Science - Digestive System of a Dog.pptx

this presentation is all about the digestive system of a dog.

1. Science V

2. The Digestive System of a Dog

3. The Digestive System of a Dog

4. Digestive System - is a complex group of organs that work together to process the food a dog eats. This process, called digestion, breaks down food into smaller, usable parts (nutrients) that the body can absorb for energy, growth, and repair. The system also eliminates the parts of the food that cannot be used.

5. The Parts of the Digestive System 1. The Oral Cavity (Mouth) Digestion begins in the mouth. A dog's mouth contains teeth designed for tearing and crushing food. Saliva, produced in the mouth, helps soften the food. 2. The Esophagus - The esophagus is a muscular tube that connects the pharynx (throat) to the stomach. It transports food through a series of rhythmic contractions called peristalsis . This process ensures that food moves efficiently from the mouth to the stomach, even if the dog is eating upside down!

6. 3. The Stomach The stomach is a muscular, J-shaped organ. When food enters the stomach, it is mixed with strong acids. 4. The Small Intestine The small intestine is the primary site of nutrient absorption. It is a long, winding tube. Here, enzymes from the pancreas and bile from the liver further break down carbohydrates, fats, and proteins. Tiny, finger-like projections on the walls of the small intestine to absorb these nutrients and transfer them into the bloodstream.

7. 5. The Large Intestine The large intestine is a shorter, wider tube than the small intestine. Its main job is to absorb water and electrolytes from the remaining undigested food. It also plays a role in waste compaction. 6. The Rectum and Anus The rectum is the final section of the large intestine. It stores the compacted waste (feces) before it is eliminated from the body. The anus is the external opening from which the waste is expelled.

8. The Complete Digestive Process Ingestion: The dog eats and chews food. Passage: Food travels down the esophagus to the stomach. Mechanical & Chemical Breakdown: Food is broken down in the stomach and small intestine. Absorption: Nutrients are absorbed into the body through the small intestine. Water Absorption: Water is absorbed in the large intestine. Elimination: Waste is stored in the rectum and eliminated through the anus.