Lecture 18

Question 1

Liver uses for Glu-6

Answer 1

-put into glycogen -released as blood glucose - put through pentose phosphate pathway -Oxidized to pyruvate and used in Krebs to make ATP -used to synthesize Fatty acids and Cholesterols

Question 2

liver in amino acid metabolism

Answer 2

AA taken up and used to make protein

• plasma protein
• processing nitrogen in urea clycle
• major role in urea cycle
• converted to Acetyl-coa to make Fatty acids

Question 3

liver in lipid generation

Answer 3

• generating acetyl coa
• The only organ to make Ketone Bodies (when glucose is low)
• to make lipids/ FA

Question 4

ATP replenishment in resting muscle

Answer 4

phosphocreatine: regenerate ATP by transferring phosphates, similar to what happens in glycolysis

Question 5

regeneration of ATP in active muscle

Answer 5

the buildup of phosphocreatine is then used to keep ATP at optimal levels when in movement

Question 6

phosphagen

Answer 6

buffers active phosphate

Question 7

used in muscle contraction when at rest

Answer 7

FA, ketones, & little bit of blood glucose

Question 8

anaerobic sources of ATP generaton in muscles

Answer 8

glycolysis and phosphagen

(do not require O₂)

Question 9

aerobic sourcecs of ATP in muscles

Answer 9

pyruvate oxidation & lipoisis

(require O₂)

Question 10

how does the Cori cycle replenish muscle glucose

Answer 10

lactic acid made from anaerobic activity (glycolysis) → taken up by the liver → converted to glucose → glu returned to muscles to be used

Question 11

% VO₂ max is

Answer 11

the max amount of oxygen volume that you can use

(indication of max effort possible)

Question 12

What is the RER?

Answer 12

Respitatory Emission Rate: the ration of CO₂ emitted as O₂ is consumed, measured by breathing