Human Digestive System
involves
- the breaking down of large food molecules into small food molecules
- end products are used for cellular processes
- enzymes speed up the process of digestion
Nutrients in food
circulatory system
- transports the end products of digestion around the body
works with
Carbohydrates
Fats
Proteins
- source of energy for processes
- rich source of energy
examples include: bread, rice, starch
- keep us warm
examples include: butter
- for growth and repair
examples include: meats
Alimentary canal
consists of
digests
is made of
mouth
stomach
small intestine
large intestine
anus
carbohydrates in saliva turn starch and other carbohydrates into maltose
proteases in gastric juice turn proteins into simpler proteins
carbohydrases, proteases and lipases turn maltose into glucose, simpler proteins into amino acid, and fats and fatty acids and glycerol respectively
Digestion is completed here and digested food is absorbed into the bloodstream
Only undigested food moves from here to large intestine
Water is absorbed from undigested food
waste (undigested food) is removed from the body as faeces