Comparisons between the nervous system and endocrine system show that the

A) action of the endocrine system is more localized than the action of the nervous system
B) action of the endocrine system is of shorter duration than the action of the nervous system
C) primary action of the endocrine system is to regulate muscle contraction and glandular secretion
D) endocrine system acts through chemical messengers called hormones and the nervous system acts through messengers called neurotransmitters