Tracheal cartilages

In the trachea, or windpipe, there are tracheal rings, also known as tracheal cartilages. Cartilage is strong but flexible tissue. The tracheal cartilages help support the trachea while still allowing it to move and flex during breathing.

There are generally sixteen to twenty individual cartilages in the trachea, which varies from person to person. These C-shaped cartilages are stacked one on top of the other and are open at the area where the trachea is nearest the esophagus, which leads from the throat to the stomach. Each one is about one to two millimeters thick, with a depth of around four to five millimeters.

The tracheal cartilages have an order, starting with the peculiar tracheal cartilages. These are the first and last rings in the trachea. The first cartilage is broad and divided at the end. It sometimes blends in with the following cartilage, depending on the structure of the trachea. The last cartilage is broad in the middle and thick, with a triangular shape for a lower border. This piece curves downward, extending into the two bronchi — the main passageways to the lungs — forming an imperfect circle that encloses each bronchus.

When a person ages, the tracheal cartilages tend to calcify, or stiffen. Their normal state is one of elasticity. Two or more cartilages often fuse together in the trachea, as part of the aging process.

Written and medically reviewed by the Healthline Editorial Team
Co-developed by:

In Depth: Tracheal cartilages

Debugging Tools

Level: 6
Frame: 1
Toggle Hotspot
VP Data Tool
HexTable json from Steve
Steve's ajax layer update call:
[still on original layer]

Ad values:

adModel.dfpAdSite: hn.us.hl.bm.x.x.x
adParams['k1']: otherrespiratory,structure_of_tracheal_cartilage,8923953

More on BodyMaps

Take a Video Tour

Learn how to rotate, look inside and explore the human body. Take the tour

BodyMaps Feedback

How do you like BodyMaps? How can we improve it? Tell us what you think
Advertisement
Advertisement