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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. Odontal Fiber Groups
6 years old
Extreme variations from the norm
Bifurcated/ 5 cusps
Allow flexibility during mastication - speech

2. Sulingual Folds
2 to 3 pints
Palatoglossus - palatopharyngeal
Largest division of the trigeminal nerve
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

3. Fetus
9 weeks thru birth
Second teeth next to central incisors
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
The teeth located at the back of the mouth

4. Function of Palatopharyngeal
Curve outward
Cells From which connective tissue evolve
The deepest point of the vestibule
Constricts the nasopharyngeal passage and elevates the larynx

5. Pulp horns
Biting edge of the teeth
Two weeks thru 8th week
The moveable attachment of the muscle
Pointed elongations of the pulp

6. Ectoderm
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
A bony projection that separates each socket
Excess dryness of the mouth
Forms into the inner lining of the oral cavitiy and enamel of the teeth

7. Mesial
Compact bone plate of the facial and lingual surfaces
Vertical groove on the midline of the upper lip
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Surface towards the midline

8. What is saliva made of?
Found near the cementoenamel junction
H20 - mucin - organic salts and digestive enzymes
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Incremental lines around the layers of the enamel matrix

9. Vermilion Border
Portion of the lips where the skin meets the vermilion zone
Synovial fluid
Palatoglossus - palatopharyngeal
Wings of the sphenoid bone

10. Fordyce's Spots
Small yellowish glands on the labial mucosa
Week 12
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Small curved lines that run parellel to the CEJ

11. What is the most common problem with TMJ
The corners of the mouth where the top and bottom lip meet
Separation of the upper lip ( 1 of 1000 live births)
The disc becomes displaced
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

12. Mesoderm
Vertical groove on the midline of the upper lip
Located behind the ramus of the mandible and branches into five arteries
Wearing away of the incisal or occlusal surfaces of the tooth
Forms into dentin - cementum and pulp of the teeth

13. What is the maxillary cuspid known as?
To dissolve
Two cortical bone plates that come together between each tooth
The cornerstone of the mouth
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

14. Submandibular Glands

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15. When does the maxillary second molar erupt?
The connective tissue of the marginal gingiva
Forming organ takes shape and resembles the shape of a bell
12 years
Retracts the tongue and raises the tip of the tongue

16. Cervical line
Surface towards the midline
Two vertical extensions of the mandible
Divides the crown and the root
Maxillary first molar

17. Fissure
Resulting from an imperfect union where the lobes come together
The slightly raised line extending down the middle of the hard palate
Resists forces that try to pull the tooth outward
Aid in attaching the gingiva to the alveolar bone

18. Lesser Palatine Nerve
Smaller branch that ennervates the soft palate uvula and tonsils
Narrow long enamel tuft
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

19. How can you tell if someone has cancer by looking at the tongue?
Draws down the mandible and corners of the mouth
Small curved lines that run parellel to the CEJ
Intervating the anterior teeth and the labial gingiva
Looking at the border of the tongue

20. Function of Platysma
The development of different tissues
Occlusal surface of the posterior tooth
Draws down the mandible and corners of the mouth
Constricts the nasopharyngeal passage and elevates the larynx

21. Lesser Palatine Foramen
When the surface of the teeth becomes grooved
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
The tip of the chin
Three bulges on the incisal edge

22. What are the four major muscles of facial expression
Study of the structure and form of the teeth
Assists in elevating the chin
Orbicularis oris - buccinator - mentalis - zygomatic major
Growth from the oral epithelium that gives rise to the tooth buds

23. Hypercementosis
Where the proximal sides of two teeth come together and touch
Oval depression of temporal bone in condyloid process
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Causes a thickening of the cementum around the apex

24. Peritubular Dentin
Band of fibrous tissue which attaches bone to bone
Creates the wall of the dentinal tubule
Trigeminal nerve--because it ennervates the maxilla and the mandible
Shaping the tongue during speech - mastication and swallowing

25. Function of Digastric
Calcium salts are deposited into formed tooth
Assists in elevating the chin
Molaris meaning millstone
Lift the hyoid bone and assist in opening the mouth

26. Histo Differentiation
Inside surface Which is towards the tongue - on anterior teeth
A projection that extends off the back of the soft palate
Cells develop into different tissues
Excess bone in the middle of the palate

27. Linea Alba
6 years old
Trigeminal nerve--because it ennervates the maxilla and the mandible
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
The layer of dentin that surrounds the pulp

28. Torus Mandibularis
Excess bone formations under the tongue on the alvellar bone
Bi-cuspids
Tubules that pass through the entire surface of the dentin
Bone that surrounds the root of the tooth

29. Mamelons
Extends from the medial corner of the eye to the nasal cavity
Sharp projection on the under surface of the temporal bone
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Three bulges on the incisal edge

30. Ligament
Peg shaped crown with a smooth surface
Band of fibrous tissue which attaches bone to bone
A horseshoe shaped groove that follow the curve of the dental arch
Composed of mucosa and surrounds the necks of the teeth

31. Function of Stylohyoid
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Rounded depression on a tooth
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Folds of tissue that extend horizontally from the uvula to the base of the tongue

32. What is the purpose of permanent teeth?
Separation of the upper lip ( 1 of 1000 live births)
Cut - tear - and grind food
Stained growth rings in dentin
Occurs in unusual ways and distorted crowns may appear

33. Endoderm
Respiratory system - digestive system and glandular organs
1500 millimeters
Small grooves noted on some teeth
To dissolve

34. Hyoid Bone
The bone that separates the root on a tooth
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
The tip of the chin
Shaping the tongue during speech - mastication and swallowing

35. Alveolar Mucosa
Appears to be loosely attached - covering the alveolar bone.
Joined at the midline and are often referred to as the median Palatine suture
Band of fibrous tissue which attaches bone to bone
Occlusal surface of the posterior tooth

36. Sublingual Caruncles
Small curved lines that run parellel to the CEJ
Interdental ligament
Two
2 small raised folds of tissue where the lingual frenum attaches

37. Interdental Septum
A bony projection that separates each socket
Week 11
Developmental segment of a tooth
Where the ramus meets the body of the mandible on the outside border

38. Enamel Tufts
Small dark brushes
Genioglossus - hyoglossus - styloglossus - palatoglossus
A faint line going from the ala of the nose to the corner of the mouth
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

39. Dental Arteries
An enclosed area that matures into dentin - cementum and pulp
Cluster of tissue that manufactures and secrets fluid
Smaller branch that ennervates the soft palate uvula and tonsils
Supplies blood to the roots and periodontal ligaments of the molars and premolars

40. Function of Sternocleidomastoid
Hinge motion and gliding movement
To lubricate the oral cavity and to moisten food
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
Assists in elevating the chin

41. When does the maxillary first molar erupt?
H20 - mucin - organic salts and digestive enzymes
Maxillary first molar
6 years old
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

42. Mastoid process
2 to 3 pints
Third tooth from the midline
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Bony projection found on the bottom border of the temporal bone

43. Ala of the Nose
The outer edge of the nostril
Healthy gingival tissue with an orange texture
Incremental lines around the layers of the enamel matrix
An extension of an unattached gingiva and the tooth

44. Cusps
Pointed or rounded mounds on the crown of the tooth
Bluish veins that run the length of the tongue
The development of different forms
Mildest form of cleft palate

45. Convex
Creates the wall of the dentinal tubule
Lining covers inside of the oral cavity
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
To bulge of curve outward

46. Nasmyths Membrane
Drains the Pterygoid plexus of the veins
Covering over the enamel that is left over from the epithelium ameloblasts
Located in a depressed area between the pillars
Looking at the border of the tongue

47. Primary Dentin
Forms the bulk of the tooth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Pulverizing or chewing surface
Small yellowish glands on the labial mucosa

48. Uvula
Pulverizing or chewing surface
A projection that extends off the back of the soft palate
An enclosed area that matures into dentin - cementum and pulp
Sharp projection on the under surface of the temporal bone

49. Secondary Dentin
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Forms after the completion of the apical foramen
Small dark brushes
Responsible for laying down the enamel matrix into place

50. Posterior Teeth
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Found near the cementoenamel junction
Where the ectoderm layer matures into the enamel
The teeth located at the back of the mouth