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प्रश्न
Explain with reasons.
Upward and downward movement of diaphragm occurs consecutively.
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उत्तर
The diaphragm is a muscular partition which is present between the thoracic cavity and the abdominal cavity. During the process of breathing, the upward and downward movement of the diaphragm occurs simultaneously. When we inhale, the ribs rise up while the diaphragm lowers down simultaneously causing a decrease in pressure on the lungs. This results in the moving of air into the lungs through the nose. As the ribs return to their original position, the diaphragm rises up leading to the increase in pressure inside the lungs. This results in moving of the air outside the nose.
संबंधित प्रश्न
The ultimate end parts of the respiratory system in humans are known as
Give suitable explanation for the following :
Why does gaseous exchange continue in the lungs even during expiration?
The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured.
The following diagram shows a group of the lung volumes and capacities.
Study the diagram carefully and explain briefly the following :
Vital capacity (VC)
Name the following:
The two membranes which protect the lungs.
Differentiate between
bronchi and alveoli.
Define respiration.
What are their functions?
Give the functions of the following:
Conchae
Carefully study the diagram of the human respiratory system with labels A, B, C and D. Select the option which gives correct identification and main function and /or characteristic.
A person suffers punctures in his chest cavity in an accident without any damage to the lungs. Its effect could be ______.
