Laryngeal saccules

Diagram of the larynx, with the laryngeal saccules indicated

The laryngeal saccules are small, sac-like structures located within the larynx, specifically in the aryepiglottic fold. They are part of the respiratory system and play a crucial role in the process of respiration.

Anatomy

The laryngeal saccules are situated in the upper part of the larynx, between the false vocal cords and the arytenoid cartilages. They extend upwards from the ventricles of the larynx, forming pouches that are lined with respiratory epithelium. The saccules are filled with mucus-secreting goblet cells, which help to lubricate the vocal cords and protect the larynx from damage.

Function

The primary function of the laryngeal saccules is to produce and secrete mucus. This mucus serves to moisten and protect the vocal cords, facilitating their vibration and thus enabling speech. The mucus also traps dust and other foreign particles, preventing them from entering the lower respiratory tract.

Clinical significance

Abnormalities or diseases of the laryngeal saccules can lead to a variety of clinical conditions. For instance, laryngeal saccule cysts can form if the ducts of the saccules become blocked. These cysts can cause symptoms such as hoarseness, difficulty swallowing, and shortness of breath. Treatment typically involves surgical removal of the cyst.

Laryngeal saccule dilation is a condition seen in certain breeds of dogs, particularly those with brachycephalic syndrome. This condition can cause respiratory distress and may require surgical intervention.

See also

• Larynx
• Respiratory system
• Vocal cords

References

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