A Nervous System Can Alter Activities in Its Target Cells

question 9

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.