Which statement is not correct?

a. Normally the effective plasma concentration of a hormone is regulated by appropriate adjustments in the rate of its secretion.
b. In order to maintain homeostasis, the rate of hormone secretion remains constant.
c. All hormones are regulated through negative feedback controls.
d. Neuroendocrine reflexes produce a sudden increase in hormone secretion in response to a specific, usually external, stimulus.
e. Some organs have endocrine and exocrine functions.


B

Anatomy & Physiology

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