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The ______ system works with the circulatory system to maintain the correct water balance in cells.

endocrine

reproductive

nervous

excretory
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QUESTION 6

Hormone production during childbirth is an example of ______ feedback.

neutral

positive

negative

none of the above
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QUESTION 7

Feedback can be either positive or _________.

negative

neutral

both a and b

none of the above
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QUESTION 8

The ______ system receives stimuli and transmits a message to the spinal cord or brain.

excretory

endocrine

nervous

none of the above
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QUESTION 9

______ controls are controlled from outside the body.

extrinsic

intrinsic

both a and b

none of the above
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QUESTION 10

When muscles use more oxygen, and produce more carbon dioxide, ______ controls cause blood vessels to open wider.

intrinsic

extrinsic

both a and b

none of the above

User David Beck
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2 Answers

4 votes
Negative ................
User Nadi
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4 votes
Hormone production is an example of positive feedback
User Martin Horton
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8.2k points
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