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 surface ectoderm (or external ectoderm) forms the following structures: 1  Skin (only epidermis; dermis is derived from mesoderm) (along with glands, hair, and nails).2  Epithelium of the mouth and nasal cavity salivary glands, and glands of mouth and nasal cavity. Epithelium of the mouth and nasal cavity salivary glands, and glands of mouth and nasal cavity. 2  Tooth enamel (as a side note, dentin and dental pulp are formed from ectomesenchyme which is derived from ectoderm (specifically neural crest cells and travels with mesenchmyal cells).