submucosal gland acinus

A spherical or tubular structure in a submucosal gland that produces and secretes mucus and other substances into the ducts leading to the surface epithelium.

Type Gland
Parent Structure mucous acinus

Frequently Asked Questions

What is the submucosal gland acinus?
A submucosal gland acinus is the terminal secretory unit of a submucosal gland composed of mucous and serous cells arranged around a lumen.
Where is the submucosal gland acinus located?
Located deep within the submucosa of the respiratory tract, acini are organized into discrete glands beneath the mucosa of the trachea and bronchi.
What is the function of the submucosal gland acinus?
The acinus secretes mucus and serous fluid that lubricates and protects the airway epithelium while trapping inhaled particles for clearance via mucociliary transport.
What is the submucosal gland acinus connected to?
Multiple acini drain into collecting ducts that ultimately connect to the ciliated terminal ducts opening into the airway lumen.
Why is the submucosal gland acinus clinically important?
Dysfunction of glandular acini occurs in cystic fibrosis where thick secretions accumulate, and excessive mucus production in chronic bronchitis leads to airway obstruction.

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Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.