Small intestine. The muscles of the small intestine mix food with digestive juices from the pancreas, liver, and intestine, and push the mixture forward for further digestion. The walls of the small intestine absorb water and the digested nutrients into your bloodstream.

The histological structure of the small intestine is similar to the other organs in the digestive tract. There are four main layers: Mucosa (Innermost layer) – Contains the epithelium, lamina propria and muscularis mucosae.

The small intestine (small bowel) is about 20 feet long and about an inch in diameter. Its job is to absorb most of the nutrients from what we eat and drink. The large intestine (colon or large bowel) is about 5 feet long and about 3 inches in diameter. The colon absorbs water from wastes, creating stool.

The principal function of the small intestine is to break down food, absorb nutrients needed for the body, and get rid of the unnecessary components.

The small intestine is the part of the intestines where 90% of the digestion and absorption of food occurs, the other 10% taking place in the stomach and large intestine. The main function of the small intestine is absorption of nutrients and minerals from food.

Here are the 19 best foods to improve your digestion.

1. Yogurt. Share on Pinterest.
2. Apples. Apples are a rich source of pectin, a soluble fiber.
3. Fennel. Fennel, a plant with a pale bulb and long green stalks, is used to add flavor to food.
4. Kefir.
5. Chia Seeds.
6. Kombucha.
7. Papaya.
8. Whole Grains.

Here are 11 evidence-based ways to improve your digestion naturally.

1. Eat Real Food. Share on Pinterest Photography by Aya Brackett.
2. Get Plenty of Fiber. It’s common knowledge that fiber is beneficial for good digestion.
3. Add Healthy Fats to Your Diet.
4. Stay Hydrated.
5. Manage Your Stress.
6. Eat Mindfully.
7. Chew Your Food.
8. Get Moving.