Answer: 3 differences can be :
Explanation: nervous system
(1) MESSENGERS: Electrical impulses are the messengers in the nervous system.
(2) TRANSMISSION: Nerve impulses are transmitted through neurons.
(3) CONTROL: The nervous system is under both voluntary and involuntary control
Endocrine system
(1) MESSENGERS: Hormones are the chemical messengers in the endocrine system that target cells through the bloodstream.
(2) TRANSMISSION: hormones are transmitted through blood vessels.
(3) CONTROL: The endocrine system is under involuntary control.