Question

Where is digested food absorbed into the blood in the human body?

Answer 1

Digestion is a process in which large insoluble food molecules are broken down into small water-soluble food particles so that they can be absorbed by the blood. This process includes six steps: ingestion, propulsion, mechanical digestion, chemical digestion, absorption, and excretion.

Complete answer:
The dietary intake of food is taken through the buccal cavity or the mouth of the human. The food particles are emulsified by the salivary secreted by the salivary glands present at the ends of the buccal cavity. The tongue helps in pushing the food down from the mouth to the stomach through the esophagus or the windpipe. The food slides down the esophagus through peristaltic movements. Inside the stomach, the food particles are churned and mixed with gastric juices and pancreatic juices such as hydrochloric acid, lipases, etc. for proper breakdown of complex molecules into simpler forms for easy absorption. The churned food then reaches the small intestine of the body. The small intestine has microscopic hair-like projections that help in the absorption of essential nutrients from the food substances and mixes them with the blood that transports these essential nutrients to the whole body. After absorption, the leftover food particles reach the long intestine where the nutrients left in the food are reabsorbed and transported into the blood. The leftover waste material is excreted from the body running from the rectum to anus.

Note:
Most of the food substances that a human consumes are carbohydrates. Carbohydrate is a biomolecule that is one of the most essential macronutrients required by the human body. Glucose is one of the main carbohydrates present in our body and is the primary source of energy.