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.
Myth: If Iâm diagnosed with HIV, my life is over. Fact: Having HIV does not automatically mean you have AIDS. Many years may pass before people with the virus feel ill or develop the disease. Many people now live long and active lives with HIV because of medical advancements.
The Origin of AIDS and HIV May Not Be What You Have Learned . Most people believe that the origin of HIV, the AIDS virus, derives from some natural evolutionary event. Key among these HIV origin theories is the so called âcut hunter theoryâ in which a human, allegedly African native, received a bloody wound or infected splash while preparing a chimpanzee carrying a similar virus (i.e., SIVcpz).