Adnan is beginning to make love with his partner. according to masters and johnson, what will be the first sign that adnan is in the excitement phase?

The sign for Adam's excitement would be the erection of the penis. At the point when men turn out to be sexually stimulated,  muscles, hormones, veins, and nerves all work with each other to make an erection. Nerve signals, sent from the cerebrum to the penis, fortify muscles to unwind. This, thus, enables blood to stream to the tissue in the penis.

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