label digestive systems worksheet - worksheetszone - Free Printable

The task is to label the parts of the digestive system in the provided diagram. Below is the solution with an explanation for each part:

Solution:

1. Oral cavity: This is the mouth, where digestion begins with chewing and saliva.
2. Pharynx: The throat, which connects the mouth to the esophagus.
3. Esophagus: The tube that transports food from the pharynx to the stomach.
4. Stomach: A muscular organ that stores food and mixes it with gastric juices.
5. Liver: Produces bile, which helps digest fats.
6. Gallbladder: Stores and releases bile produced by the liver.
7. Pancreas: Produces enzymes that help digest carbohydrates, proteins, and fats.
8. Duodenum: The first part of the small intestine, where most chemical digestion occurs.
9. Large intestine: Absorbs water and forms waste (feces).
10. Rectum: Stores feces before they are eliminated.
11. Anus: The opening through which feces are expelled from the body.
12. Salivary glands: Produce saliva, which aids in breaking down food.
13. Epi-glottis: A flap that covers the trachea during swallowing to prevent food from entering the lungs.

Explanation:

- The oral cavity is where food enters the body and is broken down mechanically by chewing.
- The pharynx serves as a passageway for both air and food.
- The esophagus uses peristaltic movements to push food toward the stomach.
- The stomach churns food with gastric juices, breaking it down further.
- The liver, gallbladder, and pancreas secrete digestive juices into the small intestine.
- The duodenum is the initial segment of the small intestine where most chemical digestion occurs.
- The large intestine absorbs water and forms solid waste.
- The rectum and anus are involved in the elimination of waste.
- The salivary glands produce saliva, which starts the digestion process in the mouth.
- The epiglottis prevents food from entering the respiratory tract.

Final Answer:

Label the diagram as follows:
1. Oral cavity
2. Pharynx
3. Esophagus
4. Stomach
5. Liver
6. Gallbladder
7. Pancreas
8. Duodenum
9. Large intestine
10. Rectum
11. Anus
12. Salivary glands
13. Epiglottis

Boxed Final Answer:
\boxed{
\text{Oral cavity, Pharynx, Esophagus, Stomach, Liver, Gallbladder, Pancreas, Duodenum, Large intestine, Rectum, Anus, Salivary glands, Epiglottis}
}