Flashcards: Energy Systems and Metabolism — 18 cards

ATP — continuous production?

Body constantly synthesizes ATP for energy.

Aerobic vs anaerobic — oxygen use?

Aerobic uses oxygen; anaerobic does not.

ATP-CP system — duration?

Supports effort for 5-12 seconds.

Anaerobic glycolysis — main substrate?

Breaks down glucose into pyruvate and lactate.

Lactate formation — source?

Produced from pyruvate during anaerobic glycolysis.

Aerobic system — primary process?

Uses oxygen to produce ATP via citric acid cycle.

Energy sources — main types?

Carbohydrates, fats, proteins.

Fatty acid oxidation — key process?

Beta-oxidation breaks fats into Acetyl CoA.

Protein contribution — percentage?

Provides 10-15% of energy during prolonged effort.

Creatine phosphate — role?

Rapidly resynthesizes ATP during high effort.

Glycolysis — net ATP?

Produces 2 ATP per glucose molecule.

Lactate — supports?

Allows glycolysis to continue anaerobically.

Citric acid cycle — location?

In mitochondria, producing high-energy molecules.

Electron transport chain — ATP yield?

Generates about 34 ATP per glucose.

Fats — main energy source when?

During moderate, long-duration efforts.

Proteins — energy contribution?

Used when carbohydrate and fat stores are low.

Beta-oxidation — produces?

Generates Acetyl CoA, NADH, FADH2.

ATP production — key point?

Supported by interconnected aerobic and anaerobic systems.