HUMAN DIGESTIVE SYSTEM MODEL

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The human digestive system is a remarkable network of organs and structures responsible for processing food and extracting nutrients. Let’s explore its key components:

Mouth (Oral Cavity):
- The process begins with the mouth, where food enters.
- Teeth help grind food, and the tongue mixes it with saliva.
- Saliva contains enzymes that initiate digestion.
Throat (Pharynx):
- The throat serves as a passage connecting the mouth to the esophagus.
Esophagus:
- The esophagus transports food from the throat to the stomach.
- Muscular contractions (peristalsis) push food downward.
Stomach:
- The stomach further breaks down food using gastric juices.
- It churns and mixes food, creating a semi-liquid substance called chyme.
Small Intestine:
- The small intestine is where most digestion and nutrient absorption occur.
- It consists of three parts: duodenum, jejunum, and ileum.
- Enzymes from the pancreas and bile from the liver aid digestion.
Large Intestine (Colon):
- The large intestine absorbs water and electrolytes.
- It houses beneficial gut bacteria.
- The cecum, ascending colon, transverse colon, descending colon, and sigmoid colon make up the large intestine.
Rectum and Anus:
- The rectum stores feces until elimination.
- The anus is the exit point for waste.