The frontonasal duct is a duct through which either frontal sinus drains into the nasal cavity. Each frontal sinus opens into the frontonasal duct by an...

The anterior ethmoidal air cells,: 612  and (usually: 612, 690 ) the frontonasal duct (which drains the frontal sinus): 690  open into the ethmoidal infundibulum...

part of the corresponding middle nasal meatus of the nose through the frontonasal duct which traverses the anterior part of the labyrinth of the ethmoid....

is continued upward as the frontonasal duct into the frontal air-sinus; when this continuity fails, the frontonasal duct opens directly into the anterior...

with the corresponding nasal cavity by means of a passage called the frontonasal duct. The seven bones which articulate to form the orbit. Medial wall of...

frontal lobe frontal nerve frontal plane frontal pole frontal sinus frontonasal duct fundiform ligament fundus fungiform papillae funiculus furcula fusiform...

ethmoidal cells, and in about 50% of skulls is continued upward as the frontonasal duct into the frontal sinus. One or more of the preceding sentences incorporates...

are basically made of mesenchyme that comes from the neural crest. The frontonasal prominence is a single structure that is ventral to the forebrain. It...

below the glabella, forming an indentation known as the nasion at the frontonasal suture where the frontal bone meets the nasal bones. The nasal dorsum...

area; a trench or channel Latin fossa, ditch, pit fossa ovalis front- of or pertaining to the forehead Latin frōns, front-, the forehead frontonasal...