3.5 Chemical digestion absorption and overview metabolism
Home > Flashcards > Print Preview
The flashcards below were created by user
on FreezingBlue Flashcards
. What would you like to do?
Breaks down compounds by adding water
Water soluble products are absorbed by?
GI tract to hepatic portal veins
Lipids are absorbed by
lacteals are ____________ that drain to
Lymph capillaries that drain to thoracic duct
Thoracic duct drains into
CHO hydrolysis) where does it begin?
Oral cavity by salivary amylase
CHO hydrolysis) stomach
Bolus mixers with gastric juice but there is no enzymatic breakdown
CHO hydrolysis) small intestine: what resumes breakdown of CHO?
CHO hydrolysis) small intestine: what stimulate the release of pancreatic amylase?
CHO hydrolysis) small intestine: what does pancreatic amylase do?
Small oligosaccharides digested to monosaccharides, disaccarhrides in small intestine in lumen
CHO hydrolysis) small intestine: brush border enzymes, dissacharides are digested by
dissacharidases brush border enzyme that cleave disaccharides into monosaccharides
CHO hydrolysis) small intestine: brush border enzymes are located
Embedded in microvilli of absorptive cell
PRO) oral cavity?
No chemical breakdown just mastication going on
PRO) stomach: pepsin
Cleaves at tyrosine and phenylalanine which yields small polypeptides and free amino acids
PRO) stomach: what activates Pepin?
PRO) small intestine: Pro are exposed to
Proteases from pancreas
PRO) small intestine: which 2 proteases attack PRO?
PRO) small intestine: what does carboxypeptidase do?
Cleaves polypeptides into dipeptides, amino acids
PRO) small intestine:bursh border enzyme Cleaves
Remaining dipeptides into amino acids
n.a) small intestine: what breaks down N.A?
n.a) small intestine, brush border enzymes
Breaks Na.A down to sugar, phosphate, nitrogen, bases
Lipids) oral vacity
Mixing with gastric juices
Lipids) small intestine: 2 things
-emulsification by bile salts
emuslfiaction process by bile salts (3)
The hydrophobic region inserts itself into the large lipid droplet
While the charged hydrophilic region remains in contact with water based enviroenmtn
- Breaks up the large droplet into smaller droplets which are now surrounded by bile
- *called micelles
Lipids) small intestine: pancreatic lipase (4)
Breaks down lipids into FFA, glycerol, monoglycerides, cholesterol
Absorption) CHO (2)
--secondary active transport couple with Na or facilitated diffusion
Facilitated diffusion to blood
Absorption) PRO (2)
Secondary active transport absorption couples with NA
Active transport to bloodstream or diffusion
Absorption) lipids initial step to get into cell
Micelles diffuse inside cell bc they are lipid based
Absorption) lipids: what happens right after it enter cell?
They get resynthesized into tryacylglyceorls
Absorption) lipids: after resynthesization they are coated with PRO which are now called?
Absorption) lipids: where are chylomciorns absorbed?
Absorption) lipids: process from lacteal to subaclavian (4)
Lacteal > lymph > thoracic duct > subalcaivin vein
Absorption) lipids: in capillaries : lipoprotein lipase...
Cleaves tri to FFA and glycerol
Absorption) lipids: where is liporpeotin lipase located?
Capillary endothelial cell
N.A are absorbed
- By blood stream from intestinal epithelial cells
- *similar to CHO and PRo
Absorption) vitamins : chemical digestion?
No chemical digestion
Absorption) vitamins : fat soluble absorbed with
Absorption) vitamins : water soluble ...
Absorption) vitamins : vii b 12 and intrinsic facts
Absorbed together in distal ileum
Absorption) ions: Na
Na transport with glucose and A.A then pumped into bloodstream
Absorption) ions: K diffusion
Gradient created by osmosis
Absorption) ions: iron and calcium (2)
Iron actively transported in
Calcium regulated by vita d & parathyroid hormone
Absorption) ions: Chloride (2)
Both passive and active
Often exchange with bicarb
Absorption) water, what eprcet is absorbed?>
Absorption) water , where is most absorbed?
Absorption) water, remainder water absorbed ?
- Large intestine
- *dehydrated the waste
Metabolism overview) 6 things that can lead to synthesis of ellular structures, energy containing compounds?
-stored tri and diet
-stoeg glycogen and diet
-stored protein and diet `
Absorptive state ) after meal, tissues like muscle, liver, adipose absorb
Macros from blood
Post absorptive state) glucagon simulated by?
Decrease in blood glucose
Post absorptive state) produce (3)
atp co2 and h2o
Insulin control stimulated by
Increased blood glucose
Insulin control can be stimulated by (3)
cck gastrin and secretin
What would you like to do?
Home > Flashcards > Print Preview