxia
B Anemic hypoxia
C Histotoxic hypoxia
D Hypoxic or arterial hypoxia
Correct Answer: Anemic hypoxia
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