Assertion: sacrum's opening | /r/HasProperty | sacral foramina
Facets:
Source sentences:
text: Between the fused transverse processes of the lower sacral vertebrae, on each side, are a series of four openings (sacral foramina); the sacral nerves and blood vessels pass through these openings.
text: The sacrum has an opening, the sacral canal, through which travels the sacral plexus (nerves).
text: …transverse processes of the lower sacral vertebrae, on each side, are a series of four openings (sacral foramina); the sacral nerves and blood vessels pass through these openings.