digestion in human being NCERT class7
Answers
Answer:
☑️Your pancreas makes a digestive juice that has enzymes that break down carbohydrates, fats, and proteins. The pancreas delivers the digestive juice to the small intestine through small tubes called ducts. Liver. Your liver makes a digestive juice called bile that helps digest fats and some vitamins......
Answer:
Explanation:
Human beings exhibit a holozoic mode of nutrition involving five basic steps i.e., ingestion, digestion, absorption, assimilation, and egestion.
Digestion: The process by which food is broken down into simple absorbable substances is called Digestion. Digestion of food takes place in the digestive system. The digestive system is composed of the alimentary canal and associated glands. Digestion in man is an extracellular process. Humans take food through the mouth, digest the food and finally, the undigested food is removed from the body. The food passes from the oral cavity and finally, the undigested food is defecated through the anus.
It is a complex process involving the following steps:
Ingestion – Ingestion refers to the intake of food. Ingestion takes place through Mouth
Digestion – Digestion refers to the breakdown of ingested food into simpler forms. Teeth, Stomach, Small intestine and secretion from various glands help in Digestion
Absorption – Absorption refers to the process in which digested food is absorbed into the body fluids (Blood & lymph). Small intestine plays a major role in Absorption
Assimilation – Assimilation refers to the process in which absorbed food is transported to different cells of the body
Egestion – Egestion refers to the process of removal of undigested food from the body. Large intestine plays a major role in Egestion