Duodenum
· This is the first 25 cm of the small intestine
· Where ducts from liver and pancreas join info into the duodenum in a single duct
· Receives bile from liver, and pancreatic juice; bile is produced in the liver.
Bile
· This is how we emulsify fat
· Emulsification- cause large fat droplets to disperse in water
· Bile s a mechanical digestive process
· This is mechanical because bile physically rips the fat apart
· Bile aids the digestion and absorb the fats
Pancreas
· The duodenum has a slightly basic pH around 8
· Pancreatic juice is slightly basic because of sodium bicarbonate (NaHCo3), which neutralizes chime. Thick semi liquid, acidic, food material that passes from the stomach to the small intestine
· First job: juice helps protect the rest of the small intestine from the acidity of chime
· Second job: helps break down food
· Pancreatic amylase digests starch
· Tryspin digests proteins
· Lipase digests food
· Nucleus breaks down RNA + DNA
Small intestine
· Maltose [Maltose + H2O à Glucose + Glucose]
· Peptidases [Peptide + H2O à Amino Acids]
· Nucleotides [Nucleotide + H2O à Base + Sugar + Phosphate]
Enzymes and Hormones
· The duodenum is responsible for hormones that trigger the pancreatic duct to open pancreatic juice and bile
