Intervertebral foramina - Foramina intervertebralia
Intervertebral foramina of the sacrum are lateral openings in the sacral canal for the passage of the sacral spinal nerves, developped from the original superior and inferior notches of sacral vertebrae. They end in anterior and posterior sacral foramina.
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).
General Anatomy > Bones; Skeletal system > Axial skeleton > Vertebral column > Sacrum [sacral vertebrae I - V] > Base of sacrum > Pelvic surface > Intervertebral foramina