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प्रश्न
Where does the blood absorb oxygen in the human body?
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उत्तर
Blood absorbs oxygen in the lungs. The exchange of gases takes place in the alveoli of lungs and the blood present in the blood capillaries surrounding the alveoli.
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संबंधित प्रश्न
What would be the consequences of a deficiency of haemoglobin in our bodies?
Explain why, when air is taken in and let out during breathing, the lungs always contain a residual volume of air.
Why do fishes die when taken out of water?
Which of the following increases in muscle cells when they are lacking in oxygen?
During the deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in:
One of the following animals does not use tracheae as the respiratory organs. This animal is:
The breathing and respiration in woody stem of a plant takes place through:
Which of the following is most likely to have a much higher breathing rate?
Consider the following chemical reactions which take place in different organisms/tissues under various conditions:
(i) Glucose → Respiration ">Ethanol + Carbon dioxide + Energy
(ii) Glucose→ Respiration ">Carbon dioxide + Water + Energy
(iii) Glucose → Respiration "> Lactic acid + Energy
(a) Name one organism which respires according to equation (i) above.
(b) Name one organism which respires according to equation (ii) above.
(c) When and where does respiration represented by equation (iii) above take place?
(d) Which equation/equations represent aerobic respiration?
(e) Which equation/equations represent anaerobic respiration?
(f) Which of the above reactions produces the maximum amount of energy?
Veins and arteries carry blood. Which of these carry blood away from the heart?
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(b) Name (i) artery R, and (ii) vein T.
(c) What are tiny filters S known as?
(d) Name (i) liquid U (ii) structure V (iii) tubes W, and (iv) tube X.
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Trachea, Ciliated epithelium, Mucous, Diffusion
What is the normal percentage composition of gases in inspired and expired air respectively?
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Which of the following indicates the shift of oxyhaemoglobin dissociation curve due to change in ppC02 in blood?
On a very cold morning, Boojho and Paheli were talking with each other as they walked down to their school. They observed that the air coming out of their mouth looked like smoke. They were amused and wondered how it happened. Help them find the answer.
With the reference to four gases CO2, CO, Cl2 and O2, which one of the options in the table is correct?
Match the correct answers with the type of respiration and respiratory substances.
| Respiration | Types of Substrates |
| A. Floating respiration | I. Proteins |
| B. Cytoplasmic respiration | II. Glucose |
| C. Protoplasmic respiration | III. Carbohydrates and fats |
Visit a doctor. Find out about artificial respiration. Ask the doctor:
- When does a person need artificial respiration?
- Does the person need to be kept on artificial respiration temporarily or permanently?
- From where can the person get supply of oxygen for artificial respiration?
