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प्रश्न
Answer the following question.
How is O2 and CO2 transported in human beings?
उत्तर
Inhaled air is rich in oxygen and is carried to the lungs. The diffusion of oxygen to the blood occurs in the capillaries, in alveoli, where the oxygen combines with the hemoglobin to form oxyhemoglobin. This oxygen-rich blood is taken to the heart, for distribution, via the pulmonary vein. The carbon dioxide moves from the tissues to the plasma and red blood cells which are carried to capillaries in alveoli via the pulmonary artery. Carbon dioxide diffuses out from the capillaries in alveoli. The carbon dioxide rich air is at last expelled from the body during exhalation while breathing.
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संबंधित प्रश्न
Cellular respiration takes place in
(a) Lysosome
(b) Chlorophyll
(c) Mitochondria
(d) Ribosome
What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
In the lungs what substance is taken into the body?
Fill in the following blank with suitable word:
The actual exchange of gases takes place in the ___________ of the lungs.
What type of respiration takes place in human muscles during vigorous physical exercise? Give reason for your answer
State the three common features of all the respiratory organs like skin, gills and lungs.
From where do the aquatic animals and terrestrial animals obtain oxygen for breathing and respiration?
Why do the walls of trachea not collapse when there is less air in it?
How are oxygen and carbon dioxide exchanged in our body during respiration?
Give the main points of difference between respiration in plants and respiration in animals.
An animal in which the oxygenation of blood does not take place in the lungs is:
Match the items in Column I with the ones most appropriate in Column II. Rewrite the matching pairs.
|
Column I |
Column II |
|
(a) Alveoli |
(i) where aerobic respiration takes place |
|
(b) Bronchioles |
(ii) lined with hair |
|
(c) Nasal Chamber |
(iii) diffusion of gases |
|
(d) Bronchi |
(iv) small air tubes |
|
(v) an inverted Y shaped tube |
|
|
(vi) a common passage for food and air |
State one function of the following:
Mitochondria
Give Suitable Explanation for the Following :
Why do you shiver and why do your teeth chatter when it is very cold in winter?
Given below is an overall chemical reaction of a certain process:
C6H12O6 →LacticAcid+2ATP+Heat energy
Name the process.
Given below is an overall chemical reaction of a certain process:
C6H12O6→LacticAcid+2ATP+Heat energy
Is this reaction applicable to animals or to plants or to both animals and plants?
Name the organs that bring about respiration.
Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:
Explain the three pathways of breakdown in living organisms.
List the similarities between aerobic and anaerobic respiration.
