Pain fibers release glutamate and ____________ at postsynaptic terminals on spinothalamic neurons.

Question

Quizplus · Accepted Answer

Substance P is a neuropeptide that is released by pain fibers along with glutamate at postsynaptic terminals on spinothalamic neurons. This release activates the spinothalamic tract and is responsible for transmitting pain signals to the brain. GABA, dopamine, and beta-endorphin are neurotransmitters that are involved in pain regulation but are not released by pain fibers at postsynaptic terminals.

Pain Fibers Release Glutamate and ____________ at Postsynaptic Terminals on Spinothalamic