Ear
Categorical breakdown of terms falling inder the category of Ear. Sub categories will become more specific in nature to the terms listed for Ear.
Sub-Categories
Terms
Acoustic Maculae - The sensory areas on the vertical wall of the saccule and in the floor of the utricle. The hair cell...
Basilar Membrane - A basement membrane in the cochlea that supports the hair cells of the ORGAN OF CORTI, consisting ke...
Cochlea - The part of the inner ear (LABYRINTH) that is concerned with hearing. It forms the anterior part of ...
Cochlear Aqueduct - A fine channel that passes through the TEMPORAL BONE near the SCALA TYMPANI (the basilar turn of the...
Cochlear Duct - A spiral tube that is firmly suspended in the bony shell-shaped part of the cochlea. This ENDOLYMPH-...
Ear - The hearing and equilibrium system of the body. It consists of three parts: the EXTERNAL EAR, the MI...
Ear Auricle - The shell-like structure projects like a little wing (pinna) from the side of the head. Ear auricles...
Ear Canal - The narrow passage way that conducts the sound collected by the EAR AURICLE to the TYMPANIC MEMBRANE...
Ear Cartilage - Cartilage of the EAR AURICLE and the EXTERNAL EAR CANAL....
Ear Ossicles - A mobile chain of three small bones (INCUS; MALLEUS; STAPES) in the TYMPANIC CAVITY between the TYMP...
Ear, External - The outer part of the hearing system of the body. It includes the shell-like EAR AURICLE which colle...
Ear, Inner - The essential part of the hearing organ consists of two labyrinthine compartments: the bony labyrint...
Ear, Middle - The space and structures directly internal to the TYMPANIC MEMBRANE and external to the inner ear (L...
Endolymphatic Duct - The part of the membranous labyrinth that traverses the bony vestibular aqueduct and emerges through...
Endolymphatic Sac - The blind pouch at the end of the endolymphatic duct. It is a storage reservoir for excess ENDOLYMPH...
Eustachian Tube - A narrow passageway that connects the upper part of the throat to the TYMPANIC CAVITY....
Glomus Tympanicum - A highly vascular ovoid body of chemoreceptive tissue lying adjacent to the TYMPANIC CAVITY. It is d...
Hair Cells, Ampulla - Sensory cells in the ampullary crest of each of the semicircular ducts, with their apical stereocili...
Hair Cells, Auditory - Sensory cells in the organ of Corti, characterized by their apical stereocilia (hair-like projection...
Hair Cells, Auditory, Inner - Auditory sensory cells of organ of Corti, usually placed in one row medially to the core of spongy b...
Hair Cells, Auditory, Outer - Sensory cells of organ of Corti. In mammals, they are usually arranged in three or four rows, and aw...
Hair Cells, Vestibular - Sensory cells in the acoustic maculae with their apical stereocilia embedded in a gelatinous OTOLITH...
Incus - One of three ossicles of the middle ear. It conducts sound vibrations from the MALLEUS to the STAPES...
Labyrinth Supporting Cells - Cells forming a framework supporting the sensory AUDITORY HAIR CELLS in the organ of Corti. Lateral ...
Malleus - The largest of the auditory ossicles, and the one attached to the membrana tympani (TYMPANIC MEMBRAN...
Organ of Corti - The spiral EPITHELIUM containing sensory AUDITORY HAIR CELLS and supporting cells in the cochlea. Or...
Otolithic Membrane - A gelatinous membrane overlying the acoustic maculae of SACCULE AND UTRICLE. It contains minute crys...
Oval Window, Ear - Fenestra or oval opening on the lateral wall of the vestibular labyrinth adjacent to the MIDDLE EAR....
Round Window, Ear - Fenestra of the cochlea, an opening in the basal wall between the MIDDLE EAR and the INNER EAR, lead...
Saccule and Utricle - Two membranous sacs within the vestibular labyrinth of the INNER EAR. The saccule communicates with ...
Scala Tympani - The lower chamber of the COCHLEA, extending from the round window to the helicotrema (the opening at...
Scala Vestibuli - The upper chamber of the COCHLEA that is filled with PERILYMPH. It is connected to SCALA TYMPANI via...
Semicircular Canals - Three long canals (anterior, posterior, and lateral) of the bony labyrinth. They are set at right an...
Semicircular Ducts - The three membranous semicircular ducts within the bony semicircular canals. They open into the UTRI...
Spiral Ganglion - The sensory ganglion of the COCHLEAR NERVE. The cells of the spiral ganglion send fibers peripherall...
Spiral Lamina - The bony plate which extends outwards from the modiolus into the spiral canal of the cochlea, formin...
Spiral Ligament of Cochlea - A spiral thickening of the fibrous lining of the cochlear wall. Spiral ligament secures the membrano...
Stapedius - A tiny muscle that arises from the posterior wall of the TYMPANIC CAVITY of MIDDLE EAR with its tend...
Stapes - One of the three ossicles of the middle ear. It transmits sound vibrations from the INCUS to the int...
Stria Vascularis - A layer of stratified EPITHELIUM forming the endolymphatic border of the cochlear duct at the latera...
Tectorial Membrane - A membrane, attached to the bony SPIRAL LAMINA, overlying and coupling with the hair cells of the OR...
Tensor Tympani - A short muscle that arises from the pharyngotympanic tube (EUSTACHIAN TUBE) and inserts into the han...
Tympanic Membrane - An oval semitransparent membrane separating the external EAR CANAL from the tympanic cavity (EAR, MI...
Vestibular Aqueduct - A small bony canal linking the vestibule of the inner ear to the posterior part of the internal surf...
Vestibule, Labyrinth - An oval, bony chamber of the inner ear, part of the bony labyrinth. It is continuous with bony COCHL...
Common Chronic Illnesses
Coronary Disease
An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.
Diabetes Mellitus, Type 1
A subtype of DIABETES MELLITUS that is characterized by INSULIN deficiency. It is manifested by the sudden onset of severe HYPERGLYCEMIA, rapid progression to DIABETIC KETOACIDOSIS, and DEATH unless treated with insulin. The disease may occur at any age, but is most common in childhood or adolescence.
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Diabetes Mellitus, Type 2
A subclass of DIABETES MELLITUS that is not INSULIN-responsive or dependent (NIDDM). It is characterized initially by INSULIN RESISTANCE and HYPERINSULINEMIA; and eventually by GLUCOSE INTOLERANCE; HYPERGLYCEMIA; and overt diabetes. Type II diabetes mellitus is no longer considered a disease exclusively found in adults. Patients seldom develop KETOSIS but often exhibit OBESITY.
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Hypertension
Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more.
Mesothelioma
A tumor derived from mesothelial tissue (peritoneum, pleura, pericardium). It appears as broad sheets of cells, with some regions containing spindle-shaped, sarcoma-like cells and other regions showing adenomatous patterns. Pleural mesotheliomas have been linked to exposure to asbestos. (Dorland, 27th ed)
Osteoarthritis
A progressive, degenerative joint disease, the most common form of arthritis, especially in older persons. The disease is thought to result not from the aging process but from biochemical changes and biomechanical stresses affecting articular cartilage. In the foreign literature it is often called osteoarthrosis deformans.
