During the breathing cycle, when air is taken in and let out:
Which of the following is not a characteristic of alveoli?
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When blood contains a high percentage of carbon dioxide and a very low percentage of oxygen the breathing stops and the person become unconscious. This condition is known as
The air passing through the nostrils in humans is filtered by:
The actual exchange of gases in a mammal takes place in
Which of the following is the common passage for both digestive and respiratory systems?
The air passage in the respiratory system of humans does not collapse due to presence of:
In the respiratory system, the primary sites of gaseous exchange with blood vessels are:
Like the human body is covered by the skin, lungs are covered by:
Which of the following is not a part of human respiratory system?
The tube like portion present between larynx and bronchi is called:
Oxygen is transported from alveoli to tissues in the form of
In humans, the alternative pathway of respiration where pyruvate is converted into a three- carbon compound called lactic acid is found in:
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5 videos|292 docs|59 tests
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