JC Science- digestive system and nutrition

chapter 4

mechanical digestion and chemical digestion

two types of digestion

a muscular movement in the muscles of the digestive system which causes food to be pushed along the system

what is peristalisis

to break down large food particles into smaller soluble particles

digest defenition

takes in food and chews it

what does the tongue and mouth do

produces amylase

what do the salivary glands do

carries food from the mouth to the stomach

what does the oesophagus do

produces bile to aid the digestion of fat

what does the liver do

stores bile until it is needed in the small intestine

what does the gall bladder do

churns food and adds hydrochloric acid

what does to stomach do

makes enzymes to digest food

what does the pancreas do

absorbs water from food into the blood

what does the colon do

stores faeces for egestion

what does the rectum do

allows faeces to pass from the body

what does the anus do

digests food and absorbs food into the blood

what does the small intestine do

cell,tissue,organ,system,organism

organisation of multicellular organisms

a group of organs working together

system definition

a disease caused by a lack of a particular food

what is a deficiency disease

protein,carb,fat,vitamins,minerals,water

6 nutrients in food

scurvy

deficiency disease for vitamin c

rickets

deficiency disease for vitamin d

osteoporosis

deficiency disease for calcium

anaemia

deficiency disease for iron

benedicts solution

the solution used to test for the presence of glucose in food

ingestion,digestion,absorption,assimilation,egestion

5 steps to provide nutrition for the body

the salivary glands produce the enzyme amylase which is passed in the saliva through tiny tubes in the mouth

how do the mouth and salivary glands work with eachother

the liver produces bile which helps in fat digestion and is passed to the gall bladder to be stored till needed in the small instestine

how do the liver and gall bladder work with eachother

the gall bladder sends bile into the small intestine when it is needed to digest fat

how do the gall bladder and small instestine work with eachother

the pancreas produces a number of enzymes that are passed to the small intestine where they are needed for digestion 

how do the pancreas and small instestine work with eachother