NUR 300 Lecture Notes - Lecture 4: Foreign Body, Asthma, Suprasternal Notch
Document Summary
Anatomy and physiology: identification of odors, passageway for inspired and expired air, humidification, filtration, and warmth of inspired air, resonation of laryngeal sound. Exterior nose: formed by bone and cartilage, covered by skin. Nares surrounded by cartilaginous ala nasa and columella. Frontal and maxillary bones form the nasal bridge. Posterior openings leading to nasopharynx: divided by septum into 2 anterior cavities, cribriform plate houses sensory endings of olfactory nerve, kiesselback"s plexus, adenoids, lateral walls of nose are formed by turbinates protrude into the nasal cavity. Curved bony structures covered by vascular mucous membranes that run horizontally. Convergence of small fragile arteries and veins. Located superficially on anterior superior portion of septum. Air filled paired extensions of nasal cavities within bones of skull. Lies along lateral wall of nasal cavity in maxillary bone. Are deep in skill behind ethmoid sinuses. In frontal bone superior to nasal cavities: move secretions along.
