GI Part 6- 2 Flashcards
What does ferroportin pump out of cell?
Iron
What does apotransferrin convert into?
Transferrin
Where does transferrin go with the blood to transport iron?
Bone marrow for RBC’s
During absorption of vitamins in the small intestine:
Panthothenic acid + poly glut = ______ acid
Folic
What pathway hydrolyzes large molecules to produce ATP, NADH?
Catabolic pathway
What are the energy yielding nutrients for the catabolic pathway? (3 of them)
Carbs, fats, and proteins
What are the energy poor end products of the catabolic pathways?
CO2, H20, NH3
What pathway combines small molecules to form more complex molecules? Requires energy, ATP-ADP, and often chemical reductions, NADH?
Anabolic pathways
What are the complex molecules produced by the anabolic pathways?
Proteins, polysaccharides, lipids, nucleic acids
What are the precursor molecules of the anabolic pathways?
Some amino acids
Sugars
Fatty acids
Nitrogenous bases
What phase of energy metabolism is used during active digestion and absorption of nutrients from the gut?
Absorptive phase
What phase of energy metabolism is used between meals? Nutrients are being mobilized from storage pools to tissues?
Post-absorptive phase
What phase of energy metabolism is used during food deprivation?
Prolonged energy deficiency
What phase of energy metabolism is when the following occurs:
Insulin is released —>
Glucose is taken up by liver = glycogen and FA —>
FA are sent out of liver in VLDL to adipose or muscle —>
AA are used for protein synthesis or are delaminated for gluconeogenesis
Absorptive phase
What phase has:
NO active absorption
Glucoagen is released —>
Gluconeogenesis and glucogenolysis are stimulated —>
AA are mobilized from muscle
Post-absorptive phase
