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Human digestive system

#HumanDigestiveSystem #DigestiveSystem #AnatomyExplained #BiologyLesson #ScienceEducation #LearnBiology #BodySystems #ScienceForKids #HowTheBodyWorks #DigestiveHealth The *human digestive system* is a complex series of organs and glands that processes food in order to absorb nutrients and eliminate waste. Here's a simple overview of how it works: --- 🌟 *Main Parts of the Digestive System:* 1. *Mouth* Digestion begins here. Teeth break food down physically. Saliva (from salivary glands) contains enzymes like *amylase* that start breaking down carbohydrates. 2. *Esophagus* A muscular tube that connects the throat to the stomach. Moves food using *peristalsis* (wave-like muscle contractions). 3. *Stomach* Stores and churns food. Secretes *gastric juices* (including hydrochloric acid and pepsin) to break down proteins. Turns food into a semi-liquid called **chyme**. 4. *Small Intestine* (duodenum, jejunum, ileum) Most digestion and *nutrient absorption* happen here. *Pancreas* releases enzymes. *Liver* produces **bile**, stored in the **gallbladder**, to help digest fats. 5. *Large Intestine* (colon) Absorbs *water* and **electrolytes**. Forms and stores **feces**. Contains gut bacteria that help with digestion. 6. *Rectum & Anus* Feces are stored in the rectum and expelled through the anus. --- ⚙️ *Key Digestive Organs (Accessory Organs):* **Liver**: Makes bile to digest fats and processes nutrients. **Pancreas**: Secretes digestive enzymes and hormones (like insulin). **Gallbladder**: Stores and releases bile into the small intestine. --- 🧪 Digestive Enzymes (Some Examples): | Enzyme | Works On | Found In | |--------|------------------|----------------------| | Amylase| Carbohydrates | Mouth, Pancreas | | Pepsin | Proteins | Stomach | | Lipase | Fats | Pancreas, Small Intestine | --- Would you like a diagram, quiz, or notes for studying?