Please enable JavaScript.
Coggle requires JavaScript to display documents.
Digestion In Human Beings (importance of hygiene habits on handling food…
Digestion In Human Beings
3 main classes of food nutrients
proteins
needed for growth and repair
carbohydrates
immediate form of energyfor the body.
fats
energy supply for the body
how digestion helps the digestive system?
products of digestion are used in cellular processes
digestion is the breakdown of large molecules of food into smaller diffusible molecules
digestive canal
digestive enzymes
complex proteins that speeds up the chemical reactions that involves the breakdown of food
nutrients in food
carbohydrates
digested to sugar
proteins
digested into amino acid
fats
digested into fatty acids and glycerol
classes of enzymes
maltase
react to maltose and digested into glucose(simple sugar)
protease
reacts to proteins an digested into Amino Acids
amylase
reacts to starch and digested into maltose(complex sugar)
lipase
reacts with fats and digested in fatty acid and glycerol
the main parts of the digestive system
large intestine
most water and mineral salts are absorbed in to the bloodstream leaving behind the semi-solid waste known as faeces
small intestine
the pancreas producesa digestive juice that helps to digest the carbohydrates
bile a greenish liquid produced in the liver tat is stored in the gall bladder
stomach
the muscullar bag that pushes the food into the into the intestines
starts the digestion of proteins (no digestion of fats and starch)
hydrocholoric acid and enzymes produced that works best in acid conditions
Oesophagus (gullet)
the muscullar tube that pushes the food into the stomach
mouth
"physical digestion",,saliva will begin the chemical digestion of starch into soluble sugar
importance of hygiene habits on handling food partiles
wash hands because there are many bacterias everywhere that may cause an infection
cooking,cooking helps kills bacteria as they cannot survive high temperatures
packaging food,,,helps prevent food from becoming infected
do not store cooked and raw food together
frozen food shouldn't be refrozen once it has thawed
always cover food so that it will be exposed to the surrounding air as there are many bacteria everywhere