Cisterna is a term used to describe a large, fluid-filled cavity or space within the body. In this context, it specifically refers to the enlarged areas within the subarachnoid space.
Subarachnoid indicates the location, which is beneath the arachnoid mater and above the pia mater.
Therefore, cisterna subarachnoidalis refers to the large fluid-filled spaces within the subarachnoid space, which are located between the arachnoid mater and pia mater.
Key Points:
* The subarachnoid space is filled with cerebrospinal fluid (CSF).
* Cisternae are enlargements of the subarachnoid space, allowing for the accumulation of CSF.
* These cisterns are important for the flow and circulation of CSF, which helps protect and nourish the brain and spinal cord.
Examples of cisterns in the subarachnoid space:
* Cisterna magna: Located at the base of the brain, between the cerebellum and medulla oblongata.
* Cisterna pontis: Located in front of the pons.
* Cisterna interpeduncularis: Located between the cerebral peduncles.
* Cisterna superior: Located above the corpus callosum.
Understanding the cisterna subarachnoidalis is crucial in various medical fields, including neurology, neurosurgery, and radiology. It plays a significant role in the diagnosis and treatment of conditions affecting the brain and spinal cord, such as hydrocephalus, meningitis, and spinal cord injuries.