cisterna magna


cisterna

 [sis-ter´nah] (pl. cister´nae) (L.) cistern.cisterna cerebellomedulla´ris poste´rior the enlarged subarachnoid space between the undersurface of the cerebellum and the posterior surface of the medulla oblongata; called also cisterna magna.cisterna chy´li the dilated portion of the thoracic duct at its origin in the lumbar region; called also receptaculum chyli.cisterna mag´na c. cerebellomedullaris posterior.

cisterna magna

The cranial subarachnoid space between the medulla and the cerebellum; the foramina of the fourth ventricle open into it. Cerebrospinal fluid flows from it into the spinal subarachnoid space. See also: cisterna