Navdeep Singh Ranawat is teaching live on Unacademy Plus
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Kunwar Navdeep Singh Ranawat Bachelor Of Pharmacy (2007-2011) 5 years of teaching experience Faculty of Physical Geography, Science & Technology, Environment& Ecology, Daily MCQs, Current Affairs, Reasoning, Computer Hobbies: Reading, Debuting & Teaching Please do , Rate, Review& Recommend Enrol the Course Follow me on unacademy at unacadem https://unacademy.com/user navdeepsranawat-1975
Digestive System Presented By: Kunwar Navdeep Singh
Salivary glands: Mouth Tongue Parotid gland Sublingual gland Submandibular gland Pharynx Esophagus Liver Stomach Spleen Gallbladder Small intestine: Pancreas Duodenum Jejunum lleum rge intestine: Transverse colon Ascending colon Descending colon Cecum Sigmoid colon Appendix Rectum Anal canal Anus
Mouth: The Digestion process starts from our mouth with the help of some enzymes which is present in salivary glands. This Digestion process complete in two different ways one is called Mechanical Digestion and the other one is Chemical Digestion. .
Mechanical& Chemical Digestion: Mechanical digestion refers to the physical breakdown of large pieces of food into smaller pieces called Bolus with the help of Teeth which can subsequently be accessed by digestive enzymes. Chemical digestion, enzymes break down food into the small molecules the body can use with the help of chemical secreted by Salivary Glands. *
Saliva: Saliva is a fluid substance formed in the mouths of animals, secreted by the salivary glands. . Human saliva comprises 99.5% water plus electrolytes, mucus, white blood cells, epithelial cells, enzymes (such as amylase and lipase), antimicrobial agents such as Lysozyme. . Approximately 1.5 litre saliva secrets in a day and it has PH value 6.8.
Enzyme Reactions on Food: Lysozyme enzyme secrets from saliva which is antibacterial in nature and kill the harmful bacteria into food, it is also present in tears . Salivary Amylase (Ptyalin) enzyme present in saliva begins the chemical process of digestion. It Breaks down the carbohydrate into Maltose . Maltase enzyme also secrets from Salivary Glands which is responsible to Convert the Maltose to Simple Sugar.
Oesophagus: After Digestion into mouth the bolus engulfed or slip into Stomach via Oesophagus. This movement of food is called Peristalsis. . The esophagus is a fibromuscular tube, about 25 centimetres long in adults. There is no Digestion occurs in Oesophagus. .
Stomach: After reaching the Food into Stomach, it lasts for 3 to 4 hours, so it is also called the Warehouse of food . HCL secrets from oxyntic cells into stomach which makes the medium of food Acidic (1.5 to 3.5) so that it can not be spoiled into stomach. HCL also converts the Pepsinogen to Active Pepsin and Prorenin to Active Renin. .
Rennin (Chymosin): When the pro rennin converts into active Rennin it will be helpful for the digestion of Casein. . It is widely used in the production of cheese. Casein proteins are commonly found in mammalian milk, comprising c. 80% of the proteins in cow's milk. *
To be continued e.