Advertisements
Advertisements
प्रश्न
How is the respiratory passage kept free of dust particles?
उत्तर
The nasal cavity is lined by ciliated epithelium and mucous glands. The mucous glands secrete mucous. The ciliated epithelium is present on the entire lining of larynx, trachea, bronchi and bronchioles. The constant motion of cilia and mucous trap dust, micro-organisms, pollen and other minute particles present in the air. In this way, the respiratory passage is kept free of dust particles.
APPEARS IN
संबंधित प्रश्न
The mountaineers carry oxygen with them because ______.
Trace the movement of oxygenated blood in the body.
Name the process by which plant parts like roots, stems, and leaves get oxygen required for respiration.
What is the name of the extensions of the epidermal cells of a root which help in respiration?
State whether the following statement is true or false:
Fish and earthworm exchange gases during respiration in the same way.
Explain why, a land plant may die if its roots remain waterlogged for a long time.
State the three common features of all the respiratory organs like skin, gills and lungs.
Why do fishes die when taken out of water?
Explain how, it would benefit deep sea divers if humans also had gills.
Give the main points of difference between respiration in plants and respiration in animals.
What type of repiration takes place in yeast?
Lack of oxygen in muscles often leads to cramps in the legs of sprinters. This is due to the conversion of pyruvate to:
What is the name of tissues which transport:
water and minerals in a plant?
An animal in which the oxygenation of blood does not take place in the lungs is:
Answer this question.
Name the organ of respiration in fishes.
Which chemical compound inside a cell can be termed "Currency of Energy"?
State one function of the following:
Pleural fluid
Differentiate between the following pairs on the basis of the aspect given in the brackets.
Tidal volume and Residual volume (Quantity of air)
With regard to the respiratory system and the process of respiration in man, answer the following question :
Give the overall chemical equation to represent the process of respiration in humans.
Rewrite the following statement by selecting the correct option.
During respiration, ____________ gas is given out.
Answer the following question.
In the experimental set up to show that "CO2 is given out during respiration", name the substance taken in the small test tube kept in the conical flask. State its function and the consequence of its use.
What percent of oxygen is transported in a dissolved state by the plasma?
The partial pressure of oxygen of blood in pulmonary capillaries is i ______ mrnHg while in alveolar air it is ii ______ mmHg.
Which is the correct sequence of air passage during inhalation?
Name the energy currency in the living organisms. When and where is it produced?
During the process of exhalation, the ribs move
Breathing is a process that
- provides O2 to the body.
- breaks down food to release energy.
- helps the body to get rid of CO2.
- produces water in the cells.
Which of the following gives the correct combination of functions of breathing?
