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The ear, including both the vestibular system and the auditory system, develops from the otic placode beginning the third week of development. During the fourth week, the otic placode invaginates into the mesenchyme adjacent to the rhombencephalon to form the otic pit, which then pinches off from the surface ectoderm to form the otic vesicle. [1]
The bony labyrinth (also osseous labyrinth or otic capsule) is the rigid, bony outer wall of the inner ear in the temporal bone. It consists of three parts: the vestibule, semicircular canals, and cochlea. These are cavities hollowed out of the substance of the bone, and lined by periosteum.
The ear canal is cleaned via earwax, which naturally migrates to the auricle. The ear develops from the first pharyngeal pouch and six small swellings that develop in the early embryo called otic placodes, which are derived from the ectoderm. The ear may be affected by disease, including infection and traumatic damage.
An otolith (Ancient Greek: ὠτο-, ōto-ear + λῐ́θος, líthos, a stone), also called otoconium, statolith, or statoconium, is a calcium carbonate structure in the saccule or utricle of the inner ear, specifically in the vestibular system of vertebrates. The saccule and utricle, in turn, together make the otolith organs.
Otic means pertaining to the ear. It can refer to: Otic ganglion, nerve cells in ear; Otic polyp, benign growth in middle ear; Otic capsule, another name for bony labyrinth; Otic drops, another name for ear drops; Otic notch, notch in skull of some species; Otic pit, developmental stage of ear; Otic placode, developmental stage of ear
right ear (from Latin auris dexter) AD: Alzheimer's disease acute distress aortic dissection right ear (from Latin auris dexter) as directed ADA: adenosine deaminase American Dental Association American Diabetes Association; e.g., "ADA diet" Americans with Disabilities Act. ADC: AIDS dementia complex: ADCC: antibody-dependent cell-mediated ...
The FGF, Bmp, Wnt and Pax genes are likely to be involved in otic induction. [5] FGF and BMP signals help control patterning in the early otic vesicle. Fgf3 and Fgf10 are suggested to play a role in otic induction in mice, as were Msx genes suggested to play a role in otic vesicle formation in chicks.
The entorhinal cortex is the part of the 'hippocampus system' that aids and stores visual and auditory memories. [23] [24] The supramarginal gyrus (SMG) aids in language comprehension and is responsible for compassionate responses. SMG links sounds to words with the angular gyrus and aids in word choice.