nutrition in animal

1. NUTRITION IN ANIMALS
DEFINATION:-NUTRITION IS DEFINED
AS THE PROCESS OF INTAKE OF FOOD
AND ITS UTILIZATION IN BODY .
STEPS OF NUTRION
 INGESTION
 DIGESTION
 ABSORPTION
 ASSIMILATION
 EGESTION

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DIGESTIVE SYSTEM IN HUMAN
Organs involved
 Mouth
 Oesophagous
 Stomach
 Small intestine
 duodenum
 Ileum
 jejunum
large intestine
 colon
 Rectum
 anus

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Mouth Cavity
Tongue
Structure:
 fleshy Muscular organ attached at the
back to the floor of buccal cavity
Four taste buds;-detects the taste
1.Sweet 2.Sour.
3.Salty 4.Bitter

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Function of tongue
Helps speaking, licking.
Mixes saliva with food and
help in swallowing .
Detects the taste the food.

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Teeth
»Types of
teeth
According structure:-
Incisor
Canine
Molar
pre-molar

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According to function
Cutting/biting
Tearing
grinding

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Human tooth

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Large intestine
Wider shorter than small intestine ,1.5m long
PARTS OF L.I
Caecum-
Colon: 1.ascending,2.descnding.3.transverse
Rectum
Anus
Function
residual absorption and excretion of the
waste as formed faces or (stool). the
process of removal of waste is known as
egestion

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Small intestine
duodenum
Ileum
jejunum
Function
function being residual
digestion and absorption with
the help of various enzymes in
the secretion of the small
intestine and pancreatic juices
and bile into small intestine.

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Oesophagus
It is known as the food pipe
It runs along the neck and chest
It helps in movement of food due to
contraction and expansion of the
muscles known as peristalsis
It does not help in digestion
It also does not allow the movement
of food

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Stomach
Structure
Thin walled ,Elastic bag,flattened U shape organ.
Widest part of the alimentary canal
Function
It secretes mucous,HCL and digestive juices
 Mucous:-protect inner lining of stomach
 HCL:- kills bacteria that enters along with food
It makes food acidic
 Digestive juices:- helps in digestion of proteins

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Small intestine
Highly coiled
7.5 m long
It receives secretion from liver and
pancreas

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