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]

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 ?
As he was holding the exhibit, I noticed that he was moving it ever so gently and slowly, trying to get the air bubble to move to the representation of the anterior spinal artery. But no matter how hard he tried, he couldn't do this.
The major differential diagnoses were spinal cord infarction secondary to acute anterior spinal artery thrombosis or transverse myelitis.
A single anterior spinal artery arises from branches off both vertebral arteries to supply the anterior two-thirds of the spinal cord.
The typical patient at risk of anterior spinal artery syndrome is an elderly patient with a past history of arteriosclerosis or recent period of hypotension, who presents with a sudden onset of flaccid paralysis, abolished segmental reflexes and minor or patchy sensory disturbance.
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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