What systems provide regulation of the activity of the animal’s organism?

For the coordinated work of all organs and systems, its regulation is necessary. The regulatory systems of the animal body are nervous and endocrine. The first regulates by transmitting nerve impulses. The action of a nerve impulse is almost instantaneous, but short-lived. The endocrine system is a collection of endocrine glands. These glands produce hormones that are released into the bloodstream. She carries them around the body. The effect of hormones does not occur immediately, but is long-term.