anterior spinal artery


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an·te·ri·or spi·nal ar·ter·y

[TA]
origin, intracranial part of vertebral artery; distribution, anteromedial spinal cord and adjacent pia mater; anastomoses, anterior segmental medullary arteries of spinal branches of vertebral, intercostal and lumbar arteries.
Synonym(s): arteria spinalis anterior [TA]

anterior spinal artery

an artery that originates within the cranial cavity and passes inferiorly along the surface of the spinal cord. It is reinforced along its length by 8 to 10 segmental medullary arteries, the largest of which is the artery of Adamkiewicz.

an·te·ri·or spi·nal ar·te·ry

(an-tēr'ē-ŏr spī'năl ahr'tĕr-ē) [TA]
Origin, intracranial part of vertebral artery; distribution, anteromedial spinal cord and adjacent pia mater; anastomoses, spinal branches of intercostal and lumbar arteries.
Synonym(s): arteria spinalis anterior.

anterior spinal artery

The left and right anterior spinal arteries are initially branches from the vertebral arteries, but as they descend to the hindbrain-spinal cord junction, they merge into a single midline artery that runs along the ventral surface of the spinal cord (in the anterior median sulcus). At each intervertebral foramen, radicular arteries join the anterior spinal artery, which supplies blood to the ventral half of the spinal cord.
See also: artery
References in periodicals archive ?
Paraplegia after spinal anaesthesia has been reported secondary to pressure from haematoma or abscess formation (2), as well as the anterior spinal artery syndrome (3).
A single anterior spinal artery arises from branches off both vertebral arteries to supply the anterior two-thirds of the spinal cord.
Anterior spinal cord syndrome comprises ischemia or infarction of the spinal cord in the distribution of the anterior spinal artery, which supplies the ventral two-thirds of the spinal cord.
In this regard, we think that the vasculitis of the anterior spinal artery or its branches due to BD is the most likely abnormality that caused the thoracic cord lesion in our patient.

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