Question

the trachea branches into two thinner tubes called​

Answer 1

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The Trachea branches into two thinner tubes are called Bronchi.

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• Trachea devides in a right and left bronchus— Consist of C shaped certillage rings and lined with goblet cells (mucus).

• Bronchi branch in lungs to form bronchioles— branch further and certillage rings disappear — lead air to air sacks of lung.

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Answer 2

Answer :

• The trachea branches into two thinner tubes is called bronchus.

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• Trachea is present in respiratory system.
• In respiratory system there is a Nasal cavity , Pharynx , Larynx, Trachea ,Lungs , Aleveoli , Diaphragm.

Detailed Explanation of important parts in respiratory system :

1. Nose : Respiratory system and respiration begins with nose. Air is filtered with the help of hair and mucus present in the nose.
2. Pharynx : Food pipe and wind pipe originate in the pharynx. Wind pipe is present in front of food pipe . There is a lid at the beginning of wind pipe. This lid closes the wind pipe. This closes the wind pipe during passing of food into food pipe and thereby normally prevents the entry of food particles into wind pipe.
3. Wind pipe : Wind pipe is swollen at the begining due to sound box. Wind pipe bifurcates in the thorax . One branch enters the right lung and the other into left lung.
4. Lungs : A lung is present on either sides of heart in thoracic cavity . Each lungs has double layered covering which is also called pleura. Lungs are elastic like a sponge. Lungs are made up of many small compartments , called as alveoli. Rich network of capillaries is present around each alveolus.
5. Diaphragm: A muscular partition is present at the base of thoracic cage . This partition is called diaphragm . Air moves into the lungs through nose. When ribs return to their original position and diaphragm rises up , pressure of lungs increases . Air moves out from it through nose. Continuous upward and downward movement of diaphragm is neccessary to bring about the breathing.