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Unicellular Glands

Unicellular Glands

Author: Aaron Mullally
Description:

- know the definition of unicellular

- know that unicellular glands are not common

- know that unicellular glands in humans are mucus secreting cells that line the mucous membranes of the body

- know the difference between mucus and mucous

- know what mucus is composed of

- make sure you understand the basics of cell organelles (nucleus, Golgi, R.E.R., etc)

In this packet you will learn about unicellular glands. The only major unicellular gland in humans are goblet cells and mucous glands found in the conducting airways and GI tract.

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Tutorial

Unicellular Glands: Goblet Cells

Remember that unicellular cells are single celled secretory cells. The only major example in humans would be goblet and mucous cells that are found in the conducting airways and GI tract, respectively. These are cells that produce a glycoprotein called musin that is secreted via exocytosis. Upon secretion musin is mixed with water and mucus is formed. Mucus is a wet sticky substance that is important for filtration purposes. The mucous membranes that line the conducting airways trap debris in the air that is passing by on its way to the lungs.

The mucosal lining of the GI tract ensures a smooth passage of the food mass (bolus) as it travels from mouth to anus. The mucosal lining of the stomach and small intestine are used as protective barriers from the strong stomach acid that is used for digestion.


Clinical Application

Here is a good clinical application to this particular gland, I highly recommend you read this:

http://www.merckmanuals.com/professional/sec19/ch278/ch278a.html

Source: Self made

Goblet and Mucous Cells

In this video you will learn about mucous and goblet cells of the human body

Source: Self made

Goblet Cell Image

Here is the image of a goblet cell from the presentation

Source: Self made