The maximum amount of air that a person can breathe out after a forced inspiration, under normal physiological conditions, would be about:
1. | 1600 ml | 2. | 2300 ml |
3. | 4500 ml | 4. | 5600 ml |
Consider the characters of a respiratory control center in humans:
I. It is located in pons
II. It moderates the functions of respiratory rhythm center
III. Its absence results in an increase in depth of respiration
The respiratory control center is:
1. Pneumotaxic center
2. Apneustic center
3. Chemosensitive zone
4. Dorsal group
Pneumotaxic Centre is present in the
1. forebrain
2. midbrain
3. Hindbrain
4. Diencephalon
Aortic arch and carotid artery receptors cannot recognise changes in
1. CO2 Concentration
2. O2 Concentration
3. H+ ions Concentration
4. All of these
At tissue sites, partial pressure of CO2 is high due to _______ process.
1. Anabolic
2. catabolic
3. Both A and B
4. Oxidative
The formation of Carbonic acid from Carbon dioxide and water has catalyzed the enzyme
1. Carbonic anhydrase
2. Carbonic anhydride
3. Carbonic hydrase
4. Both A and C
In alveoli,
1. pCO2 is high and pO2is low
2. pCO2 is low and pO2 is high
3. pCO2 is low and pO2 low
4. None of the above
pCO2 is high and pO2 is low can be found in
1. alveoli
2. tissues
3. blood
4. heart
More binding of CO2 occurs when pCO2 is _____ and pO2 is ____
1. high, high
2. low, high
3. high, low
4. low, low
The binding of Hb with Carbon dioxide forms
1. Methamoglobin
2. Carbamino-haemoglobin
3. Oxyhaemoglobin
4. none of these