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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. Vermilion Border
Palatoglossus - palatopharyngeal
12 years
Portion of the lips where the skin meets the vermilion zone
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

2. Function of Palatoglossus
The area on the crown of the tooth that is nearest the gingival
A line of demarcation between the attached gingiva and alveolar mucosa
Orbicularis oris - buccinator - mentalis - zygomatic major
Elevates the posterior portion of the tongue and narrows the fauces

3. What are the 4 taste senses and where are they located?
6 years old
Used to pulverize food
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Quarters of the teeth

4. Interdental Ligament Group
Resist rotational forces and hold teeth in inter-proximal contact
The first predentin that is formed and matures within the tube
Used to pulverize food
Bone that surrounds the root of the tooth

5. What are the 3 branches of the pterygopalatine nerve branch?
Small dark brushes
Buccal - lingual - and inferior alveolar
Platysma - trapezius - sternocleidomastoid
Greater - lesser - naso palatine nerves

6. Apical Fiber Group
Allow flexibility during mastication - speech
Curve outward
Two weeks thru 8th week
Resists forces that try to pull the tooth outward

7. Perikymata
Middle two teeth in the mouth
Small grooves noted on some teeth
Forms the remaining 2/3 of the hard and soft palate uvula
Band of fibrous tissue which attaches bone to bone

8. Linea Alba
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Raised vertical folds of tissue on the lateral border of the tongue
Ligaments and muscles of mastication

9. Lingual Vein
Drains the floor of the mouth
Forms the bulk of the tooth
Duct located on the parotid papilla
10 days

10. Inferior Alveolar Artery
Growth from the oral epithelium that gives rise to the tooth buds
The teeth located at the back of the mouth
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Occurs in unusual ways and distorted crowns may appear

11. Cervical line
Forms the bulk of the tooth
Divides the crown and the root
Arteries supplying blood to most of the head and the neck
Follows the inside of the ramus and the body of the mandible

12. How many cusps/ roots do the 2/3rd maxillary molars have?
Retracts the tongue and raises the tip of the tongue
Three cusps/ trifurcated
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Triferacated

13. Uvula
A projection that extends off the back of the soft palate
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Function to resist rotational forces and tilting
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

14. Ectoderm
The ridges that run horizontally across the hard palate behind the incisive papilla
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Drains the superficial veins of the face and neck into the subclavian vein
Portion of the lips where the skin meets the vermilion zone

15. Maxillary Sinus
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
The internal surface at the center of the mandible
A shallow v-shaped depression located below the bottom of the nose and above the lips
Forms a large cavity above the roots of the maxillary molars

16. Midline
Formed by the fibroblast cells and secures the tooth in the socket
Middle line of the teeth
Separates the developing oral cavities from the nasal cavities
Circle and tighten the gingival margin around the neck of the tooth

17. Pulpitis
A junction or center of veins that directly or indirectly drain a vast area
When the tissue becomes inflamed
Mildest form of cleft palate
Initiation of the tooth begins

18. Incisive Arteries
Supplies blood to the roots and periodontal ligaments of the interior teeth
Retracts the tongue and raises the tip of the tongue
Portion of the lips that are red
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

19. Cyto differentiation
Week 12
Inside of the maxillary teeth
The teeth located at the back of the mouth
The development of different cells

20. Fibroblasts
12 years
Pointed or rounded mounds on the crown of the tooth
Cells From which connective tissue evolve
Outside surface Which is towards the lips

21. Enamel Dysplasia
Found only in multi-rooted teeth and resists rotational forces
Portion of the lips where the skin meets the vermilion zone
When the surface of the teeth becomes grooved
Appears to be loosely attached - covering the alveolar bone.

22. Pterygoid Artery
Curve outward
Wings of the sphenoid bone
When cells rapidly increase in number
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

23. External Jugular Vein
Drains the superficial veins of the face and neck into the subclavian vein
Resists forces that try to pull the tooth outward
Outside surface Which is towards the cheek - on posterior teeth
Occlusal surface of the posterior tooth

24. Calcification
Substances between cells
Layers of tooth tissue become calcified
The inner surface of the lips
Cells From which connective tissue evolve

25. Gingival Groove
Narrow long enamel tuft
The disc becomes displaced
Tubules that pass through the entire surface of the dentin
The line of demarcation between the attached gingiva and the marginal gingiva

26. Gingiva
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
A dense tissue covered with mucous membrane that can withstand chewing
Assist in the movement and functioning of the tongue
No bicuspids/ no 3rd molars

27. Function of Trapezius
Synovial fluid
Chewing and swallowing food
Shaping the tongue during speech - mastication and swallowing
Moves the head backward and laterally

28. Furcation
Dividing point of a multi-rooted tooth
Calcium salts are deposited into formed tooth
Shed from the oral cavity
Formed by the fibroblast cells and secures the tooth in the socket

29. Cervical Third
Biting edge of the teeth
Quarters of the teeth
The area on the crown of the tooth that is nearest the gingival
Orbicularis oris - buccinator - mentalis - zygomatic major

30. Lamina Propria
Second teeth next to central incisors
Two
The connective tissue of the marginal gingiva
Peg shaped crown with a smooth surface

31. Triangular Ridge
10 days
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Formed by the fibroblast cells and secures the tooth in the socket
Tooth emerges from gum tissue and becomes visible

32. Sphenoid
A bat shaped bone which forms the anterior portion of the skull
A shallow v-shaped depression located below the bottom of the nose and above the lips
Assist in depressing the mandible and elevating the tongue
Greater - lesser - naso palatine nerves

33. Cementoblast
Cells that form cementum
Upper arch of the teeth
Maxillary third molar
A bat shaped bone which forms the anterior portion of the skull

34. Buccal
Outside surface Which is towards the cheek - on posterior teeth
Forms into the inner lining of the oral cavitiy and enamel of the teeth
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
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone

35. What is the smallest tooth in dentition?
Occurs in unusual ways and distorted crowns may appear
Mandibular central incisors
Small raised projections where taste buds are located
Peg shaped crown with a smooth surface

36. Cleft Uvula
Inside of the maxillary teeth
Formed by the uniting of lobes during development of crown
32
Mildest form of cleft palate

37. Genial Tubercles
Incremental line indicating trauma of birth
Stained growth rings in dentin
Small bony projections surrounding the lingual foramen
Outside surface Which is towards the lips

38. How many teeth are in the permanent set of teeth?
32
9 weeks thru birth
4 cusps/ bifurcated
Origin - fixed point - insertion - movable point

39. How many cusps/ roots do the 2/3rd mandibular molars have?
Functions the same as the alveolar cfg; originate in alveolar bone
Calcified masses of dentin
4 cusps/ bifurcated
Portion of the lips where the skin meets the vermilion zone

40. Labial-Mental Groove
Demonstrates a disturbance in the body metabolism
The groove below the lower lips that separates the lips from the chin
Resulting from an imperfect union where the lobes come together
Lining covers inside of the oral cavity

41. Maxillary Tuberosity
A bony plate covered with keratinized tissue located in the anterior portion of the palate
A rounded area beyond the last posterior maxillary tooth
Extends from the medial corner of the eye to the nasal cavity
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

42. Which molar is the wisdom tooth
Maxillary third molar
To dissolve
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Portion of the lips that are red

43. Anterior Tonsillar Pillar
Week 12
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
Study of the structure and form of the teeth
Folds of tissue that extend horizontally from the uvula to the base of the tongue

44. Eruption
Supplies blood to the brain and the eyes
Tooth emerges from gum tissue and becomes visible
Drains the maxiallary artery and superficial temporal arteries
No bicuspids/ no 3rd molars

45. lst and second premolars
A bony projection that separates each socket
Teeth after cuspids
Cheek bones--the most breakable bone in the body
Assist in the movement and functioning of the tongue

46. What is the longest tooth in the mandibular arch?
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
The mandibular first premolar
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Intervating the anterior teeth and the labial gingiva

47. Xygomatic bones
Cheek bones--the most breakable bone in the body
Papillae that give the tongue the strawberry effect
Constricts the nasopharyngeal passage and elevates the larynx
Supplies blood to the roots and periodontal ligaments of the molars and premolars

48. Hypercementosis
What divides the tongue in half and runs from the base to the tip of the tongue
Causes a thickening of the cementum around the apex
Three bulges on the incisal edge
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

49. What is the maxillary cuspid known as?
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Slight ridges on the cervical third of certain teeth that extend mesiodistally
The cornerstone of the mouth
6 years old

50. Function of Digastric
Lift the hyoid bone and assist in opening the mouth
Dentin found between the tubules
Narrow long enamel tuft
Compact bone plate of the facial and lingual surfaces

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Dental Assisting: Head And Neck Anatomy

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