Rhomboid fossa
Rhomboid Fossa
The Rhomboid Fossa (pronunciation: /ˈrɒmbɔɪd ˈfɒsə/), also known as the floor of the Fourth ventricle, is a diamond-shaped depression located in the human brain.
Etymology
The term "Rhomboid Fossa" is derived from the Greek word "rhombos" meaning "rhombus" due to its diamond-like shape, and the Latin word "fossa" meaning "ditch" or "trench".
Anatomy
The Rhomboid Fossa is located in the dorsal aspect of the brainstem, specifically in the pons and medulla oblongata. It is part of the ventricular system of the brain, forming the floor of the Fourth ventricle. The Rhomboid Fossa contains various internal structures such as the facial colliculus, vestibular area, and sulcus limitans.
Function
The Rhomboid Fossa, as part of the Fourth ventricle, plays a crucial role in the circulation of cerebrospinal fluid (CSF) within the brain. It also houses several important cranial nerve nuclei.
Related Terms
- Fourth ventricle: The cavity in the brain filled with cerebrospinal fluid, of which the Rhomboid Fossa forms the floor.
- Brainstem: The posterior part of the brain, continuous with the spinal cord, containing the pons and medulla oblongata.
- Cerebrospinal fluid (CSF): The clear bodily fluid that fills the ventricular system of the brain and spinal cord.
- Cranial nerve: Any of the twelve paired nerves that arise directly from the brain, not from the spinal cord, and pass through separate apertures in the skull.
External links
- Medical encyclopedia article on Rhomboid fossa
- Wikipedia's article - Rhomboid fossa
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