Secrete chemical messengers called hormones that circulate within the body via the bloodstream to affect distant organes not include exocrine glands such as salivary glands, sweat glands and glands within the gastrointestinal tract.
Secrete chemical messengers called hormones. These hormones circulate within the body via the bloodstream. This is to affect distant organes not include exocrine glands such as salivary glands, sweat glands and glands within the gastrointestinal tract. The endocrine system is a control system of ductless endocrine glands this.