- 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.
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
| 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 |
 51%
Level 3: 35%-60%
Hints
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
In the light of above two statements, select the correct option
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
Reason (R): Passive exhalation results from the elastic recoil of the chest wall and lungs
In the light of above two statements, select the correct option
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 |
 75%
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 |
 85%
Level 1: 80%+
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 |
 60%
Level 2: 60%+
Hints
- 1(current)
Q. No.
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