Windpipe and Lungs


Life Process Respiration - Concepts
Class - 6th Foundation NTSE Subjects
 
 
Concept Explanation
 

Windpipe and Lungs

Wind Pipe: The wind pipe is a delicate muscular tube, situated in front of the food pipe, in the neck. It is about 12 cm in length and 2.5 cm in diameter. The wind pipe gets divided into two parts, called bronchi, as it enters the lungs, in the chest cavity.

Lungs: The bronchi lead into the lungs which are situated on either side of the chest cavity. Lungs contain a number of air sacs and blood vessels. When air enters the lungs, the blood vessels, around the air sacs, take In oxygen and give out carbon dioxide and water. Oxygen is carried by the blood to different parts of the body. In return, carbon dioxide and water vapour from the blood, enter the lungs and are thrown out through the nose.

Sample Questions
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Question : 1

Each human lungs contain _____________alveoli.

Right Option : B
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Question : 2

Lungs are present in chest cavity . this cavity is surrounded by ribs  on the sides.  A large muscular sheet called diaphragm form the floor of the chest cavity. Percentage of oxygen in inhaled air is ___________in exhaled air.

Right Option : B
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Question : 3

Covering of lungs is called ________________

Right Option : B
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