In human anatomy, the anterior spinal artery is the blood vessel that supplies the anterior portion of the spinal cord. It arises from branches of vertebral arteries and is supplied by the anterior segmental medullary arteries, including the artery of Adamkiewicz, and courses along the anterior aspect of the spinal cord. Disruption of the anterior spinal cord leads to motor function loss and may lead to sensory loss. Human anatomy or anthropotomy is a special field within anatomy. ... The arterial system The blood vessels are part of the circulatory system and function to transport blood throughout the body. ... The spinal cord is a part of the vertebrate nervous system that is enclosed in and protected by the vertebral column (it passes through the spinal canal). ... The vertebral arteries are branches of the subclavian arteries. ... The artery of Adamkiewicz is an artery that arises from the abdominal aorta and supplies the lower two thirds of the spinal cord. ...
See also
Anterior spinal artery syndrome
External link
Yoshioka K, Niinuma H, Ohira A, Nasu K, Kawakami T, Sasaki M, Kawazoe K. MR angiography and CT angiography of the artery of Adamkiewicz: noninvasive preoperative assessment of thoracoabdominal aortic aneurysm. Radiographics. 2003 Sep-Oct;23(5):1215-25. PMID 12975511 Full Text
The artery may arise as a separate trunk from the arch of the aorta, and in such cases it may be either the first, second, third, or even the last branch derived from that vessel; in the majority, however, it is the first or last, rarely the second or third.
It anastomoses with the ascending pharyngeal and occipital arteries.
The ascending branch (ramus ascendens; superficial cervical artery) ascends beneath the anterior margin of the Trapezius, distributing branches to it, and to the neighboring muscles and lymph glands in the neck, and anastomosing with the superficial branch of the descending ramus of the occipital artery.
It arises from branches of the vertebral arteries and is supplied by the anterior segmental medullary arteries, including the artery of Adamkiewicz, and courses along the anterior aspect of the spinal cord.
The AnteriorSpinalArtery (ventral spinalartery) is a small branch, which arises near the termination of the vertebral, and, descending in front of the medulla oblongata, unites with its fellow of the opposite side at the level of the foramen magnum.
Disruption of the anteriorspinal cord leads to bilateral disruption of the corticospinal tract, causing motor deficits, and bilataeral disruption of the spinothalamic tract, causing sensory deficits in the form of pain/temperature sense loss.
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