How digestive system works

 Digestion is the process by which the food we eat is broken down into smaller components that can be absorbed and used by the body. It is a complex process that involves several organs and occurs in several stages.

Mastication (chewing): The first stage of digestion begins in the mouth, where food is chewed and mixed with saliva. Saliva contains an enzyme called amylase that starts to break down carbohydrates into simple sugars.

Swallowing: Chewed food, now called a bolus, is then swallowed and travels down the esophagus to the stomach through a series of muscular contractions called peristalsis.

Stomach: In the stomach, the food is mixed with gastric juices, which contain hydrochloric acid and the digestive enzyme pepsin. Pepsin breaks down proteins into smaller peptides, and the acidic environment of the stomach helps to kill any harmful bacteria that may be present in the food.

Small intestine: Chyme then moves into the small intestine, where it is mixed with bile (produced by the liver and stored in the gallbladder) and digestive enzymes (produced by the pancreas) to further break down the carbohydrates, proteins, and fats into their smallest components (glucose, amino acids, and fatty acids, respectively). These smaller components are then absorbed into the bloodstream through the walls of the small intestine and transported to the liver for processing.

Large intestine: The remaining mixture of undigested food and waste products moves into the large intestine, where water and electrolytes are absorbed, and the mixture is formed into feces. 

This is a general overview of the digestive process. The exact timing and details can vary depending on factors such as the type and quantity of food consumed, as well as individual differences in anatomy and metabolism.