Description

The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion. Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body.It takes around 24 hours for your dinner to wind its way through the nine-metre-long digestive tract. On its trip, it’s mixed with acids and digestive juices, and squeezed and squelched until all the nutrients that the body needs are absorbed. Then, the smelly leftovers, along with billions of dead bacteria, are ready to exit the body.