And so in the structure of receptors there is no difference between male and female
There is no special!

I'm sorry, but you can enlighten how this happens: I chew as painfully any intramuscular injections, my mom voices with intravenous, my sister dreams in terrible dreams of depilation in the area of her lips, but she flips on any other, her daughter has the opposite. Grandfather lived and without anesthesia quietly lay on the operating table when his leg muscles were cut off and the open fracture was closed, but he goes to the dentist as a punishment even with modern anesthetics. Dad easily tolerates cuts, but from the melting type of a blueberry begins to give up.

Even if within a family everyone is very different, how can others be equal?