Pertaining to a cistern, especially the cisterna cerebellomedullaris.
- c. puncture — puncture of the cisterna cerebellomedullaris (magna) with a hollow needle inserted through the aperture between the occipital crest and the anterior edge of the atlas. A sample of CSF may be collected, contrast medium injected or pressure measured. See also spinal puncture.

Cisternal puncture. By permission from Morgan RV, Bright R, Swartout M, Handbook of Small Animal Practice, Saunders, 2002 - c. space — a channel between opposing layers of a highly convoluted single membrane in the endoplasmic reticulum of all cells.
- c. tap — see cisternal puncture (above).




