1: Anatomic Sciences

Anatomic Sciences

QUESTIONS

1. Which paired muscle covers most of the lateral aspect of the ramus of the mandible?

2. During periodontal surgery, a fenestration is exposed on tooth #6. A fenestration is a defect of which type of bone?

3. The fibrous connective tissue membrane covering the outside of bone is called the

4. What is the purpose of the synovial membrane in a synovial joint?

5. Which component of a nerve conducts impulses toward the cell body?

6. Which spinal vertebrae fuse together to form a triangular mass?

7. The ophthalmic nerve is the first division of the fifth cranial nerve V, the trigeminal nerve. The maxillary nerve is the second division of the trigeminal nerve.

8. Which injections technique would be used to achieve anesthesia of teeth #15 and #16?

9. The infraorbital foramen is located in which bone?

10. All of the following are foramina in the sphenoid bone EXCEPT the

11. Which muscle retracts the tongue?

12. Which plane of dissection divides the body into anterior and posterior portions?

13. Teeth #3 and #14 are

14. The following characteristics describe muscle tissue EXCEPT one. Which one is the EXCEPTION?

15. Which lymph nodes drain both sides of the chin, the lower lip, the floor of mouth, the apex of tongue, and the mandibular incisors?

16. Which endocrine gland matures T-lymphocytes for the immune system and undergoes involution (reduces in size) after puberty?

17. The corrugator supercilii is a muscle of facial expression in which region?

18. Which muscle elevates the mandible?

19. Which muscle originates from the alveolar process of the maxilla, the alveolar process of the mandible, and the pterygomandibular raphe?

20. Which part of the brain regulates homeostasis?

21. Which branch of the trigeminal nerve contains both sensory and motor components?

22. Which of the following are the two main divisions or systems of the autonomic nervous system?

23. Which cranial nerve provides parasympathetic innervation to the cardiac muscles, thymus, and stomach?

24. Which of the following is NOT innervated by the middle superior alveolar nerve?

25. The muscles of facial expression are innervated by which nerve?

26. Which vein receives blood flow from the superficial temporal vein and the facial vein and drains into the external jugular vein?

27. The articulation of the temporomandibular joint involves which two bones?

28. Which artery supplies the mandibular teeth and surrounding tissues with blood?

29. Which major artery supplies the brain with blood and is palpated during emergency situations?

30. Which artery is the source of the ophthalmic artery, has NO branches, and is located deep to the sternocleidomastoid muscle?

31. The facial artery is a direct branch of which main artery?

32. Which of the following arteries supplies maxillary anterior teeth with blood?

33. The facial vein drains each region of the head and neck EXCEPT one. Which one is the EXCEPTION?

34. Veins of teeth have alveolar branches and dental branches. Which branch type would drain the pulp tissue of teeth through the apical foramen?

35. Which vein has NO valves, drains most of the head and neck region, and does NOT drain any of the dentition?

36. Many veins in the head and neck region lack valves. Valveless veins of the head and neck contribute to the severe and rapid spread of dental infections.

37. Each of the following is an afferent cranial nerve EXCEPT one. Which one is the EXCEPTION?

38. Which muscle, upon contraction, protrudes the tongue?

39. Each of the following is a suprahyoid muscle EXCEPT one. Which one is the EXCEPTION?

40. Cervical lymph nodes run along which muscle?

41. For each numbered muscle, select the most closely linked facial expression from the list provided.

Muscles of Facial Expression Facial Expression upon Contraction of Muscle
1. Mentalis A. Frowning
2. Risorius B. Raising chin and protruding lower lip
3. Corrugator supercilii C. Chewing
4. Levator anguli oris D. Stretching lips
5. Buccinator E. Smiling

42. For each numbered structure, select the most closely linked primary nodes that drain those structures from the list provided.

Anatomic Structure Lymph Node Drainage
1. Sublingual salivary gland A. Deep parotid
2. Parotid salivary gland B. Submandibular
3. Base of tongue C. Superior deep cervical
4. Paranasal sinus D. Submental
5. Lower lip E. Retropharyngeal

43. For each numbered temporomandibular joint (TMJ) disk position, select the most closely linked description of the movement from the list provided.

TMJ Disk Positions Movement
1. Elevation A. Shifting the mandible to one side by unilateral contraction of the lateral pterygoid muscle
2. Lateral deviation B. Opening the mouth by contraction of the inferior heads of the lateral pterygoid muscles and the suprahyoid muscles
3. Retraction C. Moving the jaw forward by bilateral contraction of the lateral pterygoid muscles
4. Protrusion D. Raising the lower jaw by contraction of all portions of the temporalis, masseter, and medial pterygoid muscles
5. Depression E. Moving the jaw back by contraction of the posterior portions of both temporalis muscles

44. The first branchial arch is also called the mandibular arch. The cartilage forming within the mandibular arch is known as Reichert cartilage.

45. Each of the following is a period of prenatal development EXCEPT one. Which one is the EXCEPTION?

46. Which cells are responsible for producing dentin?

47. Each of the following is a component of the tooth germ EXCEPT one. Which one is the EXCEPTION?

48. Order the stages of odontogenesis. Match each letter with its proper sequence number.

49. Division of a cell into two daughter cells occurs during which phase of mitosis?

50. The inner cells of the dental papilla will develop into which structure?

51. The earliest indication of a part or an organ during prenatal development is referred to as the

52. Which primordial structure differentiates into the ameloblasts that produce enamel?

53. Which stage of tooth development occurs between the 11th and 12th weeks of prenatal development?

54. Which of the following cells is/are DIRECTLY responsible for immunoglobulin production?

55. Incremental lines that stain brown in preparations of mature enamel are

56. Which period of prenatal development occurs during months 3 to 9?

57. From the following list, select the structures of the embryo that begin development in week 4 of prenatal development.

58. Each cell facilitates the exfoliation of a primary tooth EXCEPT one. Which one is the EXCEPTION?

59. The cervical loop is responsible for development of

60. Down syndrome is a developmental disturbance that occurs during which period of prenatal development?

61. The incomplete developmental division of a tooth germ is called FUSION. Fusion takes place during the initiation stage of tooth development.

62. Which is the most common cell found in the lamina propria of the oral mucosa?

63. The cells responsible for the development of the periodontal ligament come from the

64. The cusp of Carabelli is found on which permanent molars?

65. Eight bones compose the neurocranium, surrounding the brain. Fifteen bones compose the viscerocranium, or the bones of the face.

66. The sphenoid bone is composed of the

67. Anatomically, the inferior alveolar artery supplies which structure?

68. The functions of the lymphatic system include all EXCEPT one. Which one is the EXCEPTION?

69. For each division of the trigeminal nerve (V) listed, select its appropriate name from the list provided.

Trigeminal Nerve Division Name
____ 1. Division I A. Maxillary
____ 2. Division II B. Mandibular
____ 3. Division III C. Ophthalmic

70. The abducens (VI), trochlear (IV), and oculomotor (III) nerves all provide innervation to the muscles of the eye. These nerves provide sensory innervation.

71. Match each germ layer listed to the structure it forms in the developing embryo.

Germ Layer Structure Formed in Embryo
____ 1. Endoderm A. Gastrointestinal tract, epithelium, and associated glands
____ 2. Mesoderm B. Nervous system, epidermis, sensory epithelium of the eye, ear, and nose; tooth enamel; and oral epithelium
____ 3. Ectoderm C. Muscles, bone, cartilage, blood, dentin, pulp, cementum, and periodontal ligament

72. For each of the developing branchial arches listed, select the most appropriate anatomic structure that it gives rise to.

Developing Branchial Arch Resulting Structure
____ 1. Mandibular arch (branchial I) A. Muscles of facial expression, cranial nerve VII
____ 2. Hyoid arch (branchial II) B. Tongue, cranial nerve IX
____ 3. Branchial arch III C. Muscles of throat, inferior hyoid cartilage, cranial nerve X
____ 4. Branchial arch IV D. Mandible, muscles of mastication, cranial nerve V

73. Match each cell type to the structure it forms.

Cell Type Resulting Structure
____ 1. Ameloblasts A. Cementum
____ 2. Cementoblasts B. Dentin
____ 3. Odontoblasts C. Alveolar bone
____ 4. Dental follicle D. Enamel

74. The temporomandibular joint (TMJ) is capable of which two types of movement?

75. Which arteries are the terminal branches of the external carotid artery?

76. A hematoma that results from the administration of a posterior superior alveolar (PSA) nerve block is caused by bleeding from which arteries or veins?

1. Posterior superior alveolar artery

2. Pterygoid plexus of veins

3. Temporal artery

4. Facial artery

5. Maxillary vein

6. Posterior retromandibular vein

77. How many teeth are present in an individual with a full deciduous dentition?

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Jan 1, 2015 | Posted by in Dental Hygiene | Comments Off on 1: Anatomic Sciences
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