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 One. Myth: AIDS is mostly an African problem. Fact: Of the 42 million people around the world who live with HIV/AIDS, 70% are in sub-Saharan Africa. HIV/AIDS exists and is spreading in Africa in a socioeconomic context created by western colonialism and, more recently, western trade and economic policies.
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».