Organ Functions Flashcards
Gallbladder
Stores bile produced by the liver
Stomach?
Produces/secrete stomach, acid and proteins. It is an acid ph2
Anus
Egestion of waste
Large intestine
Re absorbs water
Oesophagus
Muscular tubes into stomach
Small intestine
Continue digestion with enzymes, soluble products of digestion, absorbed the blood here ph 7-8 neutral
Pancreas
Add three enzymes, protease carbohydrase and lipase
Liver
Secretion of bile
Rectum
Stores faeces
Why did the percentage of water vapour decrease over time?
Because as the earth cooled down the steam condensed and fell as rain forming oceans which CO2 then dissolved in
What is the atmosphere mixture
21% oxygen
78% nitrogen
1% noble gases water vapour CO2 etc
Why has who decreased to the Earth atmosphere over time
Bc it was used by plants for photosynthesis dissolved in oceans and formed fossil fuels
Why is evidence for the composition of earth limited
It was billions of years ago so no one could observe
Earth atmosphere today compared to then
There is now more nitrogen
More oxygen
Less carbon dioxide
0.04 CO2
0.9% argon
