Difference between revisions of "Small Intestine"

Revision as of 18:53, 5 November 2018

The small intestine is part of the digestive system.

A computer generated image showing the small intestine, large intestine, rectum and anus.

The small intestine is an organ in the digestive system which absorbs nutrients into the blood.

The small intestine is a very long tube to give a large surface area to absorb nutrients.

There is around 1kg of bacteria inside the small intestine which helps digest the food.

There are digestive enzymes in the small intestine which break down large molecules into smaller molecules.

Only small molecules can be absorbed into the blood through the wall of the small intestine.

The small intestine is an organ in the digestive system which absorbs nutrients into the blood.

The Small Intestine is where food is broken down by digestive enzymes including amylase, protease and lipase before being absorbed into the blood.

The Small Intestine is long and folded to increase the surface area.

The Small Intestine has structures called Villi which are extra folds in the surface to increase the surface area.

The blood supply to the villis in the Small Intestine is very good to constantly supply blood with little nutrients keeping a high concentration gradient between the food and the blood.

There is around 1kg of bacteria inside the small intestine which helps digest the food.

Only small molecules can be absorbed into the blood through the wall of the small intestine.

@@ Line 22: / Line 22: @@
 : The [[Small Intestine]] is long and folded to increase the [[Surface Area|surface area]].
 : The [[Small Intestine]] has structures called [[Villi]] which are extra folds in the surface to increase the [[Surface Area|surface area]].
-: The [[blood]] supply to the [[villi]]s is very good to constantly supply [[blood]] with little [[nutrients]] keeping a high [[Concentration Gradient|concentration gradient]] between the food and the [[blood]].
+: The [[blood]] supply to the [[villi]]s in the [[Small Intestine]] is very good to constantly supply [[blood]] with little [[nutrients]] keeping a high [[Concentration Gradient|concentration gradient]] between the food and the [[blood]].
 : There is around 1kg of [[Bacteria in Digestion|bacteria]] inside the '''small intestine''' which helps [[digestion|digest]] the food.
 : Only small [[molecule]]s can be [[Absorb (Biology)|absorb]]ed into the [[blood]] through the wall of the '''small intestine'''.