See Also: erythema arthriticum epidemicum(medicine)
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internal medicine(encyclopedia)
internal medicine(dictionary)
Internal Medicine(health)
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Annals of Internal Medicine(health)
tuberculum arthriticum(medicine)
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erythema arthriticum epidemicum (medicine) and Ear, internal (health)


erythema arthriticum epidemicum (medicine)


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Haverhill fever
<microbiology> An infection by Streptobacillus moniliformis marked by initial chills and high fever (gradually subsiding), by arthritis usually in the larger joints and spine, and by a rash occurring chiefly over the joints and on the extensor surfaces of the extremities.

Haverhill fever is used to indicate Streptobacillus moniliformis infections not associated with rat bite resulting from contaminated Food or water.

Synonym: erythema arthriticum epidemicum.

Origin: Haverhill, MA, where an epidemic occurred in 1926


Ear, internal (health)


There are three sections of the ear. They are the external ear, the middle ear, and the internal ear. The internal ear is far and away the most highly complex. The essential component of the internal ear for hearing is the membranous labyrinth where the fibers of the auditory nerve (the nerve connecting the ear to the brain) end. The membranous labyrinth is a system of communicating sacs and ducts (tubes) filled with fluid (the endolymph). The membranous labyrinth is lodged within a cavity called the bony labyrinth. At some points the membranous labyrinth is attached to the bony labyrinth and at Other points the membranous labyrinth is suspended in a fluid (the perilymph) within the bony labyrinth. The bony labyrinth has three parts: a central cavity (the vestibule), semicircular canals (which open into the vestibule) and the cochlea (a snail-shaped spiral tube). The membranous labyrinth also has a vestibule which consists of two sacs (called the utriculus and sacculus) connected by a narrow tube. The utriculus, the larger of the two sacs, is the principal organ of the vestibular system (which informs us about the position and movement of the head). The smaller of the two sacs, the sacculus (literally, the little sac) is connected with a membranous tube in the cochlea containing the organ of Corti. It is in the organ of Corti that are situated the hair cells, the special sensory receptors for hearing. The internal ear is also called the inner ear.