Definition

Noun: * A branch of the ophthalmic artery supplying structures in and around the nasal capsule: The ethmoidal artery is a specific blood vessel. It originates from the ophthalmic artery, which is itself a branch of the internal carotid artery. Its primary function is to deliver oxygenated blood to the ethmoid bone and the surrounding tissues of the nasal cavity and sinuses.

Usage Examples

• Noun:
  • The surgeon carefully cauterized the anterior ethmoidal artery to control the epistaxis.
  • Damage to the ethmoidal artery during endoscopic sinus surgery can lead to significant bleeding.
  • The course of the ethmoidal artery is an important anatomical landmark for surgeons.

Advanced Usage

• Clinical/Surgical Context: The term is almost exclusively used in medical, anatomical, and surgical contexts. It is often specified as the anterior ethmoidal artery or posterior ethmoidal artery, denoting its two main branches which supply different specific regions of the ethmoidal labyrinth and nasal cavity.

Variants and Related Words

• Anterior ethmoidal artery (n): The branch that supplies the anterior ethmoidal air cells, frontal sinus, and parts of the nasal septum and lateral nasal wall.
• Posterior ethmoidal artery (n): The branch that supplies the posterior ethmoidal air cells and may give off a meningeal branch.
• Ethmoidal (adj): Pertaining to the ethmoid bone or its associated structures (e.g., ethmoidal sinuses, ethmoidal nerves).

Synonyms

• Arteria ethmoidalis (n): The formal Latin anatomical term.
• There are no common-language synonyms for this specific anatomical structure.

Related Phrases

• To ligate the ethmoidal artery: A surgical phrase meaning to tie off this artery to prevent bleeding.
• Bleeding from the ethmoidal artery: A phrase describing a potential complication in nasal or orbital surgery or trauma.

Notes on Meaning

This term has a single, highly specific meaning in human anatomy. It does not have idiomatic, figurative, or general language uses. Its understanding requires knowledge of basic vascular and cranial anatomy.

Noun

1. a branch of the ophthalmic artery supplying structures in and around the nasal capsule