9 Muscle (Metabolism)

Question 1

What are the 3 types of muscle metabolism?

Answer 1

Direct phosphorylation (anaerobic)

Anaerobic glycolysis

Glycolysis

Question 2

Which types of muscle metabolism are anaerobic and which are aerobic?

Answer 2

Anaerobic: direct phosphyrlation and anaerobic glycolysis

Aerobic: glycolysis

Question 3

How long does each type of muscle metabolism last for?

Answer 3

Direct phosphorylation: 15 seconds

Anaerobic glycolysis: 60-90 seconds

Aerobic glycolysis: hours

Question 4

What are the energy sources for each type of muscle metabolism?

Answer 4

Direct phosphorylation: creatine phosphate (CP) reacting with ADP

Anaerobic glycolysis: glucose

Aerobic glycolysis: glucose, pyruvic acid, free fatty acids, amino acids

Question 5

What are the benefits of each type of muscle metabolism?

Answer 5

Direct phosphorylation and anaerobic glycolysis are fast (sprint power) but short lived

Aerobic glycolysis is the most efficient type of metabolism - extracts 32 ADP for each glucose molecule, compared to only 2 ADP in anaerobic glycolysis

Question 6

How much ATP does each type of muscle metabolism produce?

Answer 6

Direct phosphorylation: 1 ATP molecule per CP

Anaerobic glycolysis: 2 ATP molecules per glucose molecule

Aerobic glycolysis: 32 ATP molecules per glucose molecule

Question 7

What are the waste products for each type of muscle metabolism?

Answer 7

Direct phosphorylation: creatine

Anaerobic glycolysis: lactic acid

Aerobic glycolysis: carbon dioxide and water