Nutrition in human beings #Life processes :CBSE Class 10 Science |Biology syllabus : ncert class 10
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Nutrition in human beings #Life processes :CBSE Class 10 Science |Biology syllabus : ncert class 10


Nutrition in Human beings Food enters of a body through mouth and travels through a long canal which ends at anus This canal is called Elementary canal. In the mouth the food is ground to a paste by teeth and saliva Saliva is a watery fluid not only makes the food soft and wet it also has an enzyme called Saliva amylaze which partially digested the sugars Now the food has to reach the stomach through a pipe called esophagus the muscles of the esophagus contact atomically to move the food through it into the stomach. Stomach is a large muscular hallow organ in which the food is thoroughly mix it with more digestive juices Secreted by gastric glands present in the walls of this stomach These juices include 1) Pepsin : a protein digesting enzyme 2) Hydrochloric acid to provide acidic medium for the proper action of Pepsin. and 3) Mucus to prevent the damage of stomach wall by the action of HCL at the end of this stomach Sphincter Muscles slowly releases the food into the small intestine the longest part of the Elementary canal Which is highly coiled to get accommodated in small space. It receives pancreatic juice from the pancreas intestinal juices from the glands in the intestines and bile juice from the liver pancreatic juice and intestinal juices contain enzymes like Trypsin, Lipase pancreatic amylase peptidases and nucleases by does two things 1) It breaks the fats into smaller droplets Providing more surface area for the quick action of enzymes 2) Bile makes the intestinal Ph to alkaline So by that the digestion of fats and carbohydrates is facilitated these enzymes finally make the Carbohydrates to sugars proteins to Amino acids and fats to fatty acids and glycerol The inner lining of the small intestine has finger-like projections called Villi Where the nutrients derived in digetsion are absorbed into the bloodstream? The unabsorbed food is sent into a large intestine where water is absorbed and the rest is excreted out through anus you

32 thoughts on “Nutrition in human beings #Life processes :CBSE Class 10 Science |Biology syllabus : ncert class 10

  1. Thanks a lot…!!πŸ˜€πŸ˜€πŸ˜€ helps me to understand it so easily πŸ‘πŸ‘πŸ‘ŒπŸ‘πŸ‘

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