A 'zygapophysis' is a
process which sticks out of an end of a
vertebra to lock with a zygapophysis on the next vertebra, to make the
backbone more stable.
Each typical vertebra has 4 of them: two front (prezygapophysis) and two back (postzygapophysis), two left and two right. Its plural is "zygapophyses".
Its origin is
Greek ζυγον = "
yoke" (because it links two vertebrae) + απο = "away" + φυσις = "
process".
See also
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Zygapophysial joint
External links
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