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DIGESTIVE SYSTEM, CHEMICAL DIGESTION SHORTENED FORM - Coggle Diagram
DIGESTIVE SYSTEM
SMALL INTESTINE
Pancreatic amylase
Fully digests remaining carbohydrates
To disaccharides
Carbohydrase (e.g, maltase)
To monosaccharides
Pancreatic protease (e.g. trypsin)
Fully digests remaining proteins
Peptide chains/ Polypeptide
Proteases
To amino acid
Pancreatic lipases
Fully digests fats
To fatty acids + glycerol
Absorption into blood
Walls have villi and microvilli (found on cell walls which make up intestine walls)
Increases surface area to volume ratio
Increases rate of absorption
STOMACH
Chemical Digestion
Gastric juice
Gastric protease
Partially digests proteins
To peptide chains/ polypeptide
Hydrochloric acid
Provides acidic environment for digestion of proteins by pepsin
Kills microorganisms
Denatures (destroy) salivary amylase
Physical Digestion
Churns food into smaller pieces
Has muscles that control the movement of substances in and out of the stomach
MOUTH
Physical Digestion
Saliva softens food
Teeth cuts food into smaller pieces
Chemical Digestion
Salivary amylase
Partially digests carbohydrates (starch)
RECTUM
Has muscles that control food movement into anus
Temporarily stores indigested food
GULLET
Muscles expand and relax alternatively
To push food down towards the stomach
ANUS
Excretion of waste in the form of faeces
LARGE INTESTINE
Remaining water and minerals are absorbed
CHEMICAL DIGESTION
SHORTENED FORM
CARBOHYDRATES (Starch)
Saliva amylase (in mouth)
Partially digests carbohydrates into disaccharide
Remaining carbohydrates (in small intestine)
Pancreatic amylase
Disaccharides
Carbohydrases (in small intestine)
Fully digests disaccharides into monosaccharides
PROTEINS
Gastric protease (in stomach)
Partially digests protein into peptide chains/ polypeptide
Proteases (in small intestine)
Fully digests peptide chains/ polypeptide into amino acid
FATS
Pancreatic lipases -> Fatty acids + Glycerol