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प्रश्न
Give the functions of the following:
Lecithin covering
उत्तर
Lecithin covering = It lowers the surface tension and keeps the alveoli open.
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संबंधित प्रश्न
Draw a neat and labelled diagram.
Respiratory system
Name the body structure concerned with the given functional activity:
Helps to increase the volume of the chest cavity lengthwise.
Under what conditions would the breathing rate increase?
With regard to the respiratory system and the process of respiration in man, answer the following question:
Briefly describe how the above mentioned muscles help in the inspiration of air.
Answer briefly the following:
Name the agency which transports oxygen to all parts of the body.
Describe in brief the function of ribs and diaphragm in breathing.
Name the following:
Respiratory process in which oxygen is not utilized.
Write true or false for the following statement. Rewrite the false statement correctly.
The oxidation of food to release energy and water is called breathing.
Write true or false for the following statement. Rewrite the false statement correctly.
The microscopic air sacs present in the lungs are called bronchi.
Define cutaneous respiration
The pharynx opens into trachea through an opening called ______ guarded by a cartilaginous flap called ______.
____________ prevents the entry of food into respiratory tract.
A biochemical compound that readily combines with oxygen and distributes it throughout the human body is ____________.
What is the primary organ of the respiratory system?
Arrange in the correct sequence
Trachea → Bronchi → Pharynx → Lungs → Larynx → Nasal cavity → Nostrils → Bronchiole → Alveolus
Match the following
| i. | Alveoli | a. | Yeast |
| ii. | Ethanol | b. | Gaseous exchange |
| iii. | Diffusion | c. | Amino acids |
| iv. | Protein | d. | Perfume |
Which of the following statements is incorrect regarding respiratory system?
For completion of respiration process, write the given steps in sequential manner
- Diffusion of gases (O2 and CO2) across alveolar membrane.
- Transport of gases by blood.
- Utilisation of O2 by the cells for catabolic reactions and resultant release of CO2.
- Pulmonary ventilation by which atmospheric air is drawn in and CO2 rich alveolar air is released out.
- Diffusion of O2 and CO2 between blood and tissues.
Sketch and label Human Respiratory system.
