Structure of the Digestive System - Educational diagram illustrating organs and their roles in digestion.

Let's solve the task step by step based on the image you provided. The task has two parts:

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Task 1: Label the diagram of the digestive system using the table given in the right

We are given a diagram of the human digestive system with numbered labels (1 to 12), and we need to match these numbers with the correct structures from the table.

Here is the list of structures from the table and their corresponding functions:

| Structure | Function |
|-------------------|--------|
| Mouth | Where food enters the body, known as ingestion |
| Salivary glands | Produce saliva which lubricates the food and contains amylase for starch digestion |
| Liver | Produces bile, which is involved in lipid digestion (emulsification) |
| Gall bladder | Stores bile, which is involved in lipid digestion (emulsification) |
| Pancreas | Produces digestive enzymes and alkali which are secreted into the small intestine |
| Oesophagus | Food travels down here by peristalsis to the stomach |
| Stomach | Food is mixed with acid and enzymes that digest protein in the food |
| Small intestine | Food is further digested in the first part and then absorbed into the blood; in the later part |
| Large intestine | Reabsorption of water and water-soluble vitamins and minerals; faeces are formed |
| Rectum | Storage of faeces before ejection |
| Anus | Where faeces are expelled from the body |
| Epiglottis | Prevents swallowed food from entering the lungs |

Now let’s match the numbers on the diagram to the correct structures:

1. Mouth – Clearly labeled at the top.
2. Salivary glands – Located near the mouth (under the jaw).
3. Liver – Large organ under the diaphragm, above the stomach.
4. Gall bladder – Small sac attached to the liver.
5. Anus – At the end of the digestive tract.
6. Rectum – Just before the anus.
7. Large intestine – The outer ring around the small intestine.
8. Small intestine – Coiled tube inside the large intestine.
9. Pancreas – Behind the stomach.
10. Stomach – J-shaped organ below the esophagus.
11. Oesophagus – Tube connecting mouth to stomach.
12. Epiglottis – Flap at the back of the throat that covers the trachea during swallowing.

So, the labeling should be:

- 1 → Mouth
- 2 → Salivary glands
- 3 → Liver
- 4 → Gall bladder
- 5 → Anus
- 6 → Rectum
- 7 → Large intestine
- 8 → Small intestine
- 9 → Pancreas
- 10 → Stomach
- 11 → Oesophagus
- 12 → Epiglottis

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Task 2: In the table, give the function of each of the structures you have labelled on the diagram

Now, we will fill in the Function in Digestion column for each structure, based on the information in the table provided.

| Structure | Function in Digestion |
|-------------------|-----------------------|
| 1. Mouth | Where food enters the body, known as ingestion |
| 2. Salivary glands| Produce saliva which lubricates the food and contains amylase for starch digestion |
| 3. Liver | Produces bile, which is involved in lipid digestion (emulsification) |
| 4. Gall bladder | Stores bile, which is involved in lipid digestion (emulsification) |
| 5. Anus | Where faeces are expelled from the body |
| 6. Rectum | Storage of faeces before ejection |
| 7. Large intestine| Reabsorption of water and water-soluble vitamins and minerals; faeces are formed |
| 8. Small intestine| Food is further digested in the first part and then absorbed into the blood; in the later part |
| 9. Pancreas | Produces digestive enzymes and alkali which are secreted into the small intestine |
| 10. Stomach | Food is mixed with acid and enzymes that digest protein in the food |
| 11. Oesophagus | Food travels down here by peristalsis to the stomach |
| 12. Epiglottis | Prevents swallowed food from entering the lungs |

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✔ Final Answer Summary

#### Labelled Diagram (Numbers → Structures):
1. Mouth
2. Salivary glands
3. Liver
4. Gall bladder
5. Anus
6. Rectum
7. Large intestine
8. Small intestine
9. Pancreas
10. Stomach
11. Oesophagus
12. Epiglottis

#### Table Completed:

| Structure | Function in Digestion |
|-------------------|-----------------------|
| 1. Mouth | Where food enters the body, known as ingestion |
| 2. Salivary glands| Produce saliva which lubricates the food and contains amylase for starch digestion |
| 3. Liver | Produces bile, which is involved in lipid digestion (emulsification) |
| 4. Gall bladder | Stores bile, which is involved in lipid digestion (emulsification) |
| 5. Anus | Where faeces are expelled from the body |
| 6. Rectum | Storage of faeces before ejection |
| 7. Large intestine| Reabsorption of water and water-soluble vitamins and minerals; faeces are formed |
| 8. Small intestine| Food is further digested in the first part and then absorbed into the blood; in the later part |
| 9. Pancreas | Produces digestive enzymes and alkali which are secreted into the small intestine |
| 10. Stomach | Food is mixed with acid and enzymes that digest protein in the food |
| 11. Oesophagus | Food travels down here by peristalsis to the stomach |
| 12. Epiglottis | Prevents swallowed food from entering the lungs |

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This completes both tasks accurately and clearly. Let me know if you'd like a printable version or visual explanation!