Brendan participates in the national physical fitness program every yea. each year, he scores in the highest percentile on his test. what fo brendan's high fitness scores show?

Me d: which system contains the heart, blood, and blood vessels? a. muscular b. circulatory c. respiratory d. digestive which system contains the pituitary, adrenal, and thyroid glands? a. respiratory b. circulatory c. endocrine d. reproductive