TEST BANK FOR ILLUSTRATED DENTAL EMBRYOLOGY HISTOLOGY AND ANATOMY 5TH EDITION BY FEHRENBACH

Chapter 02: Oral Cavity and Pharynx Fehrenbach: Illustrated Dental Embryology, Histology, and Anatomy, 5th Edition MULTIPLE CHOICE 1. Which of the following oral landmarks may be noted on the soft palate? a. Incisive papilla b. Palatine rugae c. Median palatine raphe d. Uvula ANS: D A midline muscular structure, the uvula of the palate, hangs down from the posterior margin of the soft palate. The incisive papilla is a small bulge of tissue at the most anterior part of the hard palate. The median palatine raphe is a midline ridge of tissue on the hard palate. The palatine rugae are firm, irregular ridges of tissue on the hard palate. DIF: Recall REF: Chapter 2, Palate, Page 15 OBJ: 2 TOP: CDA, GC, I.B.6 | NBDHE, Anatomic Sciences (Anatomy, Head and neck anatomy) 2. Which of the following oral landmarks separates the base from the body of the tongue? a. Sublingual fold b. Lingual tonsil c. Plica fimbriatae d. Sulcus terminalis ANS: D 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. DIF: Recall REF: Chapter 2, Tongue, Page 15 OBJ: 2 TOP: CDA, GC, I.B.6 | NBDHE, Anatomic Sciences (Anatomy, Head and neck anatomy) 3. Which of the following statements concerning Fordyce spots is correct? a. Composed of salivary gland tissue b. Located on attached gingiva c. Composed of sebum from sebaceous tissue d. Indicate disease state in 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. DIF: Comprehension REF: Chapter 2, Clinical Considerations with Oral Mucosa, Page 10 OBJ: 1 TOP: CDA, GC, I.B.6 | NBDHE, Physiology 4. 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. DIF: Recall REF: Chapter 2, Gingival Tissue, Page 13 OBJ: 2 TOP: CDA, GC, I.B.6 | NBDHE, Anatomic Sciences (Anatomy, Head and neck anatomy) 5. 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 dentinal 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. DIF: Recall REF: Chapter 2, Jaws, Alveolar Processes, and Teeth, Page 10 OBJ: 2 TOP: CDA, GC, I.B.7 | NBDHE, Anatomic Sciences (Anatomy, Dental anatomy, Root anatomy) 6. 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