Breathing and Gas Exchange Quiz

Given below are two statements. Statement I: The lungs are situated in the thoracic chamber Statement II: The thoracic chamber constitutes dorsal the vertebral column, ventral the sternum, lateral by the ribs. In the light of the above statements, choose the most appropriate answer from the options given below.

• Statement I is correct but Statement II is incorrect.

• Statement I is incorrect but Statement II is correct.

• Both Statement I and Statement II are correct.

• Both Statement I and Statement II are incorrect.

Given below are two statements. Statement I: During swallowing of food, glottis can be covered by a thin muscular flap called epiglottis Statement II: The branching network of bronchioles and alveoli comprise the lungs In the light of the above statements, choose the most appropriate answer from the options given below.

• Statement I is correct but Statement II is incorrect.

• Statement I is incorrect but Statement II is correct.

• Both Statement I and Statement II are correct.

• Both Statement I and Statement II are incorrect.

Assertion(A): It is important that lungs are situated in an air tight chamber Reason(R): human can’t directly alter pulmonary volume

• Both Assertion (A) and Reason (R) are true, and Reason (R) is a correct explanation of Assertion (A).

• Both Assertion (A) and Reason (R) are true, but Reason (R) is not a correct explanation of Assertion (A).

• Assertion (A) is true, and Reason (R) is false.

• Assertion (A) is false, and Reason (R) is true.

Given below are two statements. Statement I: The part starting with the external nostrils up to the terminal bronchioles constitute the conducting part Statement II: The conducting part transports the atmospheric air to the alveoli, clears it from foreign particles, humidifies and also brings the air to body temperature.

• Statement I is correct but Statement II is incorrect.

• Statement I is incorrect but Statement II is correct.

• Both Statement I and Statement II are correct.

• Both Statement I and Statement II are incorrect.

Statement-I: The first step in respiration is breathing. Statement-II: Inspiration and expiration are carried out by creating pressure gradients between the atmosphere and the alveoli.

• Statement I and Statement II both are correct.

• Statement I is correct, but Statement II is incorrect.

• Statement I is incorrect, but Statement II is correct.

• Statement I and Statement II both are incorrect.

Statement-I: Lungs are covered by a double layered pleura. Statement-II: Alveoli are irregular-walled, and vascularised, bag-like structures.

• Statement I and Statement II both are correct.

• Statement I is correct, but Statement II is incorrect.

• Statement I is incorrect, but Statement II is correct.

• Statement I and Statement II both are incorrect.

Statement-I: Relaxation of the diaphragm and the external inter-costal muscles reduces the thoracic volume. Statement-II: An increase in pulmonary volume increases the intra-pulmonary pressure more than the atmospheric pressure.

• Statement I and Statement II both are correct.

• Statement I is correct, but Statement II is incorrect.

• Statement I is incorrect, but Statement II is correct.

• Statement I and Statement II both are incorrect.

Assertion (A): The lungs do not collapse even after forceful exhalation Reason (R): residual volume is the amount of air left in the lungs even after normal exhalation

• Both Assertion (A) and Reason (R) are the true, and Reason (R) is a correct explanation of Assertion (A).

• Both Assertion (A) and Reason (R) are the true, but Reason (R) is not a correct explanation of Assertion (A).

• Assertion (A) is true, and Reason (R) is false.

• Assertion (A) is false, and Reason (R) is true.

Statement-I: The partial pressure of gases, solubility, and the thickness of diffusion membrane are essential factors for exchange of gases Statement-II: All the factors in our body are favourable for diffusion of O2 from tissue to alveoli and that of CO2 from alveoli to tissue.

• Statement I and Statement II both are correct.

• Statement I is correct, but Statement II is incorrect.

• Statement I is incorrect, but Statement II is correct.

• Statement I and Statement II both are incorrect.

Statement-I: During normal exhalation diaphragm and EICM relaxes Statement-II: Relaxation of diaphragm and EICM decreases the volume of thoracic chamber dorsoventrally