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.
HIV and AIDS. 1  AIDS is an immune deficiency condition caused by infection with the Human Immunodeficiency Virus (HIV) 2  Epidemiology HIV can occur in any population. increased prevalence in hemophiliacs, IV drug abusers, and homosexual men. 3  Pathophysiology the CD4 cells (T-helper cells) are affected.