The endocrine system and the nervous system are chemically related. Which of the following substances best illustrates this relationship?
Correct answer: C. Norepinephrine
- A. Estrogen
- B. Calcitonin
- C. Norepinephrine
- D. Calcium
Explanation
Norepinephrine is a chemical released from the sympathetic nervous system in response to stress. It is classified as a neurotransmitter, a chemical that is released from neurons. Because the release of norepinephrine affects other organs of the body, it is also referred to as a stress hormone. So, norepinephrine is a chemical regulator, released as a neurotransmitter by sympathetic nerve endings and is also secreted by the adrenal gland as a hormone.
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About Chemical Coordination and Hormones
Chemical coordination uses hormones released by endocrine glands and carried in blood to specific target cells. Coverage includes the pituitary, thyroid, pancreas, adrenal glands, ovaries and testes, feedback control, and the contrast between slower, longer-lasting hormonal responses and rapid nervous coordination.
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