Trachea

Definition

The trachea, also known as the windpipe, is a tube that connects the larynx to the bronchi of the lungs and allows air passage. It plays a crucial role in providing airflow to and from the respiratory system.

5 Must Know Facts For Your Next Test

1. The trachea is lined with ciliated epithelial cells that help trap and expel pathogens and debris.
2. It splits into two primary bronchi at its lower end, leading to each lung.
3. The trachea has cartilaginous rings that provide structural support and prevent collapse during inhalation.
4. Goblet cells within the tracheal lining secrete mucus to trap microorganisms.
5. Infections of the trachea can lead to conditions such as tracheitis, which may complicate respiratory system infections.

Review Questions

• What type of cells line the trachea and what is their function?
• How does the structure of the trachea prevent it from collapsing?
• What role do goblet cells play in maintaining respiratory health?

Related terms

Bronchi:

The large air passages that branch off from the trachea into each lung.

Larynx:

The voice box located above the trachea; it houses vocal cords.

Goblet Cells:

Mucus-secreting cells found in various parts of the respiratory tract, including the trachea.