- 1(current)
Q. No.How many statements are correct with respect to the mechanism of breathing?
Select the correct option from the following:
1. Two
2. Three
3. Four
4. Five
| (a) | Inspiration occurs when there is a negative pressure in the lungs with respect to atmospheric pressure. |
| (b) | Lungs do not collapse between breaths and some air always remains in the lungs because there is a negative intrapleural pressure pulling at the lungs walls. |
| (c) | Expiration is initiated due to the contraction of diaphragm. |
| (d) | One can consciously breathe in and breathe out by moving the diaphragm alone, without moving the ribs at all. |
| (e) | The strength of inspiration and expiration can be increased with the help of additional muscles in the abdomen. |
1. Two
2. Three
3. Four
4. Five
Subtopic: Â Respiratory System: Pulmonary Ventilation |
Level 3: 35%-60%
Hints
Read the given statements and select the correct option.
| Statement-A: | One can breathe out air through eustachian tubes by closing both the nose and the mouth. |
| Statement-B: | External inter-costal and abdominal muscles are muscles involved in inspiration under normal breathing. |
| 1. | Both statements A and B are correct |
| 2. | Both statements A and B are incorrect |
| 3. | Only statement A is correct |
| 4. | Only statement B is correct |
Subtopic: Â Respiratory System: Pulmonary Ventilation |
Level 3: 35%-60%
Hints
Given below are two statements:
In the light of above two statements, select the correct option
| Assertion (A): | Normal exhalation during quiet breathing is an active process involving extensive muscle contraction |
| Reason (R): | Passive exhalation results from the elastic recoil of the chest wall and lungs |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Â Respiratory System: Pulmonary Ventilation |
 73%
Level 2: 60%+
Hints
In the process of ventilation, the following occur:
a. pressure in thorax increases
b. volume of thorax increases
c. diaphragm goes down
d. ribcage goes down
Which of these occur during inhalation?
1. a and b only
2. b and c only
3. c and d only
4. a and c only
Subtopic: Â Respiratory System: Pulmonary Ventilation |
 79%
Level 2: 60%+
Hints
Read the following four statements (a-d) and select the option which includes all correct ones only :-
| (a) | Exchange of O2 and CO2 at alveoli and tissue occur by active transport. |
| (b) | Long exposure to industrial dust leads to inflammation leading to fibrosis and thus causing serious lung damage. |
| (c) | EICM and IICM are muscles actively involved in normal and forced breathing respectively. |
| (d) | Spirometer is unable to find out the functional residual capacity and total lung capacity. |
| 1. | b, c and d | 2. | b and d |
| 3. | a, b and d | 4. | a, b, c and d |
Subtopic: Â Respiratory System: Pulmonary Ventilation |Â Respiratory Disorders: Part 2 |
 59%
Level 3: 35%-60%
Hints
- 1(current)
Q. No.
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