The measure of how well your heart gets oxygen-rich blood to your muscles while you’re exercising is called fitness

a. endurance b. cardiovascular c. anaerobic d. aerobic

Which of the following is a true statement? a. the male sex hormone is called estrogen. b. the female sex hormone is called testosterone. c. both sexes manufacture some amount of the sex hormone associated with the opposite sex. d. only males secrete testosterone and only females secrete estrogen

Which of the following substances would you expect to find in the blood, and not in the lymph? selected answers: calcium glucose calcium glucose estrogen oxygen fatty acids water answers:

In which way does nicotine cause addiction? by stimulating the brain’s pleasure center by increasing blood-sugar levels by decreasing dopamine levels by reducing depression and anxiety