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The cisterna magna (posterior cerebellomedullary cistern, [1] or cerebellomedullary cistern [2] [3]) is the largest of the subarachnoid cisterns.It occupies the space created by the angle between the caudal/inferior surface of the cerebellum, and the dorsal/posterior surface of the medulla oblongata (it is created by the arachnoidea that bridges this angle [3]).
The subarachnoid space is the space that normally exists between the arachnoid and the pia mater. It is filled with cerebrospinal fluid and continues down the spinal cord . Spaces are formed from openings at different points along the subarachnoid space; these are the subarachnoid cisterns , which are filled with cerebrospinal fluid.
The subarachnoid cisterns are spaces formed by openings in the subarachnoid space, an anatomic space in the meninges of the brain. [ 1] The space is situated between the two meninges, the arachnoid mater and the pia mater. These cisterns are filled with cerebrospinal fluid (CSF).
The space between the arachnoid and the underlying pia mater is called the subarachnoid space. The subarachnoid space contains cerebrospinal fluid, which can be sampled with a lumbar puncture, or "spinal tap" procedure. The delicate pia mater, the innermost protective layer, is tightly associated with the surface of the spinal cord.
Epidural space. In anatomy, the epidural space is the potential space between the dura mater and vertebrae ( spine ). [1] [2] The anatomy term "epidural space" has its origin in the Ancient Greek language; ἐπί, "on, upon" + dura mater also known as "epidural cavity", "extradural space" or "peridural space". In humans the epidural space ...
Tubular sheath of dura mater that surrounds the spinal cord and cauda equina. Thecal sac, dural sac. A section of the spinal cord with the dura opened to show the interior of the thecal sac. The spinal canal in cross-section; the outer layer of the thecal sac, the dura, is colored green and the subarachnoid space is blue. Anatomical terminology.
The fourth ventricle has a characteristic diamond shape in cross-sections of the human brain. It is located within the pons or in the upper part of the medulla oblongata. CSF entering the fourth ventricle through the cerebral aqueduct can exit to the subarachnoid space of the spinal cord through two lateral apertures and a single, midline ...
The interpeduncular cistern (or basal cistern [2]) is the subarachnoid cistern situated between the dorsum sellae (anteriorly) [3] : 440 and the two cerebral peduncles [2] [4] [3] : 440 of the mesencephalon (midbrain). [4] Its roof is represented by the floor of the third ventricle (i.e. posterior perforated substance, and the two mammillary ...