MULTIPLE CHOICE 1. The primary purpose of the ciliated mucous membrane in the nose is to: a. Warm the inhaled air. b. Filter out dust and bacteria. c. Filter coarse particles from inhaled air. d. Facilitate the movement of air through the nares. ANS: B The nasal hairs filter the coarsest matter from inhaled air, whereas the mucous blanket filters out dust and bacteria. The rich blood supply of the nasal mucosa warms the inhaled air. DIF: Cognitive Level: Remembering (Knowledge) MSC: Client Needs: General 2. The projections in the nasal cavity that increase the surface area are called the: a. Meatus. b. Septum. c. Turbinates. d. Kiesselbach plexus. ANS: C The lateral walls of each nasal cavity contain three parallel bony projections: the superior, middle, and inferior turbinates. These increase the surface area, making more blood vessels and mucous membrane available to warm, humidify, and filter the inhaled air. DIF: Cognitive Level: Remembering (Knowledge) MSC: Client Needs: General 3. The nurse is reviewing the development of the newborn infant. Regarding the sinuses, which statement in relation to a newborn infant is true? a. Sphenoid sinuses are full size at birth. b. Maxillary sinuses reach full size after puberty. c. Frontal sinuses are fairly well developed at birth. d. Maxillary and ethmoid sinuses are the only sinuses present at birth. ANS: D Only the maxillary and ethmoid sinuses are present at birth. The sphenoid sinuses are minute at birth and develop after puberty. The frontal sinuses are absent at birth, are fairly well developed at age 7 to 8 years, and reach full size after puberty. DIF: Cognitive Level: Remembering (Knowledge) MSC: Client Needs: General 4. The tissue that connects the tongue to the floor of the mouth is the: a. Uvula.