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.
Like the nasal cavity, the sinuses are lined with a mucous membrane composed of cells that produce mucus and have cilia. Incoming dirt particles are trapped by the mucus, and then moved by the cilia into the nasal cavity, through small sinus openings.Because these openings are so small, the drainage can easily be blocked by conditions such as colds or allergies, which produce swelling of the mucous membranes.now your nose The nasal cavity is divided into two passages by the nasal septum. The nasal septum is composed of both bone and cartilage and extends from the nostrils to the back of the throat. Bones called nasal conchae project into the lateral walls of the nasal cavity, forming a series of folds called turbinates.