digestive system

The digestive system 

Recap 

1. 3 joints - synovial(free movement eg:elbow), cartilaginous (moves a little eg:pelvis),  fibrous (no movement)

2. In the middle of the bone is bone marrow(makes white blood cells)

We need glucose for cellular respiration 

Minerals and vitamins for growth and repair

Enzymes - biological catalysts - break down large molecules (macromolecules) into smaller molecules (micromolecules). This is digestion

Fats - fatty acids

Proteins - amino acids

Carbohydrates - simple sugars

Some nutrients are already micronutrients, like salts, vitamins, minerals and simple sugars

Macronutrients like fats, proteins and carbs need digesting  

Stomach acid kills bacteria not digests food 

Duodenum 

Physical digestion 

no

Chemical digestion 

Yes. gallbladder produces bile (emulsifies fats) and the liver produces a neutralizer for our chyme, bringing the ph up to 6/7 again. AMylase and lipase are now introduces…