While teaching a science class, the instructor mentions that both autocrine and paracrine hormonal actions occur without entering the blood stream. The instructor then asks the students, "What cells do paracrine actions affect?"
The student with the correct answer is:
A) Self
B) Local
C) Stored
D) Target
Ans: B
Feedback:
Paracrine actions are hormonal interactions with local cells other than those that produce the hormone; autocrine actions are with self-cells (cells from which they were produced). Both autocrine and paracrine hormonal actions affect target cells. Neither paracrine nor autocrine actions affect cell storage.
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