DIGESTION AND EXCRETION ORGAN SYSTEM
PURPOSE/FUNCTION:
It consists of a number of organs connected and functioning in a series to break food and convert it into essential nutrients for absorption and expel the unused or waste material.

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IMAGE Source:OpenStax College. Anatomy & Physiology, Connexions

Web site. http://cnx.org/content/col11496/1.6/, Jun 19, 2013.

MAJOR COMPONENTS:
- MOUTH: The opening through which human takes in food. Mouth is the masticating and tasting apparatus of us. It is also the source of vocal utterance.

 - ESOPHAGUS: It is a muscular passage connecting the mouth or pharynx with our stomach.

- STOMACH: Stomach is a sac like enlargement of the alimentary canal forming an organ for storing, diluting, and digesting food
- SMALL INTESTINE:The narrow, winding, upper part of the intestine where digestion is completed and nutrients are absorbed by the blood. It extends from the pylorus to the cecum and consists of the duodenum, the jejunum, and the ileum.
- LARGE INTESTINE AND RECTUM: The portion of the intestine that extends from the ileum to the anus, forming an arch around the convolutions of the small intestine and including the cecum, colon, rectum, and anal canal. Rectum is the terminal portion of the large intestine, extending from the sigmoid flexure to the anal canal.
- ANUS: The opening at the lower end of our alimentary canal through which solid waste is eliminated from the body.
- LIVER AND PANCREAS also plays an important function in digestion process.

MAJOR DISEASES:
- GERD
- CROHN’S DISEASE
- DIVERTICULITIS
- IRRITABLE BOWEL SYNDROME

 

 

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