Cribriform plate

The Cribriform Plate is a significant anatomical structure in the human body, specifically located in the skull. It is a part of the ethmoid bone, which is situated at the roof of the nasal cavity and contributes to the separation of the brain from the nasal cavity.

Etymology

The term "Cribriform" is derived from the Latin word "cribrum" which means "sieve", and the suffix "-form" which means "shape". This is due to the sieve-like structure of the Cribriform Plate, which is perforated with numerous foramina for the passage of the olfactory nerve filaments from the nasal cavity to the olfactory bulb.

Anatomy

The Cribriform Plate is a thin, delicate bone that is a part of the ethmoid bone. It is located in the anterior cranial fossa, separating the brain from the nasal cavity. The plate is perforated with numerous tiny foramina for the passage of the olfactory nerve filaments. The Cribriform Plate is more substantial medially, and it becomes thinner laterally. The plate's lateral aspects are also more prone to fractures.

Clinical Significance

Due to its delicate nature, the Cribriform Plate is often susceptible to fractures, which can lead to cerebrospinal fluid leakage, a condition known as CSF Rhinorrhea. This condition can lead to a risk of meningitis. The Cribriform Plate is also a common site for the spread of malignant tumors from the nasal cavity to the brain.

Related Terms

• Ethmoid bone
• Olfactory bulb
• Nasal cavity
• Cerebrospinal fluid
• Meningitis

See Also

• Skull
• Anatomy
• Neuroanatomy

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  Cribriform plate Close-up view
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  Olfactory system
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  Keros types CT Coronal
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  Cribriform plate and Olfactory nerve - animation
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  Cribriform plate and Olfactory nerve - superior view
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  Base of skull
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  Ethmoid crista galli
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  Sobo 1909 69