PETROUS SINUS Meaning and
Definition
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The petrous sinus is a term used in anatomy to refer to a small venous channel located within the petrous part of the temporal bone. It is also known as the petrosal sinus or the inferior petrosal sinus. The term "petrous" derives from the Latin word "petrosus," meaning stony or rock-like, as the petrous part of the temporal bone is one of the densest and hardest bones in the human body.
The petrous sinus serves as a major pathway for the drainage of venous blood from several structures within the skull. It begins at the junction of the cavernous sinus and the superior petrosal sinus, and drains into the internal jugular vein within the neck. Along its course, the petrous sinus receives blood from the inferior cerebral veins, the basilar plexus, and the veins of the internal ear.
The importance of the petrous sinus lies in its proximity to vital structures within the skull, including the internal carotid artery and several cranial nerves. It is critical that medical professionals maintain a detailed understanding of the anatomical relationships in this area to prevent complications during surgical procedures or interventions involving the petrous sinus.
Overall, the petrous sinus is a crucial component of the venous drainage system within the skull, aiding in the removal of deoxygenated blood from various structures.
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A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for PETROUS SINUS
- oetrous sinus
- letrous sinus
- -etrous sinus
- 0etrous sinus
- pwtrous sinus
- pstrous sinus
- pdtrous sinus
- prtrous sinus
- p4trous sinus
- p3trous sinus
- perrous sinus
- pefrous sinus
- pegrous sinus
- peyrous sinus
- pe6rous sinus
- pe5rous sinus
- peteous sinus
- petdous sinus
- petfous sinus
- pettous sinus
Etymology of PETROUS SINUS
The word "petrous sinus" is a medical term that consists of two components: "petrous" and "sinus".
1. Petrous: The term "petrous" originates from the Latin word "petrosus", which means "rock-like" or "hard". It is derived from the Latin noun "petra", meaning "rock" or "stone". "Petrous" is often used in anatomy to describe structures that are dense, hard, or resemble rock, such as the petrous part of the temporal bone.
2. Sinus: The term "sinus" also has Latin origins. It comes from the Latin word "sinus", which means "bend", "curve", or "fold". In anatomy, "sinus" is commonly used to refer to a cavity, hollow space, or a canal.
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