Thyroid cartilage

Anatomy

The largest part of the larynx. It comprises of two quadrangular lamina, fused along the inferior two thirds to form the laryngeal prominence.

The posterior border of each lamina projects as superior and inferior horns. The superior horns attaches to the hyoid bone via the thyrohyoid membrane. The inferior horns articulate with the cricoid cartilage. On the lateral surface of each lamina there is an oblique line which muscles attach. (Strap muscles).

Functions

Part of the larynx which is both a valve to close the lower respiratory and an instrument to produce sound. It is also the site for attachment for muscles and ligaments.

Clinical

The thyroid prominence is more prominent in males than females. This is because the angle is sharper and laminae broader anteroposteriorly.

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