Symptoms usually appear from three days to a few weeks after the bite from an infected tsetse fly and may include: painful chancre (small ulcer) at the site of the infected tsetse fly bite; high fever; severe headache and muscle aches; rash; In rare cases, enlargement of the spleen, kidney problems, or heart problems can develop.
In medicine and anatomy, the special senses are the senses that have specialized organs devoted to them: vision (the eye) hearing and balance (the ear, which includes the auditory system and vestibular system) smell (the nose) taste (the tongue) The distinction between special and general senses is used to classify nerve fibers running to and from ...
The balance system works with the visual and skeletal systems to maintain orientation. Visual signals are sent to the brain and compared to information from the vestibular systems and muscles and joints. An organ in the inner ear, the labyrinth, is a central player in the vestibular or balance system. Inside the labyrinth are three semicircular canals which are filled with fluid. As the head moves, the fluid inside the semicircular canals signals to the brain its relative motion.