1. Mouth:

- The mouth is the initial entry point for food.

- Composed of lips, teeth, tongue, and salivary glands.

- Teeth break down food into smaller pieces, and saliva begins the chemical breakdown of carbohydrates.

2. Esophagus:

- A muscular tube connecting the mouth to the stomach.

- Peristaltic muscle contractions push food down the esophagus.

3. Stomach:

- A J-shaped organ where food undergoes mechanical and chemical digestion.

- Secretes gastric juices containing hydrochloric acid and pepsin, which break down proteins.

4. Small Intestine:

- The longest part of the digestive tract, composed of three segments: duodenum, jejunum, and ileum.

- Receives digestive enzymes from the pancreas and bile from the gallbladder to further break down food.

- Absorption of nutrients occurs primarily in the small intestine.

5. Pancreas:

- An organ that secretes digestive enzymes, including amylase, lipase, and protease, into the small intestine.

- Also produces hormones like insulin and glucagon, which regulate blood sugar levels.

6. Gallbladder:

- A small organ that stores and releases bile, which helps in the digestion and absorption of fats.

- Bile is produced in the liver but concentrated and stored in the gallbladder.

7. Large Intestine (Colon):

- Comprised of the ascending, transverse, descending, and sigmoid colon, and rectum.

- Absorbs water, electrolytes, and vitamins, forming solid waste (stool).

- Beneficial bacteria reside in the colon, aiding in the digestion of certain substances.

8. Rectum:

- The last portion of the large intestine, where stool is stored before elimination.

9. Anus:

- The final part of the digestive tract, an opening through which stool exits the body.