ANATOMY

Detailed explanation-1: -Digestion is important for breaking down food into nutrients, which the body uses for energy, growth, and cell repair. Food and drink must be changed into smaller molecules of nutrients before the blood absorbs them and carries them to cells throughout the body.

Detailed explanation-2: -Your digestive system breaks down and absorbs nutrients from the food and liquids you consume to use for important things like energy, growth and repairing cells.

Detailed explanation-3: -Function of the Digestive System in Animals The primary functions of the GI tract include prehension of food and water; mastication, salivation, and swallowing of food; digestion of food and absorption of nutrients; maintenance of fluid and electrolyte balance; and evacuation of waste products.

Detailed explanation-4: -Assertion (A): The body breaks down complex substances in food into smaller components in the digestive system. Reason (R): Breaking down of food into simpler substances helps in easy and efficient absorption of nutrients.

Detailed explanation-5: -The small intestine is the most important organ of the digestive system as it serves both, for digestion and absorption. It receives two digestive juices; the bile and the pancreatic juice in the duodenum. These two juices virtually complete the digestion of starch, proteins, carbohydrates, etc.