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 the nasal cavity is formed anteriorly by the nasal bones, the nasal spine of the frontal bone, and the floor of the frontal sinus. In its more horizontal midpart, the roof is formed by the cribriform plate of the ethmoid bone.part from the nasal vestibule which is lined by stratified squamous epithelium, nasal cavity is lined by pseudostratified columner ciliated epithelium i.e. respiratory epithelium. Each nasal fossa has four walls; roof, floor, septal wall, and lateral wall.
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.