Select the favorable conditions required for the formation of oxyhemoglobin at the alveoli. 

1. High pO2, high pCO2, less H+, higher temperature

2. Low pO2, low pCO2, more H+, higher temperature

3. High pO2, low pCO2, less H+, lower temperature

4. Low pO2 high pCO2 more H+, higher temperature

Subtopic:  Respiratory System: Transport of Gases |
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Select the correct events that occur during inspiration.

a. Contraction of diaphragm

b Contraction of external inter-costal muscles

c. Pulmonary volume decreases

d.  Intra pulmonary pressure increases

1. (c) and (d)

2. (a), (b) and (d)

3. only (d)

4. (a) and (b) 

Subtopic:  Respiratory System: Pulmonary Ventilation |
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Identify the wrong statement with reference to transport of oxygen :

1. Partial pressure of CO2 can interfere with O2 binding with haemoglobin.

2. Higher H+ concentration in alveoli favours the formation of oxyhaemoglobin.

3. Low pCO2 in alveoli favours the formation of oxyhaemoglobin.

4. Binding of oxygen with haemoglobin is mainly related to partial pressure of O2.

Subtopic:  Respiratory System: Transport of Gases Part 1 | Respiratory System: Transport of Gases |
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The Total Lung Capacity (TLC) is the total volume of air accommodated in the lungs at the end of forced inspiration. This includes :

1. RV; IC (Inspiratory Capacity); EC (Expiratory Capacity); and ERV

2. RV; ERV; IC and EC

3. RV; ERV; VC (Vital Capacity) and FRC (Functional Residual Capacity)

4. RV (Residual Volume); ERV (Expiratory Reserve Volume); TV (Tidal Volume); and IRV (Inspiratory Reserve Volume

Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
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Match the following columns and select the correct option :

        Column - I                              Column - II

(a) Pneumotaxic Centre                   (i) Alveoli

(b) O2 Dissociation curve                (ii) Pons region of the brain

(c) Carbonic  Anhydrase                  (iii) Haemoglobin

(d) Primary site of exchange            (iv) R.B.C. 
     of gases

1. (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)

2. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

3. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)

4. (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)

Subtopic:  Respiratory System: Exchange of Gases | Respiratory System: Regulation of Respiration |
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Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL?

1.  2700 mL

2.  1500 mL

3.  1700 mL

4.  2200 mL

Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
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Select the correct statement.

1. Expiration occurs due to external intercostal muscles.

2. Intrapulmonary pressure is lower than the atmospheric pressure during inspiration.

3. Inspiration occurs when atmospheric pressure is less than intrapulmonary pressure.

4. Expiration is initiated due to contraction of diaphragm.

Subtopic:  Respiratory System: Pulmonary Ventilation |
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The maximum volume of air a person can breathe in after a forced expiration is known as :

1. Expiratory Capacity

2. Vital Capacity

3. Inspiratory Capacity

4. Total Lung Capacity

Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
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Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively?
1. Inflammation of bronchioles; decreased respiratory surface
2. Increased number of bronchioles; increased respiratory surface
3. Increased respiratory surface; inflammation of bronchioles
4. Decreased respiratory surface; inflammation of bronchioles

Subtopic:  Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 |
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Match the items given Column I with those in Column II and select the correct option given below: 
Column I                                   Column II 
a. Tidal volume                          i. 2500-3000 mL 
b. Inspiratory Reserve                ii. 1100-1200 mL volume 
c. Expiratory Reserve                 iii. 500-550 mL volume 
d. Residual volume                    iv. 1000-1100 mL
1. a-iii b-ii c-i d-iv
2. a-iii b-i c-iv d-ii
3. a-i b-iv c-ii d-iii
4. a-iv b-iii c-ii d-i
 
Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
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