1. Mouth: The mouth is the first chamber where food enters the digestive system. It contains teeth that help break down food into smaller pieces.
2. Esophagus: The esophagus is a tube that connects the mouth to the stomach. It moves food down into the stomach through a series of muscle contractions called peristalsis.
3. Stomach: The stomach is a J-shaped organ that acts as a reservoir for food. It secretes gastric juices that break down proteins and begin the process of digestion.
4. Small Intestine: The small intestine is the longest part of the digestive system. It is responsible for the absorption of nutrients from food. It contains villi and microvilli, which are small finger-like projections that increase the surface area for nutrient absorption.
5. Large Intestine: The large intestine is responsible for absorbing water and electrolytes from waste material and forming feces. It contains beneficial bacteria that help break down indigestible substances.