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.
It contains the sockets where the incisor teeth are held. It also contains the anterior nasal spine, the whole thickness of the alveolus and the corresponding part of the floor of the nose. The hard palate creates part of the roof of the mouth. It is concave and covered with holes called foramina. These holes allow the passageway of nutrient vessels, palatine vessels and nerves. The surface is uneven and rough to the touch.