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.
The bones of the face and skull near the nose contain four pairs of air-filled pockets, which are called the paranasal sinuses. The paranasal sinuses include the following types of sinuses: A maxillary sinus in each cheek. Between six and 12 ethmoid sinuses on each side of the nose between the eyes.