Endorphin release causes -

Ans. is 'a' i.e., Analgesia o Primary action of endorphin (b-endorphin) is to inhibit pain.o Neurons containing b--endorphin descend from the hypothalamus to terminate on periaquenductal gray matter of midbrain. Periaqueductal gray matter send enkephalinergic and dynorphinergic neuron to medulla to inhibit pain by stimulating raphe nucleus.