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.
C. THE ROLE OF BLOOD IN EXCRETION. The wastes of excretion leave body cells and are secreted into intercellular fluid. Wastes pass from intercellular fluid into the blood plasma by the process of diffusion. The blood plasma transports these excretions to excretory organs that remove them from the body.