Which neurotransmitters are released from A-delta and C fibers?

The release of neurotransmitters from A-delta and C fibers is primarily associated with pain transmission and processing. A-delta fibers are responsible for transmitting fast, sharp pain sensations, while C fibers are involved in transmitting slower, dull, and throbbing pain sensations.

In this context, Substance P and Glutamate serve essential roles in the pain signaling pathways. Substance P is a neuropeptide that is released in response to painful stimuli and is known to modulate pain perception in the central nervous system. Glutamate, on the other hand, is an excitatory neurotransmitter that contributes to synaptic transmission and is involved in the fast pain pathways. Together, these neurotransmitters enhance the propagation of pain signals and contribute to the sensation of pain that the body experiences.

This combination of neurotransmitters helps explain why the correct choice highlights both Substance P and Glutamate as key players in the behavior of A-delta and C fibers in the context of pain transmission. Other options do not accurately reflect the specific roles and functions of neurotransmitters associated with these fibers.