Alimentary canal is defined as a long tube that extends from mouth to anus . it is also called gut .
it comprises of different organs that coordinate with each other and forms an organ system called digestive system .
Mouth - responsible for intake of nutrition ( food )
Tongue - responsible for mastication as well as tasting the food .
Teeth - responsible for grinding , cutting and chewing the food
salivary gland - responsible for wetting of food for swallowing
Oesophagus - responsible for transfer from buccal cavity to stomach by peristaltic movement .
stomach - secretes HCl that makes the medium acidic , pepsin breaks down protein .
small intestine - breaks down nutritional molecules .
large intestine - absorbs excess water and regulates stool consistency and aids in egestion .