The first major site of chemical digestion in frog is their stomach
Its the mouth.........cause saliva breaks down some amount of starch into simple sugars. but its not a very major site..............
The small intestine is the organ responsible for both chemical digestion and absorption of nutrients from food. Enzymes and bile break down the food, while nutrients are absorbed through the small intestine's lining into the bloodstream for distribution to the body's cells.
In the formation of the embryo the first and perhaps most important physical differentiation is gastrolization, which is the formation of the alimentory canal.
fatty acidsglycerol
I don't think of it as an organ, but chemical digestion of starch begins in the mouth, using saliva.
Salivary glands
The pancreas secretes digestive enzymes that help break down carbohydrates, fats, and proteins in the small intestine. This organ plays a crucial role in the chemical digestion of food.
In the stomach.
The organ that begins the chemical digestion of protein is the stomach. It secretes gastric juices, including hydrochloric acid and the enzyme pepsin, which break down protein molecules into smaller peptides. This process is crucial for further digestion and absorption of proteins in the small intestine.
heart
The organ in the digestive system where the chemical breakdown of food primarily occurs is the stomach. Here, gastric acids and enzymes break down food into smaller particles for further digestion and absorption in the intestines.
The organ responsible for most of the chemical digestion in the human body is mainly the stomach.