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PSA Engines
PSA, PsA, Psa, or psa may refer to: Biology and medicine * Posterior spinal artery * Primary systemic amyloidosis, a disease caused by the accumulation of abnormal proteins * Prostate-specific antigen, an enzyme used as a blood tracer for prostate cancer * Psoriatic arthritis, an inflammatory disease * ''Pseudomonas aeruginosa'', a species of bacterium * Pseudomonas syringae pv. actinidiae, ''Pseudomonas syringae'' pv. ''actinidiae'', a pathovar of a bacterium that attacks kiwifruit Chemistry * Polar surface area, the surface sum over all polar atoms of a molecule * Pressure swing adsorption, a technology for separating, or purifying, gases Computing * Professional services automation, software for automating project and billing management for professional service firms * PSA Certified, Platform Security Architecture, a security certification for the Internet of Things * Plesk Server Administrator, a commercial web hosting automation program * Persistent staging area, a st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Posterior Spinal Artery
The posterior spinal artery (dorsal spinal arteries) arises from the vertebral artery in 25% of humans or the posterior inferior cerebellar artery in 75% of humans, adjacent to the medulla oblongata. It is usually double, and spans the length of the spinal cord. It supplies the grey and white posterior columns of the spinal cord. Structure The posterior spinal artery arises above the foramen magnum. It passes posteriorly to descend the medulla passing through and behind of the posterior roots of the spinal nerves. Along its course it is reinforced by a succession of segmental or radiculopial branches, which enter the vertebral canal through the intervertebral foramina, forming a plexus called the vasocorona with the anterior vertebral arteries. Below the medulla spinalis and upper cervical spine, the posterior spinal arteries are rather discontinuous; unlike the anterior spinal artery, which can be traced as a distinct channel throughout its course, the posterior spinal arteries ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |