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: Early signs and symptoms. HIV is a virus that attacks a person's immune system. It can weaken the immune system to the point where a person's body struggles to fight infections and disease. If left untreated, HIV can lead to the disease AIDS. AIDS stands for acquired immunodeficiency syndrome. AIDS is the final stage of HIV infection.