Label the organs marked by arrows and describe their digesti

Label the organs marked by arrows, and describe their digestive functions.

Solution

The arrow at the mouth shows the salivary glands which are parotid, submandibular and sublingual salivary glands.they secrets saliva. The functions of saliva are Salivary alpha amylase aids digestion of starch Saliva has mucin, which helps to lubricate the food, thus helps to mastication Saliva also helps to neutralisation of gastric acid and relieve heart burn when gastric juice regurgitate into the oesophagus The right side triangular organ is the liver. The functions are Metabolism of carbohydrates, proteins and fats Secretion of bile, helps in digestion and absorption of fats and fat soluble vitamins Bile helps to neutralisation of acid chyme from the stomach Bile also helps in solubility of cholesterol Bile also helps in activating lipase in the intestine. Another organ at left side is stomach which is hallow muscular organ the functions are Chief cells which secretes pepsinogen helps to digest proteins into polypeptides. Perital cells secretes HCL, helps in iron absorption and activates the pepsinogen to pepsin and prosecretin to secretin HCL also stimulate the pancreatic juice secretion Cardiac glands secretes soluble mucus Pyloric glands helps to secrets gastrin for the digestion Digestion of food mainly occurred in stomach. The bottom arrow shows the rectum, the functions are Helps in defecation, has internal and external anal sphincters. Voluntary defecation by applying pressure Any abnormality leads to constipation and diarrhoea.