Muscular System

• The intensity of exercise that can be performed aerobically depends on a person's maximal oxygen uptake and lactate threshold (p. 343)

The body consumes extra oxygen for a period of time after exercise has ceased. This extra oxygen is used to repay the oxygen debt incurred during exercise (p. 344)

Glycogenolysis and gluconeogenesis by the liver help to supply glucose for exercising muscles (p. 343)

Trained athletes obtain a higher proportion of skeletal muscle energy from the aerobic respiration of fatty acids than do nonathletes (p. 346)

Muscle fatigue is associated with anaerobic respiration and the production of lactic acid (p. 346)

The proportion of energy derived from carbohydrates or lipids by exercising skeletal muscles depends on the intensity of the exercise (p. 343)

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Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

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