Definitions for "Endocrine system"
glands that secrete hormones into the bloodstream. (76) endorphins: neurotransmitters that play a role in pleasure, pain relief, and other functions. (74)
The organ system that sends signals throughout the body using hormones, which generally travel through the blood. This system consists of the endocrine glands and other organs that produce hormones.
The system of glands and other structures that secrete hormones into the bloodstream, including the adrenals, ovaries, pancreas, pineal, pituitary, testicles, and thyroid. These hormones then travel through the bloodstream to target tissues.– See also Hormonal Synergy