Gary is returning home from college and hears a muffled sound. when he follows the noise to the neighbors’ house, he sees a boy gagged and locked in the garage. what is the first thing that gary should do?

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