The Endocrine System Has Certain Characteristics That Set It Apart

Multiple Choice

The endocrine system has certain characteristics that set it apart from the nervous system. Which one of the following characteristics is typical of the endocrine system, but NOT the nervous system?

A) The chemicals used for communication reach nearly every living cell except brain and reproductive tissues.
B) The agents of communication are always in the form of a chemical.
C) Hormones typically act on any cell they make contact with.
D) Hormones can interact with the neurons, but neurons cannot communicate with endocrine cells.
E) Hormones rely on cell receptors to transfer a message, but neurotransmitters do not require them.