A year of study is two semesters of study in the same or related subject area. In general, the course is about 50 minutes per day, five days a week, for two semesters. However, local school districts determine the actual organization of instructional time depending on their master schedule.
Medical Definition of middle meatus. : a curved anteroposterior passage in each nasal cavity that is situated below the middle nasal concha and extends along the entire superior border of the inferior nasal conchaâcompare inferior meatus, superior meatus.
This irregular bone forms part of the orbital complex, floor of the cranium, roof of the nasal cavity, and part of the nasal septum. Features of this bone include: cribriform plate-superior surface of the ethmoid perforated by olfactory foramina through which the olfactory nerves pass.his irregular bone forms part of the orbital complex, floor of the cranium, roof of the nasal cavity, and part of the nasal septum. Features of this bone include: cribriform plate-superior surface of the ethmoid perforated by olfactory foramina through which the olfactory nerves pass.