Chapter 16 – Digestion and Absorption
Digestion and Absorption is an important chapter in Class 11 Biology that explains how the human body breaks down food into simpler substances and absorbs nutrients for energy, growth, and repair. The process of digestion involves both mechanical and chemical breakdown of food within the digestive system.
This chapter describes the structure and functions of the alimentary canal and associated glands such as the salivary glands, liver, and pancreas. It explains the role of digestive enzymes in breaking down carbohydrates, proteins, and fats. The process of absorption mainly occurs in the small intestine through structures called villi, which increase the surface area for nutrient uptake.
The chapter also covers disorders of the digestive system such as indigestion, constipation, vomiting, and jaundice. Understanding digestion and absorption is essential for exams like CBSE and NEET, as it forms the basis of human physiology concepts.
Digestion and Absorption NCERT
