Regular Exam 01, Penta 04 (Radius)

1. Not a part of respiratory unit-

Respiratory bronchiole

Alveolar ducts

Acinus

Alveolar sac

2. Which one is not synthesized or stored and released into the blood by lungs-

Prostaglandins

Histamine

Kallikrein

Bradykinin

3. Function of surfactant doesn't include-

It prevents the collapse of lung

Helps to expand the lungs of the new born

Stabilizes the size of alveoli

Decreases lung compliance

5. Which factor reduces vital capacity -

Upright posture

Surface area

Young age

Pregnancy

6. Factor that reduces gaseous transport across the respiratory membrane-

Thickness of the membrane

Surface area of the membrane

Diffusion co-efficient of the gas

Pressure difference of gas between two sides of the membrane

7. ___% O2 is carried in dissolved state.

8. Factor shifting the O2-Hb curve to left-

Increased pH

Increased CO2 concentration

Increased blood temperature

Increased concentrations of 2,3-bisphosphoglycerate (2,3-BPG)

9. Normal P50 value-

50 mmHg

26 mmHg

30 mmHg

89mmHg

10. Pneumotaxic centre is present in -

Upper pons

Lower pons

Ventral medulla

Dorsal medulla

11. CO poisoning is an example of -

Hypoxic hypoxia

Anemic hypoxia

Stagnant hypoxia

Histotoxic hypoxia

12. Transpulmonary pressure =?

Intra-alveolar pressure - Intrapleural pressure

Intra-alveolar preesure + Intrapleural pressure

Intra-alveolar x Intrapleural pressure

Intrapleural pressure- Intra-alveolar pressure

13. V/Q > 1 means -

Physiological dead space

Physiological Shunt

Anatomical Shunt

All

14. Binding of O2 with hemoglobin tends to displace CO2 from the blood. This effect is called _ effect.

Bohr

Haldane

Hering-Breuer

Jones

15. PO2 in the alveoli __

104 mmHg

94 mmHg

45 mmHg

40 mmHg

16. Not a characteristic of O2- Hb dissociation curve -

It is sigmoid (S) shaped

It begins from 'zero' point

When PO2 is above100 mm Hg, the curve is almost flat

It is irreversible

17. Alveolar ventilation =

Respiratory rate × ( tidal volume - dead space volume)

Respiratory rate × tidal volume

Respiratory rate × Dead space volum

None

18. Dead Space volume-

150 ml

500 ml

350 ml

1 L

19. Not a lung function test-

Bronchography

Ventilation perfusion ratio

Airway tolerance test

Pneumograph

20. Events during expiration don't include-

There is a rise in venous return to the right heart

There is a reduction in the output of the right heart

Blood is squeezed out of the lungs

There is a rise in the venous return to the left heart

21. In chloride shift which ion enters plasma-

HCO3-

Cl-

H+

Hb-

22. False about peripheral chemoreceptor -

Location: Carotid body and aortic body

Sensitive to high PO2

Sensitive to high PCO2

Stimulated by high H+ concentration

23. Which one is not usually increased during exercise-

Rate and depth of respiration

Tidal volume

Pulmonary blood flow

Arterial pH

24. Not an example of ischemic hypoxia-

CCF

Hemorrhage

Shock

Pneumonia

25. Factors preventing lung from collapse don't include -

Positive intrapleural pressure

Residual volume of air in the lungs

Interdependence between adjacent alveoli

Size of alveoli

Regular Exam 01, Penta 04 (Radius)

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