Paracrine action involves which of the following characteristics?
A) Action on a distant target cell
B) Autoregulation
C) Act locally on cells other than those that produce the hormone
D) Action on nearby target cells
Ans: C
Feedback:
When hormones act locally on cells other than those that produced the hormone, the action is called paracrine. Paracrine action is not synonymous with autoregulation, and action on the same cells that produced the hormone is autocrine action.
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