arc/notes
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

vault backup: 2024-09-24 21:39:37

Browse Source
This commit is contained in:
zleyyij 2024-09-24 21:39:37 -06:00
parent d3bbe32413
commit a28da01021
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
education/nutrition/Digestive System.md
View File

@ -62,7 +62,7 @@ Chemical digestion refers to the breakdown of large molecules in food into small
- **Simple Diffusion**: Occurs when the concentration of a particular nutrient is higher in one area than an other. This form of transport does not require energy input. Many water-soluble vitamins, lipids, and some minerals are absorbed in the digestive tract by simple diffusion.
- **Facilitated Diffusion**: Enterocytes absorb some nutrients by facilitated diffusion, another process that does not require energy. Although the nutrient moves down its concentration gradient, it still needs to be carried by a special transport protein within the membrane of the enterocyte. Absorption of simple sugar fructose occurs by facilitated diffusion
- **Active Transport**: Some nutrients move from the lumen of the intestine and into an enterocyte against the concentration gradient; that is, from low to high concentration. Absorption of these nutrients requires both a unique transport protein and energy. Enterocytes rely on active transport to absorb glucose and amino acids.
- **Endocytosis**: In a few instances, a segment of a the cell membrane of an enterocyte surrounds and swallows relatively large substances, such as intact protein molecules. This process enables an infant's intestinal tract to absorb whole proteins in human milk that provide benefits to the immune system. However, endocytosis is not a common way for nutrients to enter enterocytes.
- **Endocytosis**: In a few instances, a segment of a the cell membrane of an enterocyte surrounds and swallows relatively large substances, such as intact protein molecules. This process enables an infant's intestinal tract to absorb whole proteins in human milk that provide benefits to the immune system. However, endocytosis is not a common way for nutrients to enter enterocytes.
# Definitions
| Phrase | Definition |