gray column
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column
[kol´um]an anatomical part or other structure that resembles a pillar.
anal c's vertical folds of mucous membrane at the upper half of the anal canal; called also rectal columns.
anterior column the anterior portion of the gray substance of the spinal cord, in transverse section seen as a horn.
gray column the longitudinally oriented parts of the spinal cord in which the nerve cell bodies are found, comprising the gray matter of the spinal cord.
lateral column the lateral portion of the gray substance of the spinal cord, in transverse section seen as a horn; present only in the thoracic and upper lumbar regions.
posterior column the posterior portion of the gray substance of the spinal cord, in transverse section seen as a horn.
rectal c's anal columns.
spinal column (vertebral column) spine (def. 2).
gray column
any of the three longitudinally oriented thickenings in the spinal cord, composed of gray nervous tissue and containing the nerve cell bodies. They are commonly referred to as horns because in transverse sections of the spinal cord they have the appearance of horns. See also anterior horn, lateral horn, posterior horn.
gray column
Gray matter in the anterior and posterior horns of the spinal cord.
See also: column
column
an anatomical part in the form of a pillar-like structure; anything resembling a pillar.
anal c's
longitudinal folds of mucous membrane at the cranial half of the anal canal; called also rectal columns.
column of Bertin
extensions of renal cortex between the renal pyramids.
column chromatography
see chromatography.
dorsal column
the dorsal portion of the gray substance of the spinal cord, in transverse section seen as a horn.
gray column
the longitudinally oriented parts of the spinal cord in which the nerve cell bodies are found, comprising the gray matter of the spinal cord.
lateral column
the lateral portion of the gray substance of the spinal cord, in transverse section seen as a horn; present only in the thoracic and anterior lumbar regions.
rectal c's
anal columns.
spinal column
the rigid structure in the midline of the back, composed of the vertebrae. Called also vertebral column. See also spine.
ventral column
the ventral portion of the gray substance of the spinal cord, in transverse section seen as a horn.