Exercises Lesson

INSTRUCTIONS: Answer the following exercises by marking the lettered response that best answers the question or best completes the incomplete statement or by writing the answer in the space provided.

After you have completed all the exercises, turn to "Solutions to Exercises" at the end of the lesson and check your answers. For each exercise answered incorrectly, reread the material referenced after the answer.

SPECIAL INSTRUCTIONS FOR EXERCISES 1 THROUGH 6. Match each bone of the cranium in Column A to its description in Column B. Mark your answers in the space provided.

Column A

Column B

1. Frontal.

a. Forms a large part of the cranial vault. The joining of these bones forms the sagittal suture.

b. Contains the organs of hearing and equilibrium. The external acoustic meatus is in the side of each bone.

3. Sphenoid.

c. Makes up the front part of the base of skull, between the eyes, and makes up part of the nose. Transmits the olfactory nerve.

4. Ethmoid.

d. Makes up the central part of the cranium base. Forms part of the eye sockets and the back part of the upper jaw. It transmits the optic nerve and has a bony socket that holds the pituitary gland.

5. Parietal.

e. Makes up the back part of the cranial vault and the back part of the floor of the cranial vault. It supports the head on the spinal column

f. Forms the forehead, the roof of the eye sockets, and the front part of the cranial vault.

7. When a patient is seated in the dental chair, the headrest should support the:

a. Ethmoid bone.

b. Temporal bones.

c. Occipital bone.

d. Parietal bones.

8. An opening in a bone which serves as a passageway for nerves and blood vessels is a:

a. Foramen.

c. Process.

e. Meatus.

9. A hollow or depression in a bone is a(n):

a. Foramen.

b. Suture.

d. Meatus.

10. An extension or projection from a bone is a:

b. Suture.

c. Condyle.

d. Process.

e. Septum.

11. There are_bones in the face.

12. According to the lesson, which one of the following bones is NOT a facial bone?

a. Palatine.

b. Lacrimal.

d. Inferior nasal conchae.

e. Ethmoid.

13. Which one of the following bones joins the maxilla at the anterior edge?

a. Zygomatic.

c. Inferior nasal conchae.

d. Palatine.

14. According to the lesson, which one of the following is more often involved in facial fractures?

b. Mastoid process.

c. Zygomatic process.

d. Temporomandibular joint.

15. The external acoustic meatus is found in the:

a. Ethmoid bone.

b. Sphenoid bone.

c. Zygomatic process.

d. Temporal bone.

e. Mastoid process.

SPECIAL INSTRUCTIONS FOR EXERCISES 16 THROUGH 18. Match each structure of the temporal bone in Column A to its description in Column B. Mark your answers in the space provided.

Column A

Column B

16. Zygomatic process

17. Temporomandibular joint.

a. A knob of bone jutting down behind the ear, which serves as an attachment for several muscles which move the head.

b. This extension forms a part of the cheekbone.

18. Mastoid process c. Where the glenoid fossa and the condyle of the mandible come together.

19. List the 14 bones of the face.

20. Complete the following statements related to the face.

a. The_are the bony parts of the face that hold the teeth and form the framework of the mouth.

b. Essential activities associated with the face are:

c. The_is the upper jaw.

d. The_is the lower jaw.

SPECIAL INSTRUCTIONS FOR EXERCISES 21 THROUGH 24. Match each structure of the upper jaw in Column A to its description in Column B. Mark your answers in the space provided.

Column A Column B

_21. Nasal process. a. Forms the eminence of the cheek under the eye.

, 22. Malar process. b. Gives shape to the nose by forming part of the lateral wall.

, 23. Maxillary alveolar c. Forms much of the roof of the mouth and the process. floor of the nasal cavity.

_ 24. Palatal process. d. Forms a horizontal, horse-shoe shaped ridge, with the opening toward the throat.

25. Located within the body of each maxillary bone is a large cavity called the:

a. Maxillary tuberosity.

b. Hamular notch.

c. Antrum of Highmore.

d. Cavernous sinus.

26. The incisive foramen is found in the_, just behind the two central incisors.

a. Maxillary alveolar process.

b. Malar process.

c. Maxillary sinus.

d. Nasal process.

e. Palatal process.

27. Complete the following statements related to the alveolar process.

a. The function of the alveolar process is to hold and support_.

b. Teeth are embedded in deep depressions or bony sockets called_

c. Each_conforms closely to the shape of the root of the tooth it contains.

28. The roots of the teeth are supported within the tooth sockets by connective tissue called the__or the

29. The largest bone in the face is the:

a. Mandible.

b. Maxilla.

d. Zygomatic.

30. Which one of the following is NOT part of the ramus of the mandible?

a. Coronoid process.

b. Condyloid process.

c. Sigmoid notch.

d. Mandibular foramina.

e. Mental foramen.

31. The bony chin, unique to humans, is formed by the:

a. Malar process.

b. Condyloid process.

c. Mandibular alveolar process.

d. Mental process.

e. Coronoid process.

32. The angle of the jaw below the ear is formed by the base of the:

a. Coronoid process.

b. Mental process.

33. Select the structure that is important during the administration of a local anesthetic to the mandibular nerve.

a. Mental foramina.

b. Mandibular foramina.

c. Foramina of stensen.

d. Incisive foramen.

e. Greater palatal foramen.

SPECIAL INSTRUCTIONS FOR EXERCISES 34 THROUGH 38. Match each muscle of mastication in Column A to its description in Column B. Mark your answers in the space provided.

, 36. Medial pterygoid.

, 37. Lateral pterygoid. 38. Buccinator.

Column B

a. Closes the jaws and pulls the mandible backward.

b. Opens the mouth, producing forward and sideward movements.

c. Close the jaws, exerting pressure in the molar region.

d. Elevates the mandible against the maxilla.

e. Positions food between the teeth by compressing the cheek.

39. List the smaller muscles that assist in opening the mouth.

40. As depicted in figure 2-9, the muscle of mastication that is fan-shaped is the:

a. Masseter.

b. Lateral pterygoid.

c. Buccinator.

d. Medial pterygoid.

e. Temporalis.

41. As depicted in figure 2-8, the muscles that assist the lateral pterygoid in opening the jaw are attached to the_part of the mandible.

a. Anterior.

b. Posterior.

c. Medial.

42. The most common fracture of the jaw (mandible) is at or just behind the:

a. Point of attachment of the geniohyoid muscle.

b. Mandibular foramen.

c. Point of attachment of the mylohyoid muscle.

d. Mental foramen.

e. Neck of the condyle.

43. List the two bones that form the temporomandibular joint.

a. The_of the mandible.

b. The_of the temporal bone.

44. Complete the following statements related to the articular disk.

a. The articular disk is a_,_,_, plate made of fibrous tissue.

b. It is located between the mandibular_and the_

of the mandible.

c. The synovial membrane secretes_fluid to_

the joint.

d. In front, the articular disk is attached to the_muscle.

45. What limits the extreme movement of the mandible?

a. Synovial membrane.

b. Ligaments.

c. Buccinator muscle.

d. Articular disc.

e. Lateral pterygoid muscle.

46. The synovial cavity is most closely related to the:

a. Muscles of mastication.

b. Maxillary alveoli.

c. Temporomandibular joint.

d. Mandibular ramus.

e. Nerve and blood supply of the jaws and teeth.

47. Articulators are metal instruments used in the maki g of dentures.

a. _articulators are designed to reproduce the jaw movements for the average individual.

b. When more precise reproduction of jaw movement is required,_

articulators are available.

48. Complete the following statements related to the cranial nerves.

a. There are_pairs of cranial nerves.

b. The largest of the pairs is the_cranial nerve.

c. It is also called the_nerve. It provides nerve supply to the jaws and to the teeth.

d. The motor root supplies motor impulses to the muscles of_.

e. The sensory root supplies sensory impulses from the structures of the and the .

49. For each structure in Column A, identify the appropriate major division of the trigeminal nerve that serves the structure Column B. Items in column B may be used more than once. Mark your answers in the space provided.

Column A. Column B

_ (1) Mucous lining of the nose. a. Ophthalmic nerve.

_ (2) Soft tissues of the floor of the mouth b. Maxillary nerve.

_ (5) Maxillary incisors and cuspids.

_ (7) Maxillary bicuspids.

_(8) Gingiva, mucous membrane of the hard palate.

_ (9) Inferior alveolar nerve.

_ (10) Eyelids and eyebrows.

_ (11) Anterior superior alveolar nerve.

_(13) Uvula, tonsils, soft palate.

50. For each passageway in Column A, identify the appropriate major division of the trigeminal nerve in Column B that the passageway serves. Items in column B may be used more than once. Mark your answers in the space provided.

Column A

Column B

(1)

Floor of orbit of the eye.

a.

Division I.

Ophthalmic nerve)

(2)

Mental foramen.

b.

Division II

. (Maxillary nerve)

(3)

Greater palatine foramen.

c.

Division II

I. (Mandibular nerve)

(4)

Lesser palatine foramina.

(5)

Mandibular foramen.

(6)

Incisive canal.

51. As depicted in figure 2-14, which of the following arteries supplies blood to the jaws, the teeth, and their supporting structures?

a. Internal carotid.

b. External carotid.

c. Maxillary artery.

d. Lingual carotid.

e. Descending palatine artery.

52. Select the structure that is NOT supplied with blood by the external carotid artery.

a. Teeth and their supporting tissues.

b. Tongue.

c. Soft tissues of the side of the face.

d. Bones of the mandible.

53. According to the lesson, the dura mater has a channel within its two layers for the:

a. Synovial membrane.

b. Trigeminal nerve.

c. Cavernous sinus.

d. Venous blood from the brain.

e. External carotid arteries.

54. As depicted in figure 2-16, which one of the following veins is joined directly with the covering of the brain?

a. Infraorbital vein.

b. Anterior facial vein.

c. Posterior superior alveolar vein.

d. Angular vein.

e. Internal jugular vein.

55. Any infection in the maxillary anterior teeth is serious because the infection can travel into the:

a. Cavernous sinus.

b. Nasal sinus.

c. Maxillary sinus.

d. Sphenoid sinus.

e. Rontal sinus.

56. List two principal uses of the tongue.

and food.

57. The taste buds are most closely related to the:

a. Salivary glands.

b. Alveolar ridge.

c. Soft tissues of the mouth.

d. Papilla on the tongue.

e. Trigeminal nerve.

SPECIAL INSTRUCTIONS FOR EXERCISES 58 THROUGH 60. Match each salivary gland in Column A to its description in Column B. Mark your answers in the space provided.

Column A

Column B

58. Parotid gland.

a. Just below the mucous membrane in the floor of the mouth, beneath the lateral aspects of the tongue.

59. Submandibular gland.

b. Located on each side of the face, just below and in front of the ear.

60. Sublingual gland.

c. Located in the floor of the mouth, just forward of the angle of the jaw.

61. Which one of the following is the largest of the salivary glands?

a. Parotid.

b. Submandibular.

c. Sublingual.

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