External ear

External ear External and middle ear, opened from the front. Right side. Latin ' Gray's subject #229 1033 System {{{System}}} MeSH A09.246.272 The auricula. Lateral surface. The outer ear is the external portion of the ear. Pinna, or auricle The visible part is called the pinna and functions to collect and focus sound waves. Many mammals can move the pinna (with the auriculares muscles) in order to focus their hearing in a certain direction in much the same way that they can turn their eyes. Humans, unlike most other mammals, do not have this ability.... Ear canal, or external auditory meatus From the pinna the sound pressure waves move into the ear canal, a simple tube running to the middle ear. This tube amplifies frequencies in the range 3 kHz to 12 kHz. v·d·e Sensory system: Auditory and Vestibular systems (TA A15.3, Georgia 10.1029) Outer ear Pinna (Helix, Antihelix, Tragus, Antitragus, Incisura anterior auris, Earlobe) • Ear canal • Auricular muscles Eardrum (Umbo, Pars flaccida) Middle ear Tympanic cavity Labyrinthine wall/medial: Oval window · Round window • Secondary tympanic membrane • Prominence of facial canal • Promontory of tympanic cavity Membranous wall/lateral Mastoid wall/posterior: Mastoid cells • Aditus to mastoid antrum • Pyramidal eminence Carotid wall/anterior Tegmental wall/roof: Epitympanic recess Jugular wall/floor Ossicles Malleus (Neck of malleus, Superior ligament of malleus, Lateral ligament of malleus, Anterior ligament of malleus) · Incus (Superior ligament of incus, Posterior ligament of incus) · Stapes (Anular ligament of stapes) Muscles Stapedius · Tensor tympani Eustachian tube Bony part of pharyngotympanic tube · Cartilage of pharyngotympanic tube (Torus tubarius) Inner ear/ (membranous labyrinth, bony labyrinth) Auditory system Cochlear labyrinth General cochlea Scala vestibuli • Helicotrema • Scala tympani • Modiolus • Cochlear cupula Perilymphatic space Perilymph • Cochlear aqueduct Cochlear duct / scala media Reissner's/vestibular membrane • Basilar membrane Endolymph • Stria vascularis • Spiral ligament Organ of Corti: Stereocilia • Tectorial membrane • Sulcus spiralis (externus, internus) • Spiral limbus Vestibular system/ Vestibular labyrinth Static/translations/vestibule/endolymphatic duct: Utricle (Macula) · Saccule (Macula, Endolymphatic sac) · Kinocilium · Otolith • Vestibular aqueduct • Canalis reuniens Kinetic/rotations: Semicircular canals (Superior, Posterior, Horizontal) • Ampullary cupula • Ampullae (Crista ampullaris) {| class="navbox collapsible nowraplinks" style="margin:auto; " [. v]·[. d]·[. e] M: EAR anat (e/p)/phys/devp noco/cong, epon proc, drug (S2) |} Esta página utiliza contenido con licencia Creative Commons de Wikipedia (ver autores).

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