Anatomy, Sexual Body Parts

Embryonic Sexual Development

Published:
Men are from Mars. Women are from Venus. Nope. All humans have been born on Earth so far.  Culturally, men and women may interact as aliens, but anatomically, they are strikingly similar.   Well, men are different than women, right? Between the sexes, there are more similarities than differences, so I’d go with...

Nerves, Big Overview

Published:
If you're wondering how I think about nerve systems, this diagram might help. Notice the orange highlights, which represent important nitric-oxide-producing nerve systems. Nitric oxide gas can be used (in a basic sense) for pleasure and nurturance, or inflammation and pain.    You see, the gas nitric oxide is important for sexual...

Clitoral Erections

Published:
Dear Dr. Myrtle, Do women really get erections? How can they--they don’t have a penis! Technically, it isn't a penis that becomes erect. The clitoral caverns inside of the penis are the structures that become engorged and erect. So when the clitoral caverns swell with blood flowing into the clitoris, it pushes on the penis, so that from the...

Disappearing Testicles

Published:
Dear Dr. Myrtle, I don’t know whether this is a problem, but I have noticed that when I self-pleasure or have sex, one or both of my testicles "disappear" up into my body. Is this a problem? When people become sexually aroused, a number of different muscles involuntarily contract, which regulates everything from blood supply to positioning...