Mesoderm lining the coelom forms mesothelium. Separation of Peritoneal and Pleural Cavities: In the adult, peritoneal and pleural cavities are separated by the diaphragm. The diaphragm isformed by a septum transversum, paired pleuroperitoneal folds, and somatic mesoderm.
HIV Myth 3: 'I Donât Need to Worry â HIV/AIDS Only Infects Gay Men'. This couldn't be further from the truth. HIV is transmitted through an exchange of body fluids, specifically semen, vaginal fluids, breast milk, blood or pre-ejaculatory fluids. Most men become HIV-positive through sexual contact with other men.
Rumors, Myths and Hoaxes About HIV/AIDS. ...which may frighten the public, are being circulated on the Internet. Human immunodeficiency virus (HIV), the virus that causes AIDS, is spread by sexual contact (anal, vaginal, or oral) or by sharing needles and/or syringes with someone who is... Read more Â».