sacral canal การใช้

The sacral canal as a continuation of the vertebral canal runs throughout the greater part of the sacrum.
The sacral canal is a continuation of the spinal canal and runs throughout the greater part of the sacrum.
Behind this is the large triangular orifice of the sacral canal, which is completed by the lamina and spinous process of the first sacral vertebra.
This ligament is divisible in two parts : A short deep part which unites the two bones, and a larger superficial portion which completes the lower back part of the sacral canal.
Sometimes the uppermost transverse tubercles are not joined to the rest of the ala on one or both sides, or the sacral canal may be open throughout a considerable part of its length, in consequence of the imperfect development of the laminae and spinous processes.