Digestion in MAN

Digestion in Man 

Digestion in mouth of food:

  The process of mechanical and chemical start from mouth digestion.  The teeth grind the food while three  dyads of salivary glands of oral  depression  cache  slaver it contains an enzyme called ptyalin which acts upon  bounce to break them  incompletely into maltose( sugar).  This  nibbled and  incompletely digested food takes the form of a ball called gelcap is  also pushed into the oesophagus.  

 Digestion of food in stomach: 

 Stomach is large bag- suchlike, thick walled structure which stores food as it passes down theoesophagus.Here food is digested chemically as well as mechanically. Internally, its wall contain gastric glands which  cache gastric juice which contains HCI and enzymes called renin andpepsin.HCI kills the  origins present in food. It also softens the food. Renin helps to curdle milk in  babies. Pepsin acts on proteins to break them into peptones. The thick walls cheer up of food.. After staying then for many hours, the food becomes a thick fluid- suchlike chime which is released bit by bit into the small intestine.  

Peristalsis: 

The movement of food from esophagus and on word over to the anus takes place by means of an automatic movement or peristalsis of alimentary  conduit.

  Digestion and  immersion of food in small intestine :

 Stomach followed by a long, narrow tube called small intestine where the remaining process of digestion is completed as well as the  immersion of nutrients from the digestion food takes place. Its first part lying  incontinently after the stomach duodenum which receives a common  conduit formed by the  emulsion of a  conduit coming from the  bitterness bladder of the liver and another  conduit coming from the pancreas. Through these two  tubes, the  stashing of liver called  corrosiveness and and  stashing of pancreas known as pancreatic juice are poured  contemporaneously in the duodenum upon the acidic chyme which is coming from the stomach. Both of these  concealment contain bicarbonate ions which first neutralizes chyme and  also turns it alkaline. 

 Enzymes:

  Enzymes are chemical substance that work as catalyst in chemical  responses of a cell. These proteins are useful as they speed up chemical  responses without being used up by themselves. Enzymes performing the process of digestion are called hydrolytic enzymes. They're buried by digestive.

   Liver:

  The liver is the big and large gland and  organ of the body.  It's sanguine brown in colour. It's located in the  tummy underneath the diaphragm. For the process of digestion, it secretes an alkaline, greenish  unheroic juice called  corrosiveness which is stored in a sac- suchlike  bitterness- bladder attached with it. There are no enzymes in  corrosiveness. It contains some  mariners. Its most important  swab is sodium bicarbonate. It also contains  corrosiveness  colors. still, they aren't involved in digestion. corrosiveness helps in breaking down of larger  motes of fats into small  driblets. This process is called emulsification. It makes the digestion of fats easierI. the small intestine.

   Pancreas: 

 It's a long, splint- suchlike organ  positioned between the duodenum and the stomach. Its  stashing is called pancreatic juice. It's colourless and poured through the pancreatic  conduit into the duodenum. It contains sodium bicarbonate and  numerous enzymes. 

Three important pancreatic enzymes are  bandied below.  

 i) Amylase It breaks down  bounce into maltose. 

 ii) Trypsin It data upon the proteins to convert at into  lower peptides.  

iii) LipaseIt breaks fat  driblets into adipose acids and glycerol. 

 Immersion of food in small intestine:

 Duodenum is followed by ileum, the coming portion of small intestine wher the rest of the digestion is completed by the enzymes present in intestinal juicse buried by the glans present in the walls of small intestine itself. Its enzymes aminopeptidases and disaccharides convert into amino acids and maltose/ lactose/ sucrose into glucose, independently. After the process of digestion of food is completed then, the digested food in the form of answerable  motes glucose, fructose, amino acids, adipose acids glycerol, etc absorbed into the body through  veritably fine cutlet like  protrusions called villi present on the internal walls of ileum.  The villi greatly increase the internal  face area of the ileum. Inside each villus there's a  thick network of blood capillaries and a single lymph vessel or lacteal.Digested food and nutrients absorb the both capillaries. Nutrients other than adipose acids  verbose through the  face cells of villi and are taken into the blood flowing in capillaries of villi. These capillaries join together to form a larger blood vessel called the hepati potal  tone which careas the absorbed food to the liver.