Which of the following statements is true?
a. Hormones travel via specific pathways to specific cells, while electrical signals travel through the blood to all areas of the body.
b. Effects of hormones last for brief periods of time, while effects of electrical signals last for long periods of time.
c. Hormones have a direct connection with target cells, while electrical signals do not.
d. It takes longer for hormones to be released into the bloodstream and taken to target cells than it does for electrical signals to be transmitted.
