Umm who wanna play t or d

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

Neurotransmitters bind to the to initiate communication. a. neural receptor b. mylar sheath c. synapse d. hormones

Drea has never had alcohol but she believes her friends when they tell her that almost everyone at school drinks on a every day basis. in reality, very few students at school drink alcohol