Features of the blood supply of the ethmoid labyrinth in people of different age

Abstract

The sources of arterial blood supply to the walls of the labyrinth of the ethmoid bone and the mucous membrane of its cells are the anterior, posterior and, often, the middle ethmoid arteries from the system of the internal carotid artery, as well as the lateral nasal artery (branch of the sphenopalatine) from the system of the external carotid artery. Along with this, branches of the ophthalmic artery (median group), as well as branches from the mesh of the lacrimal sac and the frontal branch of the middle meningeal artery (external carotid artery system) participate in the blood supply of the walls of the cells of the labyrinth of the ethmoid bone. In the topography of the ophthalmic and sphenopalatine arteries and their branches, there are clearly defined individual variants and extreme forms.