RELAXATION SCIENCE

  DIGESTIVE GLANDS Salivary gland   Saliva is mainly produced by three pairs of salivary glands, the parotids (cheek), the sub-maxillary/submandibular (lower jaw) and the sub-linguals (below the tongue).  These glands situated just outside the buccal cavity secrete salivary juice into the buccal cavity. liver  Liver is the largest gland of the body weighing about 1.2 to 1.5 kg in an adult human.  It is situated in the abdominal cavity , just below the diaphragm and has two lobes. The hepatic lobules are the structural and functional units of liver containing hepatic cells arranged in the form of cords.  Each lobule is covered by a thin connective tissue sheath known the Glisson's. The bile secreted by the hepatic cells passes through the hepatic ducts and is stored and concentrated in a thin muscular sac known the gall bladder.  The duct of Gall bladder (cystic duct) along with the hepatic duct from the liver forms the common bile duct The bile...

  DIGESTIVE SYSTEM 👉 This process of conversion of complex food substance to simple absorbable forms is known as DIGESTION.   👉 The alimentary canal opening the mouth and posterior/ending through the anus . MOUTH 👉 The mouth area is known as buccal cavity / oral cavity. 👉 The oral cavity has number of teeth and muscular tongue. 👉 Each tooth is embedded is a socket of jaw bone. This type of attachment is known as THECODONT. 👉 Majority mammals two set of teeth, set of milk/deciduous teeth replaced by a set of permanent/adult teeth . This is known as Diphyodont 👉 Adult human has 32 permanent teeth  which are 4 types Incisors (I), Canine (C), premolars (PM) and Molars (M). 👉 Dental formula 2123/2123 👉 The hard chewing surface of the teeth , made up enamel , helps in the mastication of food.  👉 The tongue is a freely movable muscular organ attached to the floor of the oral cavity by the frenulum .  👉 The upper surface of the tongue has small projec...