Respuesta :

pandamille
The endocrine system consists of glands that secrete chemical messengers, called hormones, into the bloodstream. hypothalamus, pituitary, pineal, thyroid, parathyroid, thymus, adrenal, pancreas, and gonads.

Answer:

The correct answer is the endocrine system and 2nd one on edgunity is exocrine

Explanation:exocrine is the only system substances through ducts and endocrine contains glands that secrete hormones into bloodstream