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Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Cusp of Caribelli
Enamel is thinner - pulp chamber is smaller -
Small linear depression
The cornerstone of the mouth
Fifth cusp located on the mesial surface lingual surface of maxillary first molars

2. What are the 4 muscles of the floor of the mouth?
12 years
Week 12
The outer edge of the nostril
Digstric - Mylohyoid - stylohyoid - geniohyoid

3. Evanesce
Demonstrates a disturbance in the body metabolism
Forms the bulk of the tooth
To dissolve
Enamel is thinner - pulp chamber is smaller -

4. Dentoperiosteal Fiber Groups
Looking at the border of the tongue
No bicuspids/ no 3rd molars
Mastication - aids in speech - influence facial structure - chewing surfaces
Supportive fibers that anchor the tooth to the bone

5. Lingual Frenum
A line of tissue that extends from the tongue to the floor of the mouth
Intervating the anterior teeth and the labial gingiva
Occurs in unusual ways and distorted crowns may appear
6 months/3years

6. Internal Jugular Vein
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Mildest form of cleft palate
Inside surface Which is towards the tongue - on anterior teeth
Follows the inside of the ramus and the body of the mandible

7. Mastoid process
Indented
The moveable attachment of the muscle
Bony projection found on the bottom border of the temporal bone
Formed by the fibroblast cells and secures the tooth in the socket

8. Secondary Dentin
Forms after the completion of the apical foramen
Curve outward
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Natural teeth in position

9. Posterior Superior Alveolar Nerve
Intervates the floor of the mouth the ventral side of the tongue taste buds on the anterior two thirds of the tongue and the lingual gingiva
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Covering over the enamel that is left over from the epithelium ameloblasts
4th week

10. Buccal Mucosa
Surface towards the midline
9 weeks thru birth
The inner surface of the cheeks
Allow flexibility during mastication - speech

11. Endoderm
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Supplies blood to the face and oral cavity
Shaping the tongue during speech - mastication and swallowing
Respiratory system - digestive system and glandular organs

12. Oblique Fiber Group
An enclosed area that matures into dentin - cementum and pulp
Resists intrusive forces that try to push the tooth inwards
Incremental lines around the layers of the enamel matrix
Drains the superficial veins of the face and neck into the subclavian vein

13. Anterior Alveolar Nerve
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Wings of the sphenoid bone
Small raised projections where taste buds are located
Lift the hyoid bone and assist in opening the mouth

14. Cingulum
Intervates the floor of the mouth the ventral side of the tongue taste buds on the anterior two thirds of the tongue and the lingual gingiva
Excess bone formations under the tongue on the alvellar bone
Convex area on the lingual surface near gingiva
Growth from the oral epithelium that gives rise to the tooth buds

15. Lines of Retzius
Wings of the sphenoid bone
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Two vertical extensions of the mandible
Incremental lines around the layers of the enamel matrix

16. Alveolar Mucosa
6 years old
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Mucosa that covers the alveolar bone
Incremental line indicating trauma of birth

17. Salivary Glands
Secrete saliva to assist in process of digestion
The slightly raised line extending down the middle of the hard palate
The disc becomes displaced
Separates the developing oral cavities from the nasal cavities

18. Imbrication lines
Contains six branches that supply blood to the pharynx muscles - soft palate tonsils - the posterior of the tongue - sub mandibular gland - muscles of the face - nasal septom - nose and the eyelids
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Canal or passage for fluid
Mildest form of cleft palate

19. Odontal Fiber Groups
To bulge of curve outward
Calcified masses of dentin
Allow flexibility during mastication - speech
Tubules that pass through the entire surface of the dentin

20. Interdental Gingiva
An extension of an unattached gingiva and the tooth
Outside surface Which is towards the cheek - on posterior teeth
Interdental ligament
An overgrowth of the gingival tissue

21. What are the 12 landmarks of the oral cavity?

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22. Lesser Palatine Nerve
Buccal - lingual - and inferior alveolar
Pulls the hyoid bone and the tongue anteriorly
Smaller branch that ennervates the soft palate uvula and tonsils
Middle line of the teeth

23. Styloid Process
Sharp projection on the under surface of the temporal bone
A junction or center of veins that directly or indirectly drain a vast area
Follows the inside of the ramus and the body of the mandible
Indented

24. Interradical Fiber Group
Middle two teeth in the mouth
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Found only in multi-rooted teeth and resists rotational forces
Upper arch of the teeth

25. External Oblique Ridge
Resulting from an imperfect union where the lobes come together
Lining covers inside of the oral cavity
Follows the length of the body of the mandible past the last tooth and up to the ramus
Permeante teeth replace the primary teeth

26. Rod Core
Elevated are of enamel that forms the Mesial and distal borders
Inner portion of the enamel rod
Causes a thickening of the cementum around the apex
The space between the unattached gingiva and the tooth

27. What is another name for premolars?
A horseshoe shaped bone lying at the base of the tongue--all the muscles of the tongue and the floor of the mouth attach to this bone
Lower arch of the teeth
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Bi-cuspids

28. Xygote
The slightly raised line extending down the middle of the hard palate
When cells rapidly increase in number
Quarters of the teeth
The first predentin that is formed and matures within the tube

29. How many cusps/ roots do the 2/3rd mandibular molars have?
4 cusps/ bifurcated
Pointed or rounded mounds on the crown of the tooth
Located behind the ramus of the mandible and branches into five arteries
The inner surface of the lips

30. Labial Commissures
Oval structures that are located on the dorsal surface of the tongue
Corners of the mouth
1500 millimeters
The outer edge of the nostril

31. Morphology
Folds of tissue to the the lingual veins
A horseshoe shaped bone lying at the base of the tongue--all the muscles of the tongue and the floor of the mouth attach to this bone
Dividing point of a multi-rooted tooth
Study of the structure and form of the teeth

32. What are the intrinsical muscles of the tongue responsible for?
Assist in the movement and functioning of the tongue
The cornerstone of the mouth
Shaping the tongue during speech - mastication and swallowing
Compact bone plate of the facial and lingual surfaces

33. Osteoclasts
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Located on the inside of the body of the ramus
The teeth located at the back of the mouth
When the dentin is exposed

34. Gingival Hyperplasia
The smallest of the salivary glands located on the floor of the mouth which empty into the mouth thru either the ducts of Rivinus or Bartholin
An overgrowth of the gingival tissue
When the tissue becomes inflamed
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

35. Function of mylohyoid
Assist in depressing the mandible and elevating the tongue
An overgrowth of the gingival tissue
Moves the head backward and laterally
Bone that surrounds the root of the tooth

36. How many teeth are in the Primary teeth?
A horseshoe shaped groove that follow the curve of the dental arch
Mildest form of cleft palate
20
The area on the crown of the tooth that is nearest the gingival

37. Symphysis
Growth from the oral epithelium that gives rise to the tooth buds
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Of or pertaining to area surrounding naval cavity
Act to maintain the gingival integrity of the marginal gingiva

38. Cleft Lip
A flap of tissue on the on the buccal mucosa
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Separation of the upper lip ( 1 of 1000 live births)
Forms the remaining 2/3 of the hard and soft palate uvula

39. Mental Protuberance
The slightly raised line extending down the middle of the hard palate
The tip of the chin
Small linear depression
Intervates the floor of the mouth the ventral side of the tongue taste buds on the anterior two thirds of the tongue and the lingual gingiva

40. Ridge
Extreme variations from the norm
Found near the cementoenamel junction
A horseshoe shaped groove that follow the curve of the dental arch
Linear elevation of the tooth

41. Sulingual Folds
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Sharp projection on the under surface of the temporal bone
Where the ramus meets the body of the mandible on the outside border
Triferacated

42. Mental Artery
Respiratory system - digestive system and glandular organs
2 small raised folds of tissue where the lingual frenum attaches
Linear elevation of the tooth
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip

43. Labial Commissures
The corners of the mouth where the top and bottom lip meet
Largest facial bone with two sections joined at the median suture
Bifurcated/ 5 cusps
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

44. Gingival Groove
Bicuspids
Follows the length of the body of the mandible past the last tooth and up to the ramus
Located behind the ramus of the mandible and branches into five arteries
The line of demarcation between the attached gingiva and the marginal gingiva

45. Hypercementosis
Forms into dentin - cementum and pulp of the teeth
An enclosed area that matures into dentin - cementum and pulp
Lining covers inside of the oral cavity
Causes a thickening of the cementum around the apex

46. Caruncle
Tissue fluid surrounding the cell membrane of the odontoblast
Place where the groove comes together or fissures cross
Triferacated
Fleshy elevation under the tongue

47. What are the largest and strongest of the mandibular teeth
The mandibular molars
The gingiva in the floor of the gingival sulcus that attaches to the enamel
To bulge of curve outward
The crown of the tooth that is nearest the incisal edge near the anterior tooth

48. Lamina Propria
Supplies blood to the face and oral cavity
Growth from the oral epithelium that gives rise to the tooth buds
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
The connective tissue of the marginal gingiva

49. Gingiva
Week 12
Assist in depressing the mandible and elevating the tongue
A dense tissue covered with mucous membrane that can withstand chewing
Two

50. Labial Mucosa
The outer edge of the nostril
The development of different cells
Inside of the maxillary teeth
The inner surface of the lips