title: Light microscopic study of blood vessels of the nasal cavity of the pig.
abstract: 4 adult pigs were used for light microscopic studies to depict the relationship between nasal blood vessels and the surface epithelium, and to describe the histomorphology of these vessels. After giving an electric shock, animals were bled to death. Tissues were collected from three regions in the nasal cavity after splitting heads sagitally. Different types of vessels were described and a new classification was suggested. Arteries were muscular in type with, as well as without, internal elastic laminae. Thick-walled veins (characterized by smooth muscle cells in the tunica media) were present throughout the nasal cavity, while thin-walled veins or cavernous spaces were discernible only in the caudal one third of the nasal cavity. Further, arteriovenous anastomoses, epithelioid arterioles, and free smooth muscle cells in the propria submucosa were observed throughout the nasal cavity.
mesh_terms: D000818:Animals; D001158:Arteries / Q000033:anatomy & histology; D001163:Arteriovenous Anastomosis / Q000033:anatomy & histology; D009296:Nasal Cavity / Q000033:anatomy & histology / Q000098:blood supply*; D012222:Rhinitis, Atrophic / Q000662:veterinary; D013552:Swine / Q000033:anatomy & histology*; D013553:Swine Diseases / Q000503:physiopathology; D014680:Veins / Q000033:anatomy & histology