41) The breakdown of glucose to provide quick energy to the body is called

A) fatty acid breakdown.

B) ketoacidosis.

C) glucolysis.

D) glycolysis.

42) Placing an extra physical demand on the body to improve the fitness level is called

A) the overload principle.

B) carbohydrate loading.

C) ergogenic training.

D) lactic-acid loading.

43) Which of the following weekly routines most closely follows the FIT principle recommendations to improve flexibility?

A) two sets of weight lifting 5-lb barbells twice a week

B) swimming 30 minutes twice a week at 64% max heart rate

C) full-range-motion yoga stretches (twice per stretch) twice a week

D) thirty-minute Pilates stretching class five mornings a week

44) The intensity of a physical activity is defined as

A) the amount of effort expended.

B) how long a training session lasts.

C) how often a training session occurs.

D) the availability of ATP for energy.

45) Eating frequent small meals throughout the day is called

A) carbohydrate loading.

B) grazing.

C) glycolyzing.

D) ketoning.

46) Carbohydrate loading maximizes the amount of which substance stored in skeletal muscles?

A) calcium

B) hemoglobin

C) glucose

D) glycogen

47) The primary way the body loses heat is through

A) urine.

B) feces.

C) sweating.

D) respiration.

48) After about three seconds of exercise, which substance is broken down to help regenerate ATP?

A) glucose

B) pyruvic acid

C) creatine phosphate (CP)

D) lactic acid

49) The combination of heart, lungs, and circulatory system that supplies oxygen and nutrients to working muscles is known as the

A) cardiorespiratory system.

B) musculoskeletal system.

C) enteric nervous system.

D) central nervous system.

50) Which of the following is NOT a long-term, irreversible effect of steroid use?

A) liver damage

B) delayed closure of the growth plates of the long bones

C) severe acne

D) infertility