Digestion and Abs II Flashcards
once lipids are in the enterocyte they are ____ and then packaged into ____
re-esterified, chylomicrons
the chylomicron has a ___ coat over it
lipoprotein
in the liver, the lipids will be made into ____
VLDL, LDL, and HDLs
when you eat a meal, the bile cycles approx. ___ times. It cycles more if ___
3-6 times, there is a lot of fat
in the terminal ilium, the reabsorption of conjugated bile is via _____
secondary active transport with sodium
____ bile can diffuse into the cell because ____
unconjugated, it is lipophilic
____ bile cannot be reabsorbed
secondary
in the jejunum, sodium comes in the cells as ___ goes out. This is possible because of ___
H+, carbonic anhydrase
as Na is absorbed, ___ also comes in to preserve electro-neutrality
Cl-
if iron is in the ____ form, it can diffuse in
hemin
once iron is absorbed, it is ____ for ____ or ____ and ____ to be taken to the ____
bound to ferritin for storage, taken out of the cell by IREG1 and bound to transferrin, liver or bone marrow
we take in ___ of iron per day
3 mg
how do we usually lose iron on a daily basis?
sloughing off of enterocytes
iron is bound because ___
it is toxic
calcium is bound because ____
many systems use it as a 2nd messenger
