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Threshold water supply system aperture outside

Threshold water supply system aperture outside [apertura externa aqueductus vestibuli – PNA (The anatomic nomenclature Parisian), BNA (The anatomic nomenclature Basel); apertura interna canaliculi vestibuli – JNA (The anatomic nomenclature Yenskaya)] – the opening which is located on a back surface of a pyramid of a temporal bone lateralny and is lower than an opening of internal acoustical pass. Through a threshold water supply system aperture outside there passes the endolymphatic channel of a webby labyrinth.

 
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Blood of the person "runs" on vessels under huge pressure and at disturbance of their integrity is capable to shoot of distance to 10 meters.