Discover how the digestive system works in processing food for energy. LEARN MORE about the Functions of Human Digestive Organs.
|Organ||Major functions||Other functions|
|Mouth|| || |
|Stomach|| || |
|Small intestine|| |
|Accessory organs|| || |
|Large intestine|| || |
The digestive system is a complex network of organs that work together to break down food into nutrients that can be absorbed and used by the body. Here are the functions of human digestive organs:
- Mouth: The mouth is responsible for mechanically breaking down food into smaller pieces through chewing and grinding. Salivary glands in the mouth also secrete saliva, which contains enzymes that begin the process of breaking down carbohydrates.
- Esophagus: The esophagus is a muscular tube that connects the mouth to the stomach. It uses a series of muscle contractions called peristalsis to push food down into the stomach.
- Stomach: The stomach secretes acid and enzymes that further break down food and mix it with stomach acid to create a thick liquid called chyme. The stomach also acts as a storage site for food, releasing small amounts of chyme into the small intestine as needed.
- Small intestine: The small intestine is where most of the nutrients from food are absorbed into the bloodstream. The walls of the small intestine are lined with villi, which are tiny finger-like projections that increase the surface area for absorption.
- Large intestine: The large intestine, also known as the colon, absorbs water and electrolytes from undigested food, forming solid feces that can be eliminated from the body.
- Liver: The liver produces bile, which is stored in the gallbladder and helps to break down fats in the small intestine.
- Pancreas: The pancreas produces enzymes that are released into the small intestine to help break down carbohydrates, fats, and proteins.
Overall, the digestive system plays a vital role in breaking down food, absorbing nutrients, and eliminating waste products from the body.