Tubule (noun)

A small tube or duct in the body, especially in the kidney or reproductive system.

Origin:

From the latin word tubulus, which means 'small tube'.

Examples:

1. The renal tubules play a crucial role in filtering waste products from the bloodstream.
2. The reproductive system contains a network of ducts and tubules that transport sperm and eggs.
3. Tubules in the kidney are lined with specialized cells that help regulate fluid and electrolyte balance.
4. The walls of the tubules in the kidney are highly permeable, allowing for the movement of small solutes and water.
5. The size and shape of tubules can be used to distinguish between different types of cells and tissues.