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Posterior part of the trachea (100X)

Microimage
Posterior part of the trachea. Image copyright: University of Oslo, CC BY-NC-ND 4.0. (Tissue stain: H+E).

This is from the posterior part of the trachea. The trachealis muscle seen here is a smooth muscle that connects the ends of the C-shaped cartilage rings in the trachea. Unlike the rigid cartilage in the anterior and lateral portions of the trachea, the trachealis muscle is soft.

Published April 27th 2023, updated January 11th 2024.