A Nervous System Can Alter Activities in Its Target Cells

Multiple Choice

A nervous system can alter activities in its target cells in muscles and glands because

A) they are electrically coupled by gap junctions.
B) the target cells have receptor proteins for the signals released by the nervous system.
C) the nervous system releases signals into the blood to control the target cells.
D) the target cells that become disconnected from the nervous system rapidly die.
E) the target cells each have an internal neural network connected to the nervous system.