poc III chapter 4 review questions

29. During an oral examination, you ask the client to protrude the tongue. What muscle is necessary for this action? a. Hypoglossus b. Genioglossus c. Palatoglossus d. Styloglossus

Genioglossus

22. Which one of the following muscles of facial expression encircles the mouth and is responsible for closure of the lips? a. Orbicularis oris b. Buccinator c. Levator anguli oris d. Depressor anguli oris

Orbicularis oris

11. Which of the following is a landmark on the sphenoid bone for the attachment of many of the muscles of mastication? a. Body of the sphenoid b. Lesser wing c. Greater wing d. Pterygoid process

Pterygoid process

27. Which of the following muscle groups elevate the hyoid bone? a. Intrinsic tongue muscles b. Extrinsic tongue muscles c. Suprahyoid muscles d. Infrahyoid muscles

Suprahyoid muscles

69. Knowledge of the trigeminal nerve is critical for the successful administration of a local anesthetic agent. Which of the following cranial nerves is the trigeminal nerve? a. I b. III c. IV d. V

V

63. All the following are branches of the maxillary division of the trigeminal nerve EXCEPT the a. infraorbital nerve. b. anterior superior alveolar nerve. c. auriculotemporal nerve. d. nasopalatine nerve.

auriculotemporal nerve

47. The palatine tonsil is commonly enlarged in children. This tonsil is also referred to as the adenoids. a. Both statements are TRUE. b. Both statements are FALSE. c. The first statement is TRUE; the second statement is FALSE. d. The first statement is FALSE; the second statement is TRUE.

both statements are FALSE The pharyngeal tonsils, located on the midline of the posterior wall of the nasopharynx, are commonly referred to as "adenoids," are enlarged in children.

40. Salivary glands in the soft palate (buccal, labial, and lingual mucosa) secrete mostly mucous fluid. Von Ebner glands located in the circumvallate lingual papillae secrete only serous fluid. a. Both statements are TRUE. b. Both statements are FALSE. c. The first statement is TRUE; the second statement is FALSE. d. The first statement is FALSE; the second statement is TRUE.

both statements are TRUE

55. The facial vein communicates with the cavernous venous sinus; this sinus can become fatally infected through the spread of dental infection. a. Both statements are TRUE. b. Both statements are FALSE. c. The first statement is TRUE; the second statement is FALSE. d. The first statement is FALSE; the second statement is TRUE.

both statements are TRUE

1. All references to body structures are made assuming the body is in anatomical position; anatomical position is the erect position of the body, arms at the sides, with head, eyes, and palms facing forward. a. Both statements are TRUE. b. Both statements are FALSE. c. The first statement is TRUE, and the second statement is FALSE. d. The first statement is FALSE, and the second statement is TRUE.

both statements are true

58. Dental infections can lead to serious complications because veins in the head and neck generally lack valves that prevent the backflow of blood. a. Both the statement and reason are correct and related. b. Both the statement and reason are correct but NOT related. c. The statement is correct but the reason is NOT. d. NEITHER the statement NOR reason is correct.

both the statement and reason are correct and related

59. The central nervous system consists of the following: a. sympathetic nervous system. b. parasympathetic nervous system. c. brain and spinal cord. d. nerves, receptors, muscles, and glands of the body.

brain and spinal cord

24. The muscle of facial expression that aids in mastication is the a. risorius. b. buccinator. c. mentalis. d. masseter.

buccinator.

51. Which of the following lymph nodes empty into the jugular trunk? a. Deep cervical nodes b. Superficial nodes c. Submandibular nodes d. Facial nodes

deep cervical nodes

2. The anatomical term that best describes the top surface of the tongue is a. superior. b. inferior. c. ventral. d. dorsal.

dorsal

60. Nerves that carry impulses away from the brain or spinal cord to a body structure are known as a. synapse. b. ganglion. c. afferent. d. efferent.

efferent

52. Leukocytes are white blood cells that protect the body against infection. All the following are leukocytes EXCEPT a. neutrophils. b. eosinophils. c. basophils. d. erythrocytes.

erythrocytes

66. Damage to this nerve can result in facial paralysis or Bell palsy. a. Trigeminal b. Facial c. Buccal d. Hypoglossal

facial

33. Which of the following describes the type of movement achieved by the temporomandibular joint? a. Gliding only b. Gliding and rotation c. Rotation only d. Gliding, rotation, and extension

gliding and rotation

62. Which of the following nerves is paired correctly with the tissue it innervates? a. Glossopharyngeal nerve, base of tongue b. Buccal nerve, buccinator muscle c. Hypoglossal nerve, extrinsic tongue muscles d. Facial nerve, parotid gland

glossopharyngeal nerve, base of tongue

57. Which one of the following statements is NOT true about the pterygoid plexus? a. Drains portions of the face into the maxillary vein b. Can be involved in the spread of dental infections by improper administration of local anesthesia c. Protects the maxillary artery d. Has valves that prevent backflow of blood

has valves that prevent backflow of blood

61. The sympathetic nervous system prepares the body for stressful situations, or "fight-or-flight" Response. Which of the following symptoms might a client with severe dental anxiety exhibit during the dental appointment? a. Decrease in blood pressure b. Increase in salivary flow c. Dental caries d. Increase in heart rate

increase the heart rate

49. Pea-like firmness of the facial lymph nodes might indicate a. infection from adjacent teeth. b. infection from the upper lip. c. infection from tonsils. d. normal health.

infection from adjacent teeth

19. When a skeletal muscle contracts to cause a given movement, the more movable end of attachment of the muscle is termed its a. origin. b. insertion. c. antagonist. d. synergist.

insertion.

3. Which of the following results in the formation of the flat bones of the skull? a. Osteoclasts b. Osteocytes c. Intramembranous ossification d. Endochondral ossification

intramembranous ossification

48. Which of the following lymph nodes is easily palpable in clients with tonsillar lymphadenopathy? a. Submental node b. Jugulodigastric node c. Jugulo-omohyoid node d. Accessory node

jugulodigastric node

70. Which of the following nerves is NOT part of the mandibular division of the trigeminal nerve? a. Buccal b. Mental c. Lacrimal d. Incisive

lacrimal

28. All the following muscles of mastication elevate the mandible EXCEPT the a. masseter. b. medial pterygoid. c. temporalis. d. lateral pterygoid.

lateral pterygoid.

79. Which of the following local anesthetic agents would be a better choice for Ms. Thomas because of her hypertension? a. Lidocaine hydrochloride with epinephrine b. Mepivacaine hydrochloride c. Benzocaine topical anesthetic d. Lidocaine without epinephrine

lidocaine without epinephrine

73. What is the purpose of synovial fluid in the synovial joint? a. Lubricates the joint b. Transports nutrients to the joint c. Prevents displacement of the joint d. Stabilizes the joint

lubricates the joint

64. The only trigeminal nerve division carrying both afferent and efferent nerves is the a. ophthalmic. b. mandibular. c. maxillary. d. facial.

mandibular

68. Which of the following nerves enters the skull through the foramen ovale? a. Ophthalmic b. Maxillary c. Mandibular d. Zygomatic

mandibular

71. Which of the following nerves innervates the four muscles of mastication? a. Mandibular b. Maxillary c. Ophthalmic d. Trigeminal

mandibular

72. Which of the following nerves is the largest of the trigeminal branches? a. Maxillary b. Facial c. Ophthalmic d. Mandibular

mandibular

54. Which of the following arteries supplies the muscles of mastication? a. Occipital artery b. Maxillary artery c. Facial artery d. Lingual artery

maxillary artery

18. Infection of the following sinuses can cause discomfort and complications with the maxillary posterior teeth: a. maxillary. b. ethmoid. c. sphenoid. d. frontal.

maxillary.

81. Infiltration of all the following nerves would help anesthetize quadrant I EXCEPT the a. greater palatine. b. mental. c. posterior superior alveolar. d. nasopalatine.

mental

65. Which of the following nerves is not always present in the oral cavity? a. Greater palatine b. Mental c. Middle superior alveolar d. Anterior superior alveolar

middle superior alveolar

80. To make sure that tooth #5 is anesthetized, which of the following nerves would be infiltrated during anesthesia? a. Posterior superior alveolar b. Middle superior alveolar c. Anterior superior alveolar d. Nasopalatine

middle superior alveolar

31. The muscle that unites with its counterpart to form the floor of the mouth is the a. stylohyoid b. digastric c. mylohyoid d. geniohyoid

mylohyoid

4. Each of the following bones of the skull is considered a facial bone EXCEPT the a. maxillae. b. occipital bone. c. zygomatic bone. d. lacrimal bone.

occipital bone

8. Which of the following bones has paired canals that transmit cranial nerve XII, hypoglossal? a. Sphenoid bone b. Occipital bone c. Maxilla d. Mandible

occipital bone

10. In which of the following pairs is a moveable articulation formed? a. Frontal bone with parietal bones b. Coronoid process with mandibular fossa c. Occipital condyles with first cervical vertebrae (atlas) d. Coronoid notch with mandibular fossa

occipital condyles with first cervical vertebrae (atlas)

25. Lateral deviation of the mandible occurs when a. the medial pterygoid muscle is contracted. b. the digastric muscle is contracted. c. one head of the lateral pterygoid muscle is contracted. d. both heads of the lateral pterygoid muscle are contracted.

one head of the lateral pterygoid muscle is contracted.

41. Which of the following glands secrete hormones to regulate calcium metabolism and phosphorus uptake? a. Thymus b. Thyroid c. Parathyroid d. Adrenal

parathyroid

45. Which of the following glands is the largest salivary gland? a. Parotid b. Submandibular c. Sublingual d. Lacrimal

parotid

36. All the following major salivary glands secrete mixed secretions EXCEPT the a. parotid gland. b. submandibular salivary gland. c. sublingual salivary gland. d. Von Ebner gland.

parotid gland

76. Which of the following is mostly likely the swollen lymph node identified by the dental hygienist during an extraoral examination? a. Occipital b. Posterior auricular c. Preauricular d. Submental

preauricular

38. The sublingual caruncle a. receives the parotid duct. b. receives the sublingual duct. c. receives the submandibular duct. d. receives the Bartholin duct.

receives the submandibular duct

39. A ligament associated with the temporomandibular joint is an important landmark for local anesthesia. Name the landmark and the nerve block. a. Sphenomandibular ligament, inferior alveolar b. Sphenomandibular ligament, long buccal c. Stylomandibular ligament, long buccal d. Temporomandibular joint ligament, inferior alveolar

sphenomandibular ligament, inferior alveolar

9. Which part of the temporal bone forms the cranial portion of the temporomandibular joint? a. Squamous part b. Tympanic part c. Zygomatic process d. Petrous part

squamous part

44. The salivary gland most often associated with salivary stone formation is the a. parotid. b. submandibular. c. sublingual. d. lacrimal.

submandibular

50. Which of the following lymph nodes drain the cheek, hard palate, tongue, and anterior nasal cavity? a. Submental nodes b. Submandibular nodes c. Facial nodes d. Occipital nodes

submandibular nodes

56. Which of the following facial arteries supplies the submandibular salivary gland? a. Ascending palatine artery b. Submental artery c. Inferior labial artery d. Superior labial artery

submental artery

82. Which of the following would the dental hygienist NOT do during the reevaluation appointment? a. Assess bleeding on probing. b. Assess the gingival health. c. Remove residual calculus. d. Take four horizontal bitewings.

take four horizontal bitewings

20. All the following are muscles of facial expression EXCEPT the a. orbicularis oculi. b. buccinator. c. temporalis. d. mentalis.

temporalis.

35. The temporomandibular joint is innervated by the a. hypoglossal nerve. b. trigeminal nerve. c. facial nerve. d. accessory nerve.

trigeminal nerve

7. All three branches of which one of the following nerves passes through foramina on the sphenoid bone? a. Facial nerve b. Glossopharyngeal nerve c. Hypoglossal nerve d. Trigeminal nerve

trigeminal nerve

13. All the following are paired facial bones EXCEPT the a. nasal bone. b. maxilla bone. c. zygomatic bone. d. vomer.

vomer.

77. Which of the following American Academy of Periodontology classifications would Ms. Thomas's periodontal condition be documented as? a. AAP type I b. AAP type II c. AAP type III d. AAP type IV

AAP type IV

23. The muscles of mastication consist of four paired muscles inserting on the mandible. The muscles of mastication are innervated by the mandibular division of cranial nerve V. a. Both statements are TRUE. b. Both statements are FALSE. c. The first statement is TRUE, and the second statement is FALSE. d. The first statement is FALSE, and the second statement is TRUE.

Both statements are TRUE.

30. Intrinsic tongue muscles are located entirely inside the tongue. These muscles act to change the shape of the tongue. a. Both statements are TRUE. b. Both statements are FALSE. c. The first statement is TRUE, and the second statement is FALSE. d. The first statement is FALSE, and the second statement is TRUE.

Both statements are TRUE.

16. Which of the following landmarks on the ramus of the mandible serves as a landmark for determining the height of injection for the inferior alveolar nerve block? a. Coronoid process b. Mandibular notch c. Coronoid notch d. Lingula

Coronoid notch

12. Which of the following structures is perforated by foramina for the passage of olfactory nerves for the sense of smell? a. Sphenoid bone b. Maxillary tuberosity c. Cribriform plate d. Ethmoidal sinuses

Cribriform plate

14. An important landmark for local anesthesia lies posterior to the most distal maxillary molar. Identify the landmark and the nerve that passes through its foramina. a. Infraorbital foramen, infraorbital nerve b. Greater palatine foramen, greater palatine nerve c. Maxillary tuberosity, posterior superior alveolar nerve d. Incisive foramen, nasopalatine nerves

Maxillary tuberosity, posterior superior alveolar nerve

17. Which of the following is an important landmark to note radiographically to avoid misinterpretation as an oral radiolucent lesion? a. Mental foramen b. Genial tubercles c. Mandibular foramen d. Mental protuberance

Mental foramen

21. When contracted, which of the following muscles tightens and narrows the vestibule, making access to the facial aspect of the mandibular incisors difficult? a. Buccinator b. Mentalis c. Levator labii superioris d. Depressor labii inferioris

Mentalis

26. Which of the following occurs when one side of the sternocleidomastoid muscle is contracted? a. The head and neck bend to the same side. b. The head and neck bend to the opposite side. c. The head flexes and extends the neck. d. The head flexes and remains stable.

The head and neck bend to the same side.

78. Which of the following premolars are often extracted before orthodontic treatment? a. Tooth #1 and tooth #16 b. Tooth #5 and tooth #12 c. Tooth #6 and tooth #11 d. Tooth #20 and tooth #29

Tooth #5 and Tooth #12

53. The most reliable arterial pulse in the body is located in the a. internal carotid artery. b. external carotid artery. c. carotid sinus. d. lingual artery.

carotid sinus

32. Taste sensations for the body of the tongue are provided by which of the following nerves? a. Maxillary division of the trigeminal b. Mandibular division of the trigeminal c. Chorda tympani branch of the facial d. Greater petrosal branch of the facial

chorda tympani branch of the facial

34. The articular fossa of the temporal bone articulates with the mandible at the temporomandibular joint at which landmark? a. Articular eminence b. Articular fossa c. Zygomatic process of the temporal bone d. Condyle

condyle

5. The articulation between the frontal bone and the parietal bones is the a. coronal suture. b. sagittal suture. c. frontonasal suture. d. lambdoidal suture.

coronal suture

75. All of the following cranial nerves are part of the pharyngeal plexus and pass through the skull by way of the jugular foramen EXCEPT a. cranial nerve VI (abducens nerve). b. cranial nerve IX (glossopharyngeal nerve). c. cranial nerve X (vagus nerve). d. cranial nerve XI (accessory nerve).

cranial nerve VI (abducens nerve)

15. Infiltration of local anesthetic is more successful in mandibular anterior teeth than mandibular posterior teeth because a. the alveolar process of the mandibular incisors is less dense. b. the alveolar process of the mandibular incisors is denser. c. the alveolar process of the mandibular incisors is absent. d. the body of the mandible is less dense than the alveolar process

the alveolar process of the mandibular incisors is less dense.

6. The petrous portion of the temporal bone contains the mastoid process. This process serves as an attachment for the trapezius muscle. a. Both statements are TRUE. b. Both statements are FALSE. c. The first statement is TRUE, and the second statement is FALSE. d. The first statement is FALSE, and the second statement is TRUE.

the first statement is TRUE, and the second statement is FALSE

67. The facial nerve travels through the parotid gland; innervation of the parotid gland is provided by the facial nerve. a. Both statements are TRUE. b. Both statements are FALSE. c. The first statement is TRUE; the second statement is FALSE. d. The first statement is FALSE; the second statement is TRUE.

the first statement is TRUE, the second statement is FALSE The facial nerve travels through the parotid gland but does not innervate it; innervation of the parotid gland is by way of the glossopharyngeal nerve, cranial nerve IX.

74. The four muscles of mastication are the masseter, temporalis, medial pterygoid, and lateral pterygoid; these muscles of mastication are innervated by the cranial nerve VI. a. Both statements are TRUE. b. Both statements are FALSE. c. The first statement is TRUE; the second statement is FALSE. d. The first statement is FALSE; the second statement is TRUE.

the first statement is TRUE, the second statement is FALSE The four muscles of mastication—masseter, temporalis, medial pterygoid, and lateral pterygoid—are innervated by the third division, V3 of the trigeminal nerve.

43. The thymus gland is an endocrine gland because it has an associated duct. a. Both the statement and reason are correct and related. b. Both the statement and reason are correct but NOT related. c. The statement is correct but the reason is NOT. d. NEITHER the statement NOR reason is correct.

the statement is correct but the reason is NOT .The thymus gland is an endocrine gland because it has no associated duct.

37. The parotid gland produces the least volume of saliva because it is the smallest salivary gland. a. Both the statement and the reason are correct and related. b. Both the statement and the reason are correct but are NOT related. c. The statement is correct, but the reason is NOT correct. d. NEITHER the statement NOR the reason is correct.

the statement is correct, but the reason is NOT correct The parotid salivary gland is the largest of the salivary glands but produces only 25% of the total salivary volume, which is mainly serous.

42. Which of the following is NOT an exocrine gland of the head? a. Parotid gland b. Lacrimal gland c. Von Ebner glands d. Thyroid gland

thyroid gland

46. When examining a healthy client, this exocrine gland moves with its associated cartilage. a. Parotid gland b. Thymus gland c. Thyroid gland d. Parathyroid gland

thyroid gland