Respuesta :
that secrete their products, hormones, directly into the blood rather than through a duct.
There is several endocrine glands that release hormones, the most active one is the pituitary gland located in the brain
that secrete their products, hormones, directly into the blood rather than through a duct.
There is several endocrine glands that release hormones, the most active one is the pituitary gland located in the brain