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education/nutrition/Digestive System.md
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@ -17,8 +17,13 @@ Absorption is the uptake and removal of nutrients from the digestive tract.
4. Taste buds have specialized cells that help distinguish five basic tastes 4. Taste buds have specialized cells that help distinguish five basic tastes
5. You lose taste buds as we age. Older people have fewer taste buds than younger people. 5. You lose taste buds as we age. Older people have fewer taste buds than younger people.
2. Esophagus* 2. Esophagus*
1. The esophagus is a flap of tough tissue that p 1. The esophagus is a flap of tough tissue that prevents the food from entering the larynx and the trachea
2. **Peristalsis** is the wave of muscular contraction that helps move material through most of the digestive tract. It's an involuntary response to swallowing
3. By relaxing and contracting, the muscles can mix substances, in the lumen and control movement through the tract
3. Stomach* 3. Stomach*
1. The stomach is a muscular sac that stores and mixes food
2. Gastric glands located in the stomach synthesize and secrete gastric juice
1. Gastric juice is a mix of mucus, hydrochloric acid, intrinsic factor, and digestive enzymes
4. Small intestine (DJI) 4. Small intestine (DJI)
1. Duodenum 1. Duodenum
2. Jejunum 2. Jejunum
@ -46,3 +51,9 @@ Chemical digestion refers to the breakdown of large molecules in food into small
- Enzymes usually end in -ase and begin with the name of whatever they are working to digest: - Enzymes usually end in -ase and begin with the name of whatever they are working to digest:
- Amylase digests amylose - Amylase digests amylose
- Maltase digests maltose - Maltase digests maltose
# Definitions
| Phrase | Definition |
| ------ | --------------------------------------------- |
| Lumen | The open space inside of the digestive system |