Everything about Vertebra Prominens totally explained
Vertebra prominens is the proper name for the seventh
cervical vertebra. The most distinctive characteristic of this vertebra is the existence of a long and prominent spinous process which is palpable from the skin surface, hence the name.
This spinous process is thick, nearly horizontal in direction, not bifurcated, but terminating in a tubercle to which the lower end of the
ligamentum nuchae is attached.
The transverse processes are of considerable size, their posterior roots are large and prominent, while the anterior are small and faintly marked;
the upper surface of each has usually a shallow sulcus for the eighth
spinal nerve, and its extremity seldom presents more than a trace of bifurcation.
The
foramen transversarium may be as large as that in the other cervical vertebrae, but is generally smaller on one or both sides;
occasionally it's double, sometimes it's absent.
On the left side it occasionally gives passage to the
vertebral artery;
more frequently the
vertebral vein traverses it on both sides;
but the usual arrangement is for both
artery and
vein to pass in front of the transverse process, and not through the foramen.
Sometimes the anterior root of the transverse process attains a large size and exists as a separate bone, which is known as a
cervical rib.
Additional images
Image:Gray_111_-_Vertebral_column-coloured.png|Vertebral column.
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