Bile is made by liver, stored in gallbladder and used in small intestine
Bile emulsifies fats and neutralises stomach acid
Amylase is produced by salivary glands, pancreas and small intestine
Amylase breaks down starch into sugars by catalysing reaction in mouth and small intestine
Proteases is produced by stomach, pancreas and small intestine
Protease catalyses breakdown of proteins into amino acids in stomach and small intestine
Lipase is produced by pancreas and small intestine and is secreted in the small intestine
Lipase catalyse the breakdown of lipids into fatty acids and glycerol
Protease enzymes work best in acidic conditions and glands of stomach wall produce hydrochloric acid for this
Proteases, amylase and lipase work best in alkaline conditions in small intestine
Villi are adapted to absorb soluble food efficiently
Villi have large surface area to absorb food molecules by active transport and diffusion, thin wall to provide short diffusion path and good blood supply to carry food molecules away to maintain a conc gradient
A tissue is a group of cells of similar structure working together to perform a particular function
Organs are made from group of different tissues working together to perform particular function
Organ systems are a group of organs with related functions, working together to perform body functions within the organism
Digestive system includes glands like pancreas and salivary glands, stomach, liver, small intestine , large intestine
In digestion, glands like pancreas and salivary glands produce digestive juices containing enzymes
In digestion, stomach is where digestion takes place
In digestion, liver produces bile
In digestion, small intestine where digestion occurs and has large number of villi where absorption of soluble food occurs
In digestion, large intestine where water is absorbed from undigested food producing faeces