Syphilis of joints may occur in most stages of congenital and acquired syphilis. Diagnosis is materially assisted by concomitant signs or symptoms of syphilis and blood serological and cerebrospinal fluid tests. The latter are invariably positive in the early stages but are not so reliable in late syphilitic lesions, being positive in only about 50 percent of these cases.
The rectum. Solid waste is stored in the large intestine/anus, and liquid waste is stored in the bladder. The rectum. Solid waste is stored in the large intestine/anus, and liquid waste is stored in the bladder.
Wastes, such as urea and creatinine, must also be removed from the body. Urea and other wastes are made when the body breaks down protein, such as meat. Creatinine is a waste product of the muscles. As kidney function decreases, the levels of urea and creatinine in the blood increase. Many waste products are toxic (poisonous) if they are not removed from the body fluids. For example, when certain drugs are taken, chemical wastes are produced which must be removed from the body by the kidneys.