PIARACHNOID Meaning and
Definition
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Piarachnoid is an adjective that refers to any anatomical structure, tissue, or condition associated with the pia mater and the arachnoid mater, the two innermost layers of the meninges, which are the protective membranes surrounding the brain and spinal cord.
The pia mater is the delicate innermost layer of the meninges that closely adheres to the surface of the brain and spinal cord. It is responsible for providing nourishment and protection to the underlying neural tissue. The arachnoid mater is the middle layer of the meninges and is located directly below the dura mater. It is composed of a web-like network of connective tissue that extends between the pia mater and the dura mater. Together, the pia mater and arachnoid mater form the subarachnoid space, which is filled with cerebrospinal fluid.
The term "piarachnoid" describes any structures or processes that relate to or occur within this subarachnoid space or involve the pia mater and arachnoid mater. For example, a piarachnoid hemorrhage refers to bleeding that occurs between the pia mater and the arachnoid mater, typically due to rupture of a cerebral blood vessel. Another example could be a piarachnoid cyst, which is a fluid-filled sac that develops in the subarachnoid space.
Overall, piarachnoid is a term used in medical contexts to describe anything pertaining to the pia mater, the arachnoid mater, or the subarachnoid space.
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The pia mater and arachnoid considered as one membrane, meningina.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for PIARACHNOID
- oiarachnoid
- liarachnoid
- -iarachnoid
- 0iarachnoid
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- pizrachnoid
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- piaeachnoid
- piadachnoid
- piafachnoid
- piatachnoid
- pia5achnoid
- pia4achnoid
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