Which term refers to the sieve-like plate in the skull?

Which term refers to the sieve-like plate in the skull?

• A. Cribriform
• B. Cutaneous
• C. Cyanoderma
• D. Cystitis

Answer: (A)

The sieve-like plate is the cribriform plate of the ethmoid bone, located at the roof of the nasal cavity and forming part of the anterior cranial fossa. It has many tiny openings called olfactory foramina through which the smell receptors' nerve fibers pass from the nasal mucosa to the brain. The name cribriform comes from Latin cribrum, meaning sieve, which describes its perforated, sieve-like appearance. The other terms don’t refer to skull anatomy: cutaneous relates to the skin, cyanoderma to bluish skin discoloration, and cystitis to inflammation of the bladder.

The sieve-like plate is the cribriform plate of the ethmoid bone, located at the roof of the nasal cavity and forming part of the anterior cranial fossa. It has many tiny openings called olfactory foramina through which the smell receptors' nerve fibers pass from the nasal mucosa to the brain. The name cribriform comes from Latin cribrum, meaning sieve, which describes its perforated, sieve-like appearance. The other terms don’t refer to skull anatomy: cutaneous relates to the skin, cyanoderma to bluish skin discoloration, and cystitis to inflammation of the bladder.