Regarding the fundamental concepts of the endocrine system and hormones, which of the following statements are accurate?
a. The neural system provides a point-to-point rapid coordination that is long-lasting.
b. The neural system and the endocrine system jointly coordinate and regulate physiological functions.
c. Endocrine glands are also known as ductless glands.
d. The classical definition of a hormone is a chemical produced by endocrine glands, released into the blood, and transported to a distantly located target organ.
e. The current scientific definition describes hormones as non-nutrient chemicals that act as intercellular messengers and are produced in trace amounts.
f. Invertebrates possess a more complex endocrine system with more hormones than vertebrates.
g. Hormones secreted by organised endocrine glands are the only molecules covered by the new definition of hormones.
