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.
This fear, coupled with many other reasons, means that lots of people falsely believe: 1  HIV and AIDS are always associated with death. 2  HIV is associated with behaviours that some people disapprove of (such as homosexuality, drug use, sex work or infidelity) 3  HIV is only transmitted through sex, which is a taboo subject in some cultures.