Question

What does the tube-like portion present between the larynx and bronchi call?

Answer 1

The larynx is the upper part of the trachea. It is a short tubular chamber supported by a cartilaginous framework. It allows only air to pass into the lungs. It grows larger and is prominent in males called Adam’s apple. The bronchi are the airways or passageways that lead to the trachea into the lungs. These evolve into tiny air sacs called alveoli, which perform the sight of exchange of $O_2$ and $CO_2$ in the respiratory system.

Complete answer:
The trachea is a tubular structure that is about 12 cm in length and 2.5 cm in diameter. It is also known as the windpipe. It starts posterior to the larynx and extends upto the middle of the thoracic cavity where it is divided into left and right primary bronchi. The walls of the trachea and bronchi are supported by incomplete sea shaped rings of cartilage which prevent their collapse during inspiration.

It is a tube-like portion present between the bronchi and larynx. There is cricoid cartilage at the upper part of the trachea which attaches it to the larynx. The trachea is also lined with some hair-like structures called cilia. The trachea runs parallel to the oesophagus and the back of the trachea is softer which allows the oesophagus to expand at the time of eating.

Therefore the tube-like portion present between the larynx and bronchi is called ‘trachea’.

Note: Respiration is the biochemical process of oxidation of food to form CO2, water and energy. It releases the energy which is stored in the form of ATP. A number of enzymes are involved in this process and occur in all cells of the body. The trachea is the term used for the respiratory organ of insects and the larynx is the organ that produces sound.