InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 301. |
Which is the site of actual diffusion of O2 and C02 between blood and atmospheric air?A. Exchange part of respiratory systemB. Conducting part of respiratory systemC. Respiratory part of respiratory systemD. Both A and C |
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Answer» Correct Answer - D Exchange or respiratory part is the site of actual diffusion of `O_(2)" and "CO_(2)` between blood and atmospheric air. |
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| 302. |
How much `CO_(2)` is present per 100 ml of venous bloodA. 52.1 mlB. 3.7 mlC. 40 mlD. 20 ml |
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Answer» Correct Answer - b Every 100 ml of blood receives an average 3.7 ml of `CO_(2)` from tissues. |
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| 303. |
Breathing invovles two stages (a)___ during which atmospheric air is drawn in and (b)_____ by which the alveolar air is released out. |
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Answer» Correct Answer - a- Inspiration b. Expiration |
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| 304. |
Respiratory process is regulated by certain specialised centres in the brain. One of the following listed centres can reduce the inspiratory duration upon stimulation.A. Medullary inspiratory centreB. Pneumotaxic centreC. Apneustic centreD. Chemosensitive centre |
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Answer» Correct Answer - B Pneumotaxic centre is located in the dorsal part of pons varoli. The function of the pneumotaxic centre is primarily to limit inspiration. |
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| 305. |
Given statement is true or false Statement: Actual site of diffusion of `O_(2) and CO_(2)` between blood and atmospheric air is exchange part. |
| Answer» Correct Answer - 1 | |
| 306. |
As the `P_(CO_(2))` of the venous blood increases theA. blood pH decreasesB. concentration of `HCO_(3)` decreaseC. amount of chloride in the rbcs decreaseD. affinity of the haemoglobin for `O_(2)` increases |
| Answer» Correct Answer - A | |
| 307. |
Gasses diffuse over the respiratory surface because ofA. `po_(2)` is more in alveoli than in bloodB. `pO_(2)` is more in tissues than in bloodC. `pCO_(2)` is more in alveoli than in bloodD. `pCO_(2)` is more in blood than in tissues |
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Answer» Correct Answer - A Gasses diffuse over the respiratory surface because of `pO_(2)` is more in alveoli (104 mm Hg) than in blood (40 mm Hg). |
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| 308. |
Haemoglobin is having maximum affinity withA. `NH_(3)`B. `O_(23)`C. `CO`D. `CO_(2)` |
| Answer» Correct Answer - C | |
| 309. |
Which of these statements about the partial pressure of `CO_(2)`is true ?A. it is higher in the alveoli than in pulmonary arteriesB. it is higer in the systemic arteries than in the tissuesC. it is higher in the systemic veins than in the systemic arteriesD. it is higher in the pulmonary veins than in pulmonary artieries |
| Answer» Correct Answer - C | |
| 310. |
At the tissue site where partial pressure of `CO_(2)` is (a)____ due to (b)____, `CO_(2)` diffuse into blood and form (c)_____ and (d)__ |
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Answer» Correct Answer - a-High b- Catabolism c-`HCO_(3)^(-)` d. `H^+` |
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| 311. |
Partial pressure for oxygen and `CO_(2)` is represented asA. `pO ans pCO`B. `p_(o)` and `p_(co_(2))`C. `pO_(2)` and `pCO_(2)`D. `O_(2)p` and `CO_(2)p` |
| Answer» Correct Answer - C | |
| 312. |
Which of these statements about the partial pressure of `CO_(2)`is true ?A. more in inspired air than in expired airB. more in alveolar air than in expired airC. more in expireed air than in alveolar airD. more in inspired air than in alveolar air |
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Answer» Correct Answer - B The patial pressure of `CO_(2)` in alveolar air 40 mmHg while in expired air it is 32 mmHg |
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| 313. |
Assertion` :-` Major part of `CO_(2)` is transported in the form of sodium bicarbonate. Reason `:-` 0.3 ml of `CO_(2)` is transported per 100ml of blood in dissolved state in plasma of blood.A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)B. If both Assertion & Reason are trye but the reason is not the correct explanation of the assertion , then mark (2)C. If Assertion is true statement but Reason is fakse, then mark (3)D. If both Assertion and Reason are false statements, then mark (4) |
| Answer» Correct Answer - B | |
| 314. |
The alveoli of lungs are lined byA. Simple epitheliumB. Squamous epithelium + tunica media blood vesselC. Cuboidal epitheliumD. Columnar epithelium |
| Answer» Correct Answer - b | |
| 315. |
The exchange of gases in the alveoli of the lungs takes place byA. Simple diffusionB. Active transportC. Passive transportD. Osmosis |
| Answer» Correct Answer - A | |
| 316. |
Reduction in respiratory surface of lungs due to breakdown of partition in the alveoli is known asA. asphyxiaB. bronchitisC. asthmaD. emphysema |
| Answer» Correct Answer - D | |
| 317. |
Breakdown of alveoli of lungs resulting in the reducing surface area for gas exchange is known asA. EmphysemaB. SneezingC. PneumoniaD. Tuberculosis. |
| Answer» Correct Answer - A | |
| 318. |
Which are the three main layers that form the diffusion membrane?A. Thin squamous epithelium of alveoli, basement membrane of bronchioles anf basement substanceB. Thin squamous epithelium of alveoli endothelium of alveolar capillaries and the basement substanceC. Basement substance, cuboidal epithelium of alveoli and stratified epithelium of bronchioleD. Ciliated epithelium of trachea, endothelium of capillaries and basement substance |
| Answer» Correct Answer - A | |
| 319. |
Which of the following statement is incorrect about the transport of gases ?A. About 97% of `O_(2)` is transported by RBCs in the blood.B. About 3% of `O_(2)` is carried in dissolved state in the plasmaC. About 20-25% of `CO_(2)` is transported by RBCs.D. About 70% carbon dioxide is carried in dissolved state in plasma. |
| Answer» Correct Answer - D | |
| 320. |
Diffusion membrane is made up of which of the following layers gtA. Thin squamous epithelium of alveoliB. Basement membraneC. Endothelium of alveolar capillariesD. All of these |
| Answer» Correct Answer - D | |
| 321. |
Assertion: In cockroaches, inspiration is a passive process. Reason: The expansion of abdominal cavity allows the space of expansion of tracheal trunk. As a result, air enter through spiracle.A. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.B. If both Assertion and Reason are true ,but the Reason is not the correct explanation of the Assertion.C. If Assertion is true, but Reason is falseD. If both Assertion and Reason are false. |
| Answer» Correct Answer - A | |
| 322. |
Assertion: Oxidation of nutrients releases bond energy Reason : Oxidation of nutrients is done by using molecular oxygen.A. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.B. If both Assertion and Reason are true ,but the Reason is not the correct explanation of the Assertion.C. If Assertion is true, but Reason is falseD. If both Assertion and Reason are false. |
| Answer» Correct Answer - B | |
| 323. |
What is the partial pressure of oxygen and carbon dioxide in atmospheric air ?A. `pO_(2)` 159 mm hg, `pCO_(2)` 0.3 mm HgB. `pO_(2)` 104 mm Hg, `pCO_(2)` 40 mm HgC. `pO_(2)` 40 mm Hg, `pCO_(2)` 45 mm HgD. `pO_(2)` 95 mm Hg, `pCO_(2)` 40 mm Hg |
| Answer» Correct Answer - A | |
| 324. |
Assertion: The diffusion of carbon dioxide is 20 times faster then oxygen. Reason: It is due to difference in partial pressure as well as solubility of diffusing gases .A. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.B. If both Assertion and Reason are true ,but the Reason is not the correct explanation of the Assertion.C. If Assertion is true, but Reason is falseD. If both Assertion and Reason are false. |
| Answer» Correct Answer - A | |
| 325. |
What is the partial pressure of oxygen and carbon dioxide in atmospheric air ?A. `p_(O_(2))` 159 mm Hg, `p_(CO_(2))`0.3 mm HgB. `p_(O_(2))` 104 mm Hg, `p_(CO_(2))`40 mm HgC. `p_(O_(2))` 40 mm Hg, `p_(CO_(2))`45 mm HgD. `p_(O_(2))` 95 mm Hg, `p_(CO_(2))`40 mm Hg |
| Answer» Correct Answer - A | |
| 326. |
Assertion: In cockroaches, inspiration is a passive process. Reason: The expansion of abdominal cavity allows the space of expansion of tracheal trunk. As a result, air enter through spiracle.A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)B. If both Assertion & Reason are trye but the reason is not the correct explanation of the assertion , then mark (2)C. If Assertion is true statement but Reason is fakse, then mark (3)D. If both Assertion and Reason are false statements, then mark (4) |
| Answer» Correct Answer - A | |
| 327. |
Assertion: The diffusion of carbon dioxide is 20 times faster then oxygen. Reason: It is due to difference in partial pressure as well as solubility of diffusing gases .A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)B. If both Assertion & Reason are trye but the reason is not the correct explanation of the assertion , then mark (2)C. If Assertion is true statement but Reason is fakse, then mark (3)D. If both Assertion and Reason are false statements, then mark (4) |
| Answer» Correct Answer - A | |
| 328. |
The `CO_(2)` content by volume, in the atmospheric air is aboutA. `3.34%`B. `4%`C. `0.0314%`D. `0.34%` |
| Answer» Correct Answer - C | |
| 329. |
Assertion : Most fish when out of water, die of suffocation. Reason : Atmospheric air contains far less oxygen content than the dissolved oxygen in water. |
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Answer» Correct Answer - c Although atmospheric air constains air contains far more oxygen content than the water (air contain 21 % oxygen and water contains 0.5-0.9% oxygen by volume depending on the termperature) , still most fish when out of water die of suffocation due to lack of oxygen . when fish is taken out of water the gills stick together thereby reducing the surface area. Reduced surface aea lower gas exhange so death ensues. |
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| 330. |
Why is `CO_(2)` gas transferred from alveoil the atmospheric air ? |
| Answer» It is because the `pCO_(2)` in alveoli is higher, i.e., 40 mm Hg than in atmospheric air , i.e., 0.3 mm Hg. | |
| 331. |
The `CO_(2)` content by volume, in the atmospheric air is aboutA. `3.34%`B. `4%`C. `0.0314%`D. `2.1%` |
| Answer» Correct Answer - C | |
| 332. |
Among the following the partial pressure of oxygen is maximum inA. alveolar airB. aterial bloodC. venous bloodD. expired air. |
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Answer» Correct Answer - D The particle pressure of `O_(2)` in the expired air is `116 mm` Hg. In alveolar air it is `104 mm` Hg, in arterial blood it is `95 mm` Hg and in venous blood it is `40 mm` Hg. |
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| 333. |
Lungs are enclosed inA. PeritoneumB. PerichondirumC. PericardiumD. Pleural membranes |
| Answer» Correct Answer - D | |
| 334. |
When a person brathes air through a tube directly into the trachea (tracheotomy) it may lead to serious lung crushing and infection due toA. Cooling effectB. Drying effectC. Non filtering effectD. All of these |
| Answer» Correct Answer - D | |
| 335. |
Diaphragm is a dome-shaped muscular structure which separatesA. Coelomic cavity from pelvic cavityB. Pleural cavity from thoracic cavityC. Thoracic cavity from abdominal cavityD. Pelvic cavity frome abdominal cavity |
| Answer» Correct Answer - C | |
| 336. |
Trachea is lined with incomplete rings ofA. fibrous cartilageB. calcified crtilageC. elastic cartilageD. hyalane caritlage |
| Answer» Correct Answer - D | |
| 337. |
If a person exhales out forcefully by applying all his efforts, what will be the pulmonary volume inhaled by him immediately under normal condition without applying any extra effort ?A. TV+IRVB. TV onlyC. TV+ERVD. TV+IRV+ERV |
| Answer» Correct Answer - C | |
| 338. |
Hiccups can be best described asA. forceful sudden expirationB. jerky incomplete inspirationC. vibration of the soft palate during breathingD. sigh of indigestion |
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Answer» Correct Answer - B Hiccups is the spamodic cntraction of the diaphragm followed by a spasmodic closure of the glottis, i.e, a sharp inspiratory sound. Stimulus is usually irratiation of sensory nerve endings of digestive tract. |
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| 339. |
The `p_(CO_(2))` level in the expired air under normal condition is approximatelyA. 46 mm of HgB. 100 mm of HgC. 32 mm of HgD. 116 mm of Hg |
| Answer» Correct Answer - C | |
| 340. |
Amount of `CO_(2)` in expired air is aboutA. 0.0004B. 0.0003C. 0.045D. 0.021 |
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Answer» Correct Answer - C Amount of `CO_(2)` in expired air is 4.5 % . The air we breathe in contains about 0.05% `CO_(2)`. The air we beathe out contains about 4% `CO_(2)`. In other word, exhalled air contais about 100 times the concentration of `CO_(2)` that inhaled air does. |
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| 341. |
Which of the following is a respiratory disease ?A. PolioB. ArthritisC. asthmaD. Cancer |
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Answer» Correct Answer - C Due to decrease in temperature and rise in PH, the curve , becomes more steep, while the rise in temperature, and fall in pH , shifts the curve to the right. The steep rise of the curve indicates the high affinity of haemoglobin for oxygen. |
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| 342. |
Between breaths, the intrapleural pressure is approximately ……. Mm Hg less than atmospheric pressure.A. 1B. 4C. 8D. 10 |
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Answer» Correct Answer - B Between breaths, the inerpleural pressure is approximately 4 mm Hg less than atmospheic pressures. |
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| 343. |
The air which is taken in or given out during a single breath is known asA. Residual airB. Vital airC. Tidal airD. All of these |
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Answer» Correct Answer - c tidal volume is the volume of air inspired or expired with each beath . This is about 500 ml in an adult person. |
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| 344. |
Between breaths the interpleural pressure is approximately ...... mm Hg less than atmospheric pressureA. 1B. 4C. 8D. 10 |
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Answer» Correct Answer - B Between breaths the interpleural presssure is approximately 4 mm Hg less than atmospheric pressure. |
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| 345. |
the partial pressure of oxygen in the alveolar air isA. 45 mm HgB. 125 mm HgC. 100 mm HgD. 104 mm Hg |
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Answer» Correct Answer - D Partial pressure of oxygen in alveolar air is 104 mm Hg. |
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| 346. |
the partial pressure of oxygen in the alveolar air isA. 104 mmHgB. 120 mmHgC. 40 mmHgD. 90 mmHg |
| Answer» Correct Answer - A | |
| 347. |
The alveolar ventilation is theA. amount of air available for gas exchange in the lungsB. vital capacity divided by the respiratory rateC. tidal volume times the respiratory rateD. minute ventialation plus the dead space |
| Answer» Correct Answer - A | |
| 348. |
Dead space air in man isA. 500 mLB. 150 mLC. 250 mLD. 1.5 mL |
| Answer» Correct Answer - B | |
| 349. |
Dead space air in man isA. 1.5 lB. 500 mlC. 0.21D. 150ml |
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Answer» Correct Answer - D Volume of air which remain in conducting pathway but not available for gas exchange is anatomical dead space. |
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| 350. |
Dead space isA. respiratory tractB. nasal chambers onlyC. alveolar spaceD. pleural cavity |
| Answer» Correct Answer - A | |