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The Digestive Tract of a Pig
Transcript of The Digestive Tract of a Pig
Mechanical breakdown of the food begins here.
The teeth grind the food into smaller pieces.
The tongue pushes the food toward the esophagus. 1. Mouth Secretes saliva, which softens and moistens the food.
Saliva also starts the digestion of starch by way of enzymes. 2. Salivary Gland Tube that the food goes down from the mouth to the stomach.
Muscles within the esophagus push the food to the stomach. 3. Esophagus A chamber that the food falls into and chemicals are added.
The stomach cells contain enzymes and hydrochloric acid, which turn the food into particles of carbohydrates, proteins, and fats.
Sometimes, these particles are absorbed by the stomach and put into the bloodstream.
Any particles that the stomach cannot absorb goes into the small intestine. 4. Stomach First section of the small intestine.
Here, the liver and the pancreas secrete chemicals. 5. Duodenum When the liver secretes, it is stored into the gall bladder.
They go into the small intestine through the bile duct. 6. Liver with Gall Bladder Digestive juices from the pass through the pancreatic duct into the small intestine.
The enzymes in the secretions are vital to the digestion of the fats, carbohydrates, and proteins. 7. Pancreas Has 3 parts: the duodenum, the jejunum, and the ileum.
Food nutrients are absorbed in the second and third parts of the small intestine.
Undigested nutrients and secretions go into the large intestine. 8. Small Intestine Main function is to absorb water.
Place for waste material that make up feces.
Some digestion occurs here.
Muscle contractions push the food through large intestine. 9. Large Intestine An opening that undigested food exits the body through.
Food that enters the mouth and does not get digested or absorbed throughout the digestive tract is secreted through the anus as feces. 10. Anus