gray column (redirected from Grey column)

gray column

n.

Any of the three masses of gray matter that extend longitudinally through the center of each lateral half of the spinal cord and appear as gray horns in transverse sections.

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gray column,

any of the three longitudinally oriented thickenings in the spinal cord, composed of the gray substance 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.

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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).

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column

an anatomical part in the form of a pillar-like structure; anything resembling a pillar.

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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.