Question

The number of tracheal rings in man are

• A. 16-20
• B. 20-24
• C. 24-28
• D. 28-32

Answer 1

Answer: (A)

16-20

The trachea is a tube that extends from the lower edge of the larynx to the upper part of the chest above the heart. It has a framework of 16 to 20 hyaline cartilages to keep it open. These cartilages, are shaped somewhat like a tiny horseshoe or the letter C, are found along the entire length of the trachea. All the open sections of these cartilages are at the back so that the oesophagus can bulge into the section during swallowing. The purpose of the trachea is to conduct air between the larynx and the lungs.

So, the correct answer is option A.