AskDefine | Define tubule

Dictionary Definition

tubule n : a small tube

User Contributed Dictionary



  1. A small pipe or fistular body; a little tube.

Extensive Definition

A tubule is a very small tube or fistular structure.
A system of surface-connected membranes in muscle that enables a nerve impulse to travel to the interior of the muscle fibre.
In anatomy, a tubule is a minute tube lined with glandular epithelium.
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