A chemical signal that has both endocrine and neural roles is:
Correct answer: A. Epinephrine
- A. Epinephrine
- B. Cortisol
- C. Melatonin
- D. Calcitonin
Explanation
The hormones epinephrine and norepinephrine are secreted from the adrenal medulla. They are emergency hormones released in condition of stress, emergency etc. Epinephrine and norepinephrine are also released by the adrenergic nerve fibres of the sympathetic nervous system where they act as neurotransmitters.
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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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