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Pacinian

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Pa`cin´i`an
a.1.(Anat.) Of, pertaining to, or discovered by, Filippo Pacini (1812-1883), an Italian physician of the 19th century.
Pacinian corpuscles
small oval bodies terminating some of the minute branches of the sensory nerves in the skin of the fingers, mesentery, integument and other parts of the body; the corpuscula lamellosa; called also Vater's corpuscles and Vater-Pacini corpuscles. They are sensitive to pressure, and supposed to be tactile organs.


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Specialized sensors called Pacinian fibers, the tips of nerve fibers, detect only a select few of the vibrations--those right around 250 hertz--before sending the signal to the brain.
However, some of the nerve endings, called Pacinian corpuscles, are relatively deep - about 2 millimetres - under the skin, raising questions about how they could detect such subtle vibrations.
Mechanoreceptors such as Meissner's corpuscles, Pacinian corpuscles, Merkel's disks, and Ruffini endings are responsible for the detection of tactile input.
 
 
 
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