Anatomy of the Oral Cavity, Exams of Nursing

Download Anatomy of the Oral Cavity and more Exams Nursing in PDF only on Docsity! Dental Embryology Histology And Anatomy 4th Edition Test Bank Exam Questions And Answers 1. prominent on the maxilla. a. premolar b. canine c. molar d. incisor ANS: B The facial part of the alveolus of each canine, the vertically placed canine eminence, is especially prominent on each side of the maxilla. The alveolar process, or alveolar bone, is the bony extension for both the maxilla and mandible that contains each tooth socket of the teeth or alveolus (plural, alveoli). 2. Surrounding the teeth in the alveoli and covering the alveolar processes is the , which is composed of a firm pink tissue. a. gingiva b. minor salivary glands c. Fordyce spots d. linea alba ANS: A Surrounding the maxillary and mandibular teeth in the alveoli and covering the alveolar processes are the soft tissue gums, or gingiva (or more accurately, but not commonly, by the dental community, gingivae), composed of a firm pink mucosa. Minor salivary glands are deep within the oral mucosa throughout the oral cavity. Fordyce spots are visible as small, yellowish elevations on the oral mucosa; they represent deeper deposits of sebum from trapped or misplaced sebaceous gland tissue, usually associated with hair follicles. The linea alba is a white ridge of hyperkeratinization that extends horizontally at the level where the maxillary and mandibular teeth come together and occlude; similar ridges of white tissue can sometimes be present on the tongue perimeter. 3. What is the midline ridge of tissue on the hard palate? a. Incisive papilla b. Palatine rugae c. Median palatine raphe d. Uvula ANS: C The median palatine raphe is a midline ridge of tissue on the hard palate. The incisive papilla is a small bulge of tissue at the most anterior part of the hard palate. The palatine rugae are firm, Posteriorly on the dorsal surface of the tongue is an inverted V-shaped groove, the sulcus terminalis; it separates the base from the body of the tongue, demarcating a line of fusion of tissue during the tongue’s development. A ridge of tissue on each side of the floor of the mouth, the sublingual fold, joins in a V-shaped configuration extending from the lingual frenum to the base of the tongue; it contains openings of the sublingual duct from the sublingual salivary gland. Even farther posteriorly on the dorsal surface of the base of the tongue is an irregular mass of tissue, the lingual tonsil. Lateral to each deep lingual vein on the ventral surface of the tongue is the plica fimbriata (plural, plicae fimbriatae) with fringelike projections. 9. Which of the following statements concerning Fordyce spots is correct? a. Composed of salivary gland tissue b. Located on the attached gingiva c. Composed of sebum from sebaceous tissue d. Indicate a disease state in the tissue ANS: C On the surface of the labial and buccal mucosa is a common variation, Fordyce spots. These are visible as small, yellowish elevations on the oral mucosa. They represent deeper deposits of sebum from trapped or misplaced sebaceous gland tissue, usually associated with hair follicles. 10. The line of demarcation between the attached gingiva and the alveolar mucosa is the: a. mucogingival junction. b. interdental gingiva. c. mucobuccal fold. d. marginal gingiva. ANS: A The line of demarcation between the firmer and pinker attached gingiva and the movable and redder alveolar mucosa is the scallop-shaped mucogingival junction. The interdental gingiva is the gingival tissue between adjacent teeth adjoining attached gingiva. Deep within each vestibule is the vestibular fornix, where the pink labial mucosa or buccal mucosa meets the redder alveolar mucosa at the mucobuccal fold. At the gingival margin of each tooth is the marginal gingiva, which forms a cuff above the neck of the tooth. 11. The root of the mature and fully erupted tooth is composed of: a. enamel, dentin, and pulp. b. dentin and pulp. c. dentin, pulp, and cementum. d. pulp, cementum, and periodontal ligament. ANS: C The crown of the tooth is composed of the extremely hard outer enamel layer and the moderately hard inner dentin layer overlying the pulp of the tooth. The pulp is the soft innermost layer in the tooth. The moderately hard dentin continues to cover the soft tissue of the pulp of the tooth in the root(s), but the outermost layer of the root(s) is composed of cementum. The bonelike cementum is the part of the tooth that attaches to the periodontal ligament, which then attaches to the alveolus of bone, holding the tooth in its socket. 12. Which of the following lingual papillae are located on the lateral surface of the tongue? a. Circumvallate papillae b. Filiform papillae c. Fungiform papillae d. Foliate papillae ANS: D Certain surfaces of the tongue have small, elevated structures of specialized mucosa, the lingual papillae, some of which are associated with taste buds. The side or lateral surface of the 16. Adult teeth, or teeth, also include all the same teeth as the primary teeth as well as premolars. a. deciduous b. permanent c. baby d. primary ANS: B Adult teeth, or permanent teeth, also include all the same teeth as the primary teeth, as well as premolars. The tooth types in both arches of the teeth of children, or primary teeth, include incisors, canines, and molars. Other terms for the primary teeth are the deciduous or “baby” teeth. 17. Which of the following orofacial structures contains the alveolus of a tooth? a. Vestibular fornix b. Alveolar process c. Zygomatic arch d. Retromolar pad ANS: B The alveolar process, or alveolar bone, is the bony extension for both the maxilla and mandible that contains each tooth socket of the teeth or alveolus (plural, alveoli). The alveolar process, or alveolar bone, is the bony extension for both the maxilla and mandible that contains each tooth socket of the teeth or alveolus (plural, alveoli). Farther laterally is the zygomatic region, which overlies the bony support for the cheek, the zygomatic arch. On the lower jaw is a dense pad of tissue located just distal to the last tooth of the mandibular arch, the retromolar pad. 18. The oral tissue closest to the inner cheek is best described as: a. labial. b. facial. c. buccal. d. palatal. ANS: C The facial structures close to the inner cheek are buccal. The structures closest to the tongue are lingual. The lingual structures closest to the palate are palatal. The structures closest to the facial surface are facial. The facial structures closest to the lips are labial. 19. The outermost layer of the root is composed of: a. cementum. b. pulp. c. dentin. d. enamel. ANS: A The crown of the tooth is composed of the extremely hard outer enamel layer and the moderately hard inner dentin layer overlying the pulp of the tooth. The pulp is the soft innermost layer in the tooth. The moderately hard dentin continues to cover the soft tissue of the pulp of the tooth in the root(s), but the outermost layer of the root(s) is composed of cementum. The bonelike cementum is the part of the tooth that attaches to the periodontal ligament. 20. Just distal to the last tooth of the maxillary arch is a tissue-covered elevation of the bone called the: a. maxillary arch. b. maxillary tuberosity. c. canine eminence. d. retromolar pad. ANS: B Just distal to the last tooth of the maxillary arch is a tissue-covered elevation of the bone, the maxillary tuberosity. Similarly, on the lower jaw is a dense pad of tissue located just distal to the last tooth of the mandibular arch, the retromolar pad. The alveolar processes with the teeth in the alveoli are also called dental arches, the maxillary arch and mandibular arch. The facial part of the alveolus of each canine, the vertically placed canine eminence, is especially prominent on each side of the maxilla. 21. On which of the following orofacial tissue is the linea alba located? a. Attached gingiva b. Marginal gingiva c. Labial mucosa d. Buccal mucosa midline between the labial mucosa and the alveolar mucosa on the upper and lower dental arches. 25. Each body of the maxilla is superior to the teeth and contains the sinuses. a. sphenoidal b. ethmoidal c. frontal d. maxillary ANS: D Each body of the maxilla, a facial bone, is superior to the teeth and contains the maxillary sinus. The other sinuses listed—the sphenoidal, ethmoidal, and frontal—are contained within the cranial bones. 26. The facial part of the alveolus of the , the vertically placed eminence, is especially