Definition

1. Noun:
   • The ethmoidal sinuses: A collective term for the small, air-filled cavities located within the ethmoid bone, situated between the eyes and behind the bridge of the nose. They are part of the paranasal sinus system that drains into the nasal cavity.

Usage Examples

• Noun:
  • Inflammation of the sinus ethmoidales can cause pain and pressure between the eyes.
  • The CT scan revealed a blockage in the patient's sinus ethmoidales.

Advanced Usage

• Medical Context: The term is primarily used in anatomical, clinical, and surgical contexts. It is often discussed in relation to sinusitis (ethmoid sinusitis), polyps, or surgical procedures like functional endoscopic sinus surgery (FESS).
  • The surgeon carefully navigated the delicate structures of the sinus ethmoidales.

Variants and Related Words

• Ethmoid sinus (n): A more common singular or plural form (ethmoid sinuses) for the same anatomical structure.
  • The ethmoid sinus is divided into anterior and posterior groups.
• Ethmoidal air cells (n): An alternative anatomical term describing the same interconnected cavities.
  • The ethmoidal air cells are lined with mucous membrane.

Synonyms

• Ethmoid cells: A synonym emphasizing the multicellular structure.
• Ethmoidal sinus complex: A term highlighting the interconnected network of cavities.

Notes on Meaning

• The term "sinus ethmoidales" is the formal Latin-derived anatomical name. In everyday medical English, the anglicized versions "ethmoid sinus" or "ethmoid sinuses" are more frequently used. It specifically refers to the sinuses housed within the ethmoid bone, as opposed to the frontal, maxillary, or sphenoid sinuses.

Noun

1. a sinus of the meatuses of the nasal cavity (behind the bridge of the nose)