Vad är frontal sinus

Summary. location: anterior frontal bones on either side of the midline behind the brow ridges. blood supply: supratrochlear, supraorbital and anterior ethmoidal arteries. innervation: supraorbital and supratrochlear nerves. The frontal sinuses are one of the four pairs of paranasal sinuses that are situated behind the brow ridges. Sinuses are mucosa -lined airspaces within the bones of the face and skull.

Each opens into the anterior part of the corresponding middle nasal meatus of the nose through the frontonasal duct which traverses the anterior part of the. The frontal sinuses are paired air-filled cavities in frontal bone of the skull and one of the four different paranasal sinuses, along with the maxillary sinus, sphenoidal sinus and ethmoidal air cells.

They are the most superior of these sinuses and typically appear triangular-shaped. The Frontal Sinus Drainage Pathway and Related Structures. The purpose of this pictorial essay is to provide a visual guide to the frontal sinus drainage pathway (FSDP), associated anatomic structures, and normal variations in sinus anatomy (Figs 1 – 9).

Frontal sinus. The size and shape of the frontal sinus can vary from person to person. These spaces fill up with mucus, which then drain into the nose. The draining process can be hindered.