Question

Explanation of alimentary canal of man

Answer 1

Human digestive system involves various parts which performs different functions where in digestive juices with enzymes takes part

alimentary canal is a long tube extending from mouth to anus

process of taking food in the body is called ingestion

mastication of food takes place in mouth which leads to the formation of bolus

during mastication ptyalin present in saliva breaks down carbohydrate into maltose and dextrine

after mastication bolus passes through oesophagus by peristalsis and reaches stomach

stomach contains gastric glands which secretes gastric juice and hcl due to which protein gets partially digested by pepsin present in gastric juice

as a result of churning chyme is formed which reaches duodenum through pyloric sphincter

bile secreted by liver and pancreatic juice secreted by pancreas gets released into duodenum

emulsification of the fats is done by bile

lipase is pancreatic juice converts emulsified fats into fatty acids and glycerols while trypsin helps in partial digestion of proteins

peptidases is an intestinal juice converts peptides of proteins into amino acids

absorption of digested food takes place through villi present in walls of small intestine

undigested food moves into large intestine where water is absorbed

faeces are stored in rectum temporarily and are expelled out through anus which is also called egestion or defeacation

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Answer 2

$\huge\mathbb{HoLa\: Mate!!!}$

HeRe iS uR aNsWeR❣‼

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$\huge\boxed{Alimentary\: Canal}$

➡Alimentary canal, also called digestive tract, pathway by which food enters the body and solid wastes are expelled.

➡The alimentary canal includes the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus.

➡The human digestive system as seen from the front. Encyclopædia Britannica

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