Britannica Sources used in this answer

How many major lobes does the right lung have?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Illustration showing different animals and their respiratory organs: a spider with book lungs, a chicken with lungs, a sponge with labeled inflow and outflow pores, a fish with gills, and a caterpillar with spiracles. — Respiratory system Different methods of respiration in animals.

The right lung is composed of three major lobes: the superior, middle, and inferior lobes. These lobes are separated from one another by deep horizontal and oblique fissures.12