Sahu N, et al. - Researchers described the anatomic connection of the nasal branch of the anterior ethmoid artery (NBAEA) to the frontal infundibulum, particularly the first olfactory fili, posterior frontal infundibulum, and anterior cribriform plate. NBAEA dissection was performed in 11 cadaveric heads, resulting in 21 dissections in total. According to findings, the NBAEA is an anatomically consistent landmark with minimal intercadaveric and intracadaveric variation. In order to determine the correct trajectory into the midline frontal sinus, it can be used reliably as a "sentinel artery" notifying the surgeon when approaching the first olfactory fili.