INTESTINAL DIGESTION Meaning and
Definition
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Intestinal digestion refers to the process of breaking down complex food molecules in the small intestine to smaller, absorbable nutrients. It is the second phase of digestion following mechanical digestion in the mouth and stomach.
The small intestine plays a crucial role in the digestion and absorption of nutrients, as it is the primary organ responsible for this process. It is lined with tiny finger-like projections called villi, which increase its surface area, allowing more efficient absorption.
During intestinal digestion, various digestive enzymes are secreted from the intestinal wall as well as the pancreas and gallbladder. These enzymes include proteases, lipases, and carbohydrases, which break down proteins, fats, and carbohydrates, respectively.
Proteins are further broken down into amino acids, which are the building blocks of proteins. Fats are broken down into fatty acids and glycerol, while carbohydrates are broken down into simple sugars like glucose. These smaller molecules are then absorbed through the intestinal wall into the bloodstream and transported to cells throughout the body for energy production and other essential functions.
Intestinal digestion is a complex and highly regulated process that ensures efficient absorption of nutrients from the food we eat. Any imbalance or disruption in this process can lead to digestive disorders and nutrient deficiencies.
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That part of d. which is carried on in the intestine, it affects all the food-stuffs-starches, fats, and proteins.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for INTESTINAL DIGESTION
- i ntestinal digestion
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Etymology of INTESTINAL DIGESTION
The word "intestinal" originates from the Latin word "intestīnus", which means "internal" or "within". It is derived from "intus", meaning "inside".
The word "digestion" comes from the Latin word "digestio", which is derived from the verb "digero", meaning "to digest" or "to dissolve". "Digero" is composed of the prefix "di-", meaning "apart", and "gero", meaning "carry" or "move".
Therefore, when combined, "intestinal digestion" refers to the process of breaking down and absorbing food within the intestines.
