There are four steps in the digestion process: ingestion, the mechanical and chemical breakdown of food, nutrient absorption, and elimination of indigestible food.

Why is digestion important? Digestion is important because your body needs nutrients from food and drink to work properly and stay healthy. Proteins, fats, carbohydrates, vitamins, minerals, …

This chapter will look at the steps of digestion and absorption and how your body breaks down the food into usable components. Additionally, we will investigate digestive diseases and disorders.

Processes of Digestion and Absorption. Food is the body’s source of fuel. The nutrients in food give the body’s cells the energy they need to operate. Before food can be used it has to be …

May 9, 2025 · Digestion doesn’t begin in your stomach. It starts the moment you smell, see, or even think about food. That’s when your salivary glands kick into gear, producing a fluid that …

Digestion occurs when food is moved through the digestive system. This process begins in the mouth and ends in the small intestine. The final products of digestion are absorbed from the …

Nov 27, 2025 · Although the small intestine is only 3 to 4 cm in diameter and approximately 7 metres in length, it has been estimated that its total absorptive surface area is approximately …

Dec 15, 2025 · Digestion refers to the process of the mechanical and chemical breakdown of food into smaller constituent molecules, which can then be absorbed and utilized by the body.

Test your knowledge of the skills in this course. How does the human body work? - Class 11. Meet the gastrointestinal tract!

Apr 4, 2025 · Explore the digestion & absorption process: how your body breaks down food, nutrient absorption, malabsorption causes, & nursing implications.