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Q. The chemical agent that initiates impulses in pain fibres is: (Solved)
1. ATP
2. substance P
3. Ca2+
4. H+
5. K+
b. substance P
Related Topics
→ Cardiovascular
→ Endocrine and Gastrointestinal Tract
→ General Physiology
→ GI-Digestion-Absorption-Metabolism
→ Metabolism and Endocrinology
→ Nerves and Muscles
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