Lingula

Definition

The lingula is a small, tongue-shaped projection on the superior part of the left lung, adjacent to the heart. It corresponds anatomically to the middle lobe of the right lung and serves to increase the lung's surface area for gas exchange.

Related terms

Bronchi:

The main passageways directly attached to the lungs that allow air in and out.

Diaphragm:

A dome-shaped muscle located below the lungs that plays a major role in breathing by contracting and relaxing to change thoracic pressure.

Alveoli:

Tiny air sacs within the lungs where gas exchange between air and blood takes place