Tiêu đề BREATHING & EXCHANGE OF GASES.pdf ✅

Breathing and Exchange of Gases  Digital www.allendigital.in [ 87 ] 1. The function of tracheal cilia is to (1) Pass mucus out (2) Pass mucus in (3) Pass air out (4) Pass air in 2. Which of the following prevents collapsing of Trachea (1) Muscles (2) Diaphragm (3) Ribs (4) Cartilaginous rings 3. Simplest respiratory organ is : (1) gills (2) contractile vacuole (3) skin (4) lungs 4. Tracheal rings are :– (1) Complete (2) Incomplete (3) Dorsally incomplete (4) Lateral incomplete 5. Which one of the following has the smallest diameter ? (1) Right primary bronchus (2) Secondary bronchi (3) Trachea (4) Respiratory bronchioles 6. Match the columns Column I Column II (a) Larynx (p) Lid of glottis (b) Trachea (q) Air Sac (c) Alveoli (r) Voice Box (d) Epiglottis (s) Wind Pipe (t) Common Passage (1) a—r, b—s, c—q, d—p (2) a—t, b—s, c—p, d—q (3) a—r, b—s, c—q, d—t (4) a—r, b—t, c—q, d—p 7. Adam's Apple represents (1) Arytenoid cartilage of larynx (2) Cricoid cartilage of larynx (3) Thyroid cartilage of larynx (4) All the above 8. Inflammation of the lung covering causing severe chest pain is (1) Emphysema (2) Pleurisy (3 ) Asphyxia (4) Hypoxia 9. Which of the following is not a part of respiratory tract? (1) Nasal chamber (2) Oesophagus (3) Pharynx (4) Trachea 10. Residual air mostly occurs in (1) Alveoli (2) Bronchus (3) Nostrils (4) Trachea 11. The epithelium of respiratory bronchioles is:- (1) Pseudostratified columnar (2) Simple squamous (3) Pseudostratified and sensory (4) Cuboidal and columnar 12. ''Epiglottis'' is made up by :- (1) Elastic cartilage (2) Fibrous cartilage (3) Hyaline cartilage (4) Bony structure 13. Air is breathed through (1) Trachea → lungs → larynx → pharynx → alveoli (2) Nose → larynx → pharynx → bronchus → alveoli → bronchioles (3) Nostrils → pharynx → larynx → trachea → bronchi → bronchioles → alveoli (4) Nose → trachea → larynx → bronchi → pharynx → alveoli 14. Lungs are covered by (1) Perichondrium (2) Pleural sac (3) Pericardium (4) Peristomium 15. Which one of the following statement is correct? (1) Chest expands because air enters into the lungs (2) Air enters into the lungs because chest expands (3) The muscles of the diaphragm contracts because air enters into the lungs (4) All of the above statements are correct 16. After deep inspiration, capacity of maximum expiration of lung is called :- (1) Total lung capacity (2) Functional residual capacity (3) Vital capacity (4) Inspiratory capacity Exercise - I
NEET : Biology [ 88 ] www.allendigital.in  Digital 17. Which statement is correct ? (1) Pulmonary ventilation is equal to alveolar ventilation. (2) Pulmonary ventilation is less than alveolar ventilation. (3) Alveolar ventilation is more than Pulmonary ventilation. (4) Alveolar ventilation is less than Pulmonary ventilation. 18. About 1500 ml of air left in lungs is called (1) Tidal volume (2) Inspiratory reserve volume (3) Residual volume (4) Vital capacity 19. At high altitude, RBC of human blood will (1) Increase in number (2) Decrease in number (3) Decrease in size (4) Increase in size 20. Which one has the lowest value? (1) Tidal volume (2) Vital capacity (3) Inspiratory reserve volume (4) Expiratory reserve volume 21. Volume of air inspired or expired with each normal breath is known as (1) Inspiratory capacity (2) Total lung capacity (3) Tidal volume (4) Residual volume 22. Total lung capacity is (1) One lit (2) 3 lit (3) 6 lit (4) 8 lit 23. Air that remains in lung after most powerful expiration is (1) Inspiratory air (2) Dead space air (3) Tidal air (4) Residual air 24. During normal respiration without any effort the volume of air inspired or expired is called (1) Tidal volume (2) Inspiratory volume (3) Residual volume (4) Expiratory reserve volume 25. Total lung capacity is :- (1) total volume of air accommodated in lungs at the end of forced inspiration (2) RV + ERV + TV + IRV (3) vital capacity + residual volume (4) All of the above 26. Which instrument helps in clinical assessment of pulmonary volumes? (1) Sphygmomanometer (2) Stethoscope (3) Spirometer (4) Electrocardiograph 27. Volume of air remains in the lungs after normal expiration is (1) ERV + RV (2) IRV + RV (3) RV + IRV + ERV (4) TV 28. Which of the following volume is not included in vital capacity? (1) ERV (2) TV (3) IRV (4) RV 29. The Upper region of Pharynx in human is called :- (1) Oropharynx (2) Nasopharynx (3) Laryngopharynx (4) None of these 30. What is correct ? (1) Pulmonary ventilation is equal to alveolar ventilation. (2) Alveolar ventilation is less than pulmonary ventilation. (3) Alveolar ventilation is more than pulmonary ventilation. (4) Both are variable. 31. Similarity between the trachea of cockroach and man is that (1) Both are paired and branched (2) Ciliated epithelium is present in both (3) Walls of both can not be deformed/non collapsible walls (4) In both head originates from pharynx. 32. Friction on the lungs surface reduces by (1) double layered pleura (2) single layered pleura (3) ribs covering lungs (4) mucous membrane surrounding the lungs. 33. In lungs, air is separated from venous blood by- (1) Squamous epithelium + tunica externa of blood vessel (2) Squamous epithelium + endothelium of blood vessel (3) Transitional epithelium + tunica media of blood vessel (4) Columnar epithelium + 3 layered wall of blood vessel.
Breathing and Exchange of Gases  Digital www.allendigital.in [ 89 ] 34. In lung, gaseous exchange is done by :- (1) Simple diffusion (2) Active transport (3) Passive transport (4) facilitated diffusion 35. Which of the following statements is not true? (1) The partial pressure of O2 in deoxygenated blood is 40 mm Hg. (2) The partial pressure of O2 in oxygenated blood is 95 mm Hg (3) The partial pressure of O2 in alveolar air is 104 mm Hg (4) The partial pressure of CO2 in alveolar air is 45 mm Hg 36. Partial pressure of oxygen in alveoli, atmospheric air and tissue will be (1) 40, 159, 45 (2) 40, 0.3, 45 (3) 104, 159, 40 (4) 104, 0.3, 45 37. What will be the PO2 and PCO2 in the atmospheric air compared to those in the alveolar air? (1) PO2 lesser, PCO2 higher (2) PO2 higher, PCO2 lesser (3) PO2 higher, PCO2 higher (4) PO2 lesser, PCO2 lesser 38. Partial pressure of CO2 is higher :- (1) At alveolar level (2) At tissue level (3) In atmosphere (4) In oxygenated blood 39. In the given diagram, identify what is depicted by A, B and C. Choose the correct option. (1) A-Air going out from lungs, B-Ribs and sternum relaxed, C-volume of thorax increased (2) A-Air entering lungs, B-Ribs and sternum relaxed, C-volume of thorax increased (3) A-Air entering lungs, B-Ribs and sternum raised, C-volume of thorax increased (4) A -Air going out from lungs, B-Ribs and sternum relaxed, C-volume of thorax decreased 40. Almost same pO2 in humans is found in (1) alveoli and tissues (2) oxygenated blood and deoxygenated blood (3) alveoli and oxygenated blood (4) alveoli and deoxygenated blood 41. Exchange of gases in lung alveoli occurs through (1) Active transport (2) Osmosis (3) Simple diffusion (4) Passive transport 42. Arrange the following in the order if increasing volume (i) Tidal volume (ii) Residual volume (iii) Expiratory reserve volume (iv) Vital capacity (1) (i) < (ii) < (iii) < (iv) (2) (i) < (iii) < (ii) < (iv) (3) (i) < (iv) < (iii) < (ii) (4) (i) < (iv) < (ii) < (iii) 43. Under normal condition 100 ml blood deliver _____ to tissue. (1) 4 ml O2 (2) 10 ml O2 (3) 5 ml O2 (4) 25 ml O2 44. Haldane effect is due to (1) CO2 (2) Lactic acid (3) pH (4) Oxyheamoglobin 45. What percentage of CO2 flows in blood in form of bicarbonates? (1) 7% (2) 23% (3) 50% (4) 70% 46. Effect of CO2 concentration on dissociation of oxyhaemoglobin is called (1) Bohr's effect (2) Haldane effect (3) Hamburger effect (4) Root effect 47. Chloride shift for the transport of (1) O2 (2) CO2 (3) CO (4) O3 48. Exchange of bicarbonates and chloride ions between RBC and plasma is called:- (1) Chloride shift. (2) Bohr's effect. (3) Haldane's effect. (4) Intra cellular respiration. A B Rib cage C Diaphragm contracted
NEET : Biology [ 90 ] www.allendigital.in  Digital 49. Determination of oxygen carried by haemoglobin is done by (1) pH (2) Partial pressure of oxygen (3) Partial pressure of carbon dioxide (4) All the above 50. For proper transport of O2 and CO2 blood should be (1) Slightly acidic (2) Strongly acidic (3) Strongly alkaline (4) Slightly alkaline 51. What would happen when blood is acidic? (1) Binding of oxygen with haemoglobin increases (2) Red blood corpuscles are formed in higher number (3) Binding of oxygen with haemoglobin decreases (4) There is no change in oxygen binding nor number of RBC 52. The chloride shift is movement of Cl– (1) From plasma to RBC (2) From WBC to plasma (3) From RBC to plasma (4) From plasma to WBC 53. Chloride shift occurs in respond to : (1) H+ (2) K+ (3) – HCO3 (4) Na+ 54. What happen to the O2 dissociation curve of Hb if pH is decreased ? (1) shift to left (2) shift to right (3) remain unchanged (4) will oscillate erratically 55. Dissociation curve shifts to the right when:- (1) CO2 concentration decreases (2) CO2 concentration increases (3) O2 concentration increases (4) H+ concentration decreases 56. Oxyhaemoglobin acts as (1) Alkali (2) Acid (3) Neutral (4) Buffer 57. The oxygen- Haemoglobin dissociation curve will show a right shift in case of :- (1) Less H+ concentration (2) High partial pressure of O2 (3) Low partial pressure of CO2 (4) High 2,3, B.P.G. 58. Which of the following conditions are found in the alveoli of lungs : I. high PO2 II. low PCO2 III. high PCO2 IV. low PO2 V. low H+ VI. High H+ Choose the correct option. (1) I, III and V (2) III, IV and VI (3) I, IV and VI (4) I, II and V 59. Binding of CO2 to oxyhaemoglobin occurs when (1) pCO2 is high and pO2 is less in tissue (2) pCO2 is low and pO2 is high in tissue (3) pCO2 is low and pO2 is low in tissue (4) pCO2 is high and pO2 is high in tissue 60. In Bohr's effect curve shift to right when :- (1) pCO2 decreases and p50 O2 increases (2) pCO2 increases and p50 O2 decreases (3) pCO2 increases and p50 O2 increases (4) pCO2 increases and p50 O2 decreases and pH increases 61. In which three forms CO2 is transported by blood (1) As a solution, Carbamino compounds, bicarbonates (2) As a solution, Carbamino proteins, KHCO3 (3) As a solution, Carbamino haemoglobin, NaHCO3 (4) As a solution, Carbamino compound, H2CO3 62. H. Hb is (1) H2b (2) Heavy hydrogen bond (3) Reduced bromide (4) Haemoglobin acid 63. The human ribs (1) Are accessory respiratory organs (2) Do not help in breathing (3) Are main respiratory organs (4) Are not respiratory organs 64. During transport of CO2 blood does not become acidic due to (1) Neutralisation of H2CO3 by Na2CO3 (2) Absorption by leucocytes (3) Blood buffers (4) Non-accumulation