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प्रश्न
Describe how the exchange of oxygen and carbon dioxide gases takes place in the lungs.
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उत्तर
At the time of respiration, the external air reaches up to the alveoli in the lungs. The oxygen in the air enters the blood vessels, which surround the alveoli. Through the network of blood vessels, oxygen is supplied to the entire body. At the same time, carbon dioxide is brought by the circulating blood into the alveoli. From here, carbon dioxide is given out of the body through exhalation. In this way, the exchange of oxygen and carbon dioxide gases takes place in the alveoli of the lungs.
संबंधित प्रश्न
Differentiate between LUBB and DUP (names of the valves whose closure produce the sound)
Name the following:
The valve present in between the chambers on the right side of the human heart.
Find the odd one out.
What is meant by the term 'double circulation' of blood in mammals? What is diastole?
Fill in the blanks with suitable words given below:
The liquid part of coagulated blood is known as ______.
Name the three kinds of blood vessels found in human beings. With the help of suitable diagrams, differentiate between them.
What is the Rh-factor?
The stomach is like a ______.
Thin tube-like structures which are the component of circulatory system are called blood vessels.
______ WBCs are present per mm3 of blood.
