Cribriform fascia

Cribriform fascia is a thin layer of connective tissue that covers the olfactory bulb and olfactory tract. It is part of the meninges, the protective layers of the brain and spinal cord. The cribriform fascia is named for its sieve-like appearance, with the term "cribriform" derived from the Latin "cribrum," meaning sieve, and the suffix "-form," meaning shape or resemblance.

Anatomy[edit | edit source]

The cribriform fascia is located in the anterior cranial fossa, a depression in the floor of the cranial cavity. It covers the olfactory bulb and olfactory tract, which are responsible for the sense of smell. The fascia is pierced by olfactory nerve fibers, which give it a sieve-like appearance.

Function[edit | edit source]

The primary function of the cribriform fascia is to protect the olfactory bulb and tract. It also serves as a barrier to prevent the spread of infections from the nasal cavity to the brain.

Clinical significance[edit | edit source]

Damage to the cribriform fascia can result in a loss of smell, a condition known as anosmia. This can occur as a result of trauma, infection, or surgical procedures involving the anterior cranial fossa. In rare cases, the fascia can also be a route for the spread of infections from the nasal cavity to the brain, leading to conditions such as meningitis or brain abscess.

Etymology[edit | edit source]

The term "cribriform" is derived from the Latin "cribrum," meaning sieve, and the suffix "-form," meaning shape or resemblance. This refers to the sieve-like appearance of the fascia, which is pierced by olfactory nerve fibers.

See also[edit | edit source]

Cribriform fascia Resources
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