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    Biology
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    Human Physiology
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    Exam 7: Introduction to the Endocrine System
  5. Question
    A Signal Molecule That Is Secreted into the External Environment
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A Signal Molecule That Is Secreted into the External Environment

Question 54

Question 54

Short Answer

A signal molecule that is secreted into the external environment, instead of into the blood, is called a(n)________.

Correct Answer:

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ectohormon...

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