Carbon dioxide generated in the tissue is carried in venous blood primarily as
1. Dissolved gas in plasma
2. Carbamino hemoglobin
3. Sodium bicarbonate in venous blood
4. Potassium bicarbonate in venous blood
Given below are four statements A-D each with one or two blanks. Select the option which correctly fills up the blanks in two statements.
A. Healthy man can inspire or expire approximately ml of air per minute.
B. Inspiratory reserve volume average ml.
C. Residual volume averages ml.
D. Volume of air accumulated in the lungs at the end of forced inspiration is .
Options :
1. A - (i) 500 ml,
B - (i) 2500 to 3000 ml
2. B - (i) 2500 to 3000 ml,
C - (i) 1000 ml to 1100 ml
3. C - (i) 1000 ml to 1100 ml
D - (i) Vital capacity
4. A - (i) 6000 to 8000 ml
D - (i) Vital capacity + residual volume
Which of the following statement is incorrect with respect to transport of carbon dioxide in blood?
1. | About 20-25 percent of carbon dioxide is carried by haemoglobin in the form of carbamino haemoglobin |
2. | 70 percent of CO is carried in a dissolved states through plasma |
3. | As the blood picks up carbon dioxide from tissue, HCO accumulates inside RBCs of which some move out into the blood plasma and in exchange chloride ions move from plasma into RBCs |
4. | The greatest percentage of carbon dioxide is transported in blood plasma as bicarbonate ions |
How many of the following statements are correct?
a. Normal exhalation during quiet breathing in an active process involving intensive muscle contraction.
b. Air flow during breathing is due to pressure gradient between the lungs and atmospheric air.
c. A specialised centre present in the medulla region of the brain called respiratory rhythm centre is primarily responsible for regulation of respiration,
d. Respiratory rate decreases during fever.
1. One
2. Two
3. Three
4. Four
Vital capacity (VC) can be stated as
1. TV + IRV
2. TV + FRC
3. IRV + FRC
4. IC + ERV
Why the partial pressure of is high at tissue-site?
1. Due to the saturation of with Hb
2. Release of at the tissue site
3. Due to metabolism
4. Due to the dissociation of
'Chemosensitive Area' for regulation of respiration is present on ?
1. Medulla
2. Pons
3. Cerebrum
4. Cerebellum
The amount of air that enters the lungs during normal, restful breathing is called the______.
1. Vital capacity
2. Tidal volume
3. Total lung capacity
4. Expiratory reserve volume
Every 2000 mL of deoxygenated blood delivers approximately, how much mL CO to alveoli?
1. 4 mL
2. 4.2 mL
3. 8 mL
4. 80 mL
By the contraction in radial muscle of diaphragm it become flattened in shape, so, volume of thoracic cavity increases in :-
1. Anterior-posterior axis
2. Dorsal-ventral axis
3. Anterior-lateral axis
4. Dorsal-lateral axis