Item #4 of 10

The _______________ transmit information that may indicate an injury has just occurred.

A-delta pain fibers;
C pain fibers;
free nerve endings within skin tissue;
midbrains;
none of the alternatives is correct;

INCORRECT - This is a nonsense word. There is only one midbrain per brain. In addition, this singular region supplies the descending neural pathway that acts to inhibit pain transmission.

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