338726
The exchange of gases in the alveoli of the lungs takes place by
1 Simple diffusion
2 Osmosis
3 Active transport
4 Passive transport
Explanation:
Gaseous exchange occurs in the alveoli by simple diffusion. The blood flowing past the alveoli is rich in carbon dioxide and very poor in oxygen. The gas molecules naturally flow in the direction of lower concentration through the thin gas exchange membrane, which is only two cells thick.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338727
Which vein contains the oxygenated blood in humans?
1 Cardiac vein
2 Hepatopancreatic
3 Portal vein
4 Pulmonary vein
Explanation:
Pulmonary vein is the only vein in body, which carries oxygenated blood rather than deoxygenated blood. It carries the blood from the lungs to the left auricle of heart. From left auricle, blood goes to the left ventricle, which then distributes that blood all over the body.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338728
Partial pressures (in \(\mathrm{mmHg}\) ) of \(\mathrm{CO}_{2}\) in atomspheric air, alveoli deoxygenated blood, oxygenated blood and tissues are-
1 \(0.3,40,45,40,45\)
2 \(104,40,40,95,159\)
3 \(40,95,40,104,159\)
4 \(40,45,40,45,0.3\)
Explanation:
Partial pressures (in \(\mathrm{mmHg}\) ) of \(\mathrm{CO}_{2}\) in atomspheric air- 0.3 , alveoli-40 deoxygenated blood-45, oxygenated blood-40 and tissues- 45.
338726
The exchange of gases in the alveoli of the lungs takes place by
1 Simple diffusion
2 Osmosis
3 Active transport
4 Passive transport
Explanation:
Gaseous exchange occurs in the alveoli by simple diffusion. The blood flowing past the alveoli is rich in carbon dioxide and very poor in oxygen. The gas molecules naturally flow in the direction of lower concentration through the thin gas exchange membrane, which is only two cells thick.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338727
Which vein contains the oxygenated blood in humans?
1 Cardiac vein
2 Hepatopancreatic
3 Portal vein
4 Pulmonary vein
Explanation:
Pulmonary vein is the only vein in body, which carries oxygenated blood rather than deoxygenated blood. It carries the blood from the lungs to the left auricle of heart. From left auricle, blood goes to the left ventricle, which then distributes that blood all over the body.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338728
Partial pressures (in \(\mathrm{mmHg}\) ) of \(\mathrm{CO}_{2}\) in atomspheric air, alveoli deoxygenated blood, oxygenated blood and tissues are-
1 \(0.3,40,45,40,45\)
2 \(104,40,40,95,159\)
3 \(40,95,40,104,159\)
4 \(40,45,40,45,0.3\)
Explanation:
Partial pressures (in \(\mathrm{mmHg}\) ) of \(\mathrm{CO}_{2}\) in atomspheric air- 0.3 , alveoli-40 deoxygenated blood-45, oxygenated blood-40 and tissues- 45.
338726
The exchange of gases in the alveoli of the lungs takes place by
1 Simple diffusion
2 Osmosis
3 Active transport
4 Passive transport
Explanation:
Gaseous exchange occurs in the alveoli by simple diffusion. The blood flowing past the alveoli is rich in carbon dioxide and very poor in oxygen. The gas molecules naturally flow in the direction of lower concentration through the thin gas exchange membrane, which is only two cells thick.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338727
Which vein contains the oxygenated blood in humans?
1 Cardiac vein
2 Hepatopancreatic
3 Portal vein
4 Pulmonary vein
Explanation:
Pulmonary vein is the only vein in body, which carries oxygenated blood rather than deoxygenated blood. It carries the blood from the lungs to the left auricle of heart. From left auricle, blood goes to the left ventricle, which then distributes that blood all over the body.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338728
Partial pressures (in \(\mathrm{mmHg}\) ) of \(\mathrm{CO}_{2}\) in atomspheric air, alveoli deoxygenated blood, oxygenated blood and tissues are-
1 \(0.3,40,45,40,45\)
2 \(104,40,40,95,159\)
3 \(40,95,40,104,159\)
4 \(40,45,40,45,0.3\)
Explanation:
Partial pressures (in \(\mathrm{mmHg}\) ) of \(\mathrm{CO}_{2}\) in atomspheric air- 0.3 , alveoli-40 deoxygenated blood-45, oxygenated blood-40 and tissues- 45.
