Last Updated：2025/12/06
(anatomy) Either of two arteries of which one arises from a vertebral artery on each side below the level at which the corresponding branch of the anterior spinal artery arises and which descend on the posterior lateral surface of the spinal cord along a line passing close to the entrance of the dorsal roots to the spinal cord.
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posterior spinal artery
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Source Word
posterior spinal artery
Noun
(anatomy)
Either
of
two
arteries
of
which
one
arises
from
a
vertebral
artery
on
each
side
below
the
level
at
which
the
corresponding
branch
of
the
anterior
spinal
artery
arises
and
which
descend
on
the
posterior
lateral
surface
of
the
spinal
cord
along
a
line
passing
close
to
the
entrance
of
the
dorsal
roots
to
the
spinal
cord.
Japanese Meaning
後脊髄動脈：各側の椎骨動脈から分岐し、前脊髄動脈の枝が生じる部位より下から始まり、脊髄の背外側面、すなわち背根が脊髄に入る付近を通って下降する動脈。
Sense（1）
(anatomy)
Either
of
two
arteries
of
which
one
arises
from
a
vertebral
artery
on
each
side
below
the
level
at
which
the
corresponding
branch
of
the
anterior
spinal
artery
arises
and
which
descend
on
the
posterior
lateral
surface
of
the
spinal
cord
along
a
line
passing
close
to
the
entrance
of
the
dorsal
roots
to
the
spinal
cord.
（ plural ）
