“ ‘Skins’ is a show that addresses real-world issues confronting teens in a frank way,” she said in a statement. “We review all of our shows and work with all of our producers on an ongoing basis to ensure our shows comply with laws and community standards. We are confident that the episodes of ‘Skins’ will not only comply with all applicable legal requirements, but also with our responsibilities to our viewers.”

Child pornography is defined by the United States as any visual depiction of a minor engaged in sexually explicit conduct. In some cases, “a picture of a naked child may constitute illegal child pornography if it is sufficiently sexually suggestive,” according to the Justice Department’s legal guidance. Anyone younger than 18 is considered to be a minor.

The youngest cast member on “Skins” is 15.

“Skins” is an import from Britain, a country that has historically displayed a higher tolerance for TV eroticism than the United States. The episodes for MTV, including the third one, which was shared with TV critics, are virtually identical to the source material.

The remade episodes, like the ones in Britain, included simulated masturbation, implied sexual assault, and teenagers disrobing and getting into bed together.

With ads that feature groups of barely clothed teenagers, “Skins” is surely one of the most sexually charged programs that MTV has featured. Before it even had its premiere, the Parents Television Council, a TV watchdog group, labeled “Skins” the “most dangerous program that has ever been foisted on your children.” The group objected to the gratuitous scenes of drug and alcohol use, violence and sexual acts.

Of course, those scenes may be what attract young viewers in the first place. Jessica Bennett, a senior writer for Newsweek, wrote last week, “ ‘Skins’ may be the most realistic show on television.”