Human Digestive System | मानव पाचन तंत्र | Full And Easy Explanation | Life Process | Class 10th

Human Digestive System | मानव पाचन तंत्र | Full And Easy Explanation | Life Process | Class 10th Hello guys welcome to my channel @mathssciencetoppers In this video we are going to discuss about The human digestive system Structure of the Human Digestive System: The human digestive system comprises of the alimentary canal and associated digestive glands. Alimentary Canal: It comprises of mouth, oesophagus, stomach, small intestine and large intestine. Associated Glands: Main associated glands are Salivary gland Gastric Glands Liver Pancreas Mouth or Buccal Cavity: The mouth has teeth and tongue. Salivary glands are also present in the mouth. The tongue has gustatory receptors which perceive the sense of taste. The tongue helps in turning over the food so that saliva can be properly mixed in it. Teeth help in breaking down the food into smaller particles so that, swallowing of food becomes easier. There are four types of teeth in human beings. The incisor teeth are used for cutting the food. The canine teeth are used for tearing the food and for cracking hard substances. The premolars are used for the coarse grinding of food. The molars are used for fine grinding of food. Salivary glands secrete saliva: Saliva makes the food slippery which makes it easy to swallow the food. Saliva also contains the enzyme salivary amylase or ptyalin. Salivary amylase digests starch and converts it into sucrose, (maltose). Oesophagus: Taking food from mouth to stomach by Peristaltic movement. Peristaltic movement: Rhythmic contraction of muscles of the lining of the alimentary canal to push the food forward. Stomach Stomach is a bag-like organ. Highly muscular walls of the stomach help in churning the food. The walls of the stomach secrete hydrochloric acid. Hydrochloric acid kills the germs which may be present in food. Moreover, it makes the medium inside the stomach as acidic. The acidic medium is necessary for gastric enzymes to work. The enzyme pepsin, secreted in the stomach, does partial digestion of protein. The mucus, secreted by the walls of the stomach saves the inner lining of the stomach from getting damaged from hydrochloric acid. Small Intestine: It is a highly coiled tube-like structure. The small intestine is longer than the large intestine but its lumen is smaller than that of the large intestine. The small intestine is divided into three parts, like duodenum, jejunum and ileum. Liver: Liver is the largest organ in the human body. The liver manufactures bile, which gets stored in the gall bladder. From the gall bladder, bile is released as and when required. Pancreas: Pancreas is situated below the stomach. It secretes pancreatic juice which contains many digestive enzymes.Bile and pancreatic juice go to the duodenum through a hepatopancreatic duct. Bile breaks down fat into smaller particles. This process is called emulsification of fat. After that, the enzyme lipase digests fat into fatty acids and glycerol. Trypsin and chymotrypsin are enzymes which digest protein into amino acids. Complex carbohydrates are digested into glucose. The major part of digestion takes place in the duodenum. Large Intestine: Large intestine is smaller than the small intestine. Undigested food goes into the large intestine. Some water and salt are absorbed by the walls of the large intestine. After that, the undigested food goes to the rectum, from where it is expelled out through the anus. Large Intestine bbsorb excess of water. The rest of the material is removed from the body via the anus. (Egestion). #digestivesystem #lifeprocess #science #biology #class10th #cbse #ncert #humandigestivesystominhindiandenglish #structureofdigestivesystem #functionofdigestivesystem I hope you find this video helpful Don't forget to like subscribe share and press the bell 🔔 icon for the latest update....