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.
Covering of lungs is called ________________ | |||
Right Option : B | |||
View Explanation |
Each human lungs contain _____________alveoli. | |||
Right Option : B | |||
View Explanation |
During sneezing , we expel ____________________ | |||
Right Option : A | |||
View Explanation |
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