What is basic principle of digestion and absorption?

The basic principle of digestion involves the breakdown of food into smaller, absorbable components through mechanical and chemical processes. Enzymes play a crucial role in this process, facilitating the breakdown of carbohydrates, proteins, and fats. Absorption then occurs primarily in the small intestine, where nutrients pass through the intestinal walls into the bloodstream. This allows the body to utilize these nutrients for energy, growth, and cellular repair.