0204 Plant Sciences. 1  Plant Sciences, General. 2  Agronomy and Crop Science. 3  Horticulture Science.  Plant Breeding and 1  Genetics. Agricultural Plant Pathology.  Agricultural Plant 1  Physiology. Plant Protection (Pest Management)  Range Science and Management.
The roof of each nasal cavity is formed in its upper third to one half by the nasal bone and more inferiorly by the junctions of the upper lateral cartilage and nasal septum.Connective tissue and skin cover the bony and cartilaginous components of the dorsum of the nose.he nasal cavity (or nasal fossa) is a large air filled space above and behind the nose in the middle of the face. Each cavity is the continuation of one of the two nostrils.
The ethmoid bone is cubical in shape, and exceedingly light; it is situated at the anterior part of the base of the cranium, and assists in forming the medial walls of the orbital cavities, the septum of the nose, and the roof and lateral walls of the nasal cavity.t consists of four parts: a horizontal, perforated plate named the cribriform plate, a perpendicular plate and two labyrinths or lateral masses. The cribriform plate of the ethmoid (fig. 366) occupies the ethmoidal notch of the frontal bone and forms a part of the roof of the nasal cavity.