Our topic for today is Digestive System in Humans.<br />Digestion is a process in which complex food material is broken down into simpler substances.<br />The digestion of food in humans takes place in the alimentary canal, which is a long tube extending from the mouth to the anus.<br />The different parts of the alimentary canal are buccal cavity, food pipe or oesophagus, stomach, small intestine, large intestine and anus.<br />Two glands namely, liver and pancreas also help in digestion.<br />The food is taken in through the mouth.<br />It is chewed and mixed with saliva in the buccal cavity.<br />Saliva is a digestive juice secreted by the salivary glands.<br />The chewed food enters into the food pipe or oesophagus and is then slowly pushed into a bag like structure called stomach.<br />The food is churned in the stomach to further break it down.<br />The stomach also secretes mucous, digestive juices and hydrochloric acid.<br />The hydrochloric acid kills the bacteria in the food and makes the food acidic.<br />The food then goes into a highly coiled tube called small intestine.<br />The small intestine receives secretions from the liver and pancreas.<br />The liver secretes bile juice while the pancreas secretes pancreatic juice.<br />The walls of the small intestine also secrete juices, which help in further digestion of food.<br />The inner surface of the small intestine has finger like projections called villi.<br />The villi have extensive network of blood vessels.<br />The digested food is then passed into the blood vessels .<br />The undigested food is passed into the large intestine.<br />It is wider than the small intestine.<br />Excess of water and salts are absorbed here and undigested waste is passed out of the body through the anus.<br />Are you looking for a children's channel that isn't too "childish" to suit young and old either <br />Learn shapes, colors, numbers, alphabets and communication skills<br />Educational channel for young children, kindergartens and primary and secondary school students to learn language and life skills<br />Children can explore talk, listen and read through poems, songs, educational cards and lots of funny and fun videos <br />Great for all children including reluctant learners, visual learners, English as second language students, and even children with developmental disabilities such as autism and speech problems<br />Enjoy a great experience to teach children humor, laughter and excitement on our young heroes channel<br />Watch your favorite songs here! Subscribe to our channel for more 3D animation educational videos to make your life as a parent easy! We strive to instill good habits, creativity and ethical foundations through the most entertaining 3D animation.<br />The channel includes meaningful educational stories, funny and entertaining videos, teaching, the use of advanced techniques, artificial intelligence, horror, adventures, entertainment, funny, adventurous, suspense, animation, planetary, cooking, discovery,
