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Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

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Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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1. Dental Arteries
An overgrowth of the gingival tissue
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
4/5 cusps/ 3 roots

2. Tome's process
Excess dryness of the mouth
A projection that extends off the back of the soft palate
The cornerstone of the mouth
Responsible for laying down the enamel matrix into place

3. Vestibule
Covers muscle tissue in the posterior portion of the palate
The line of demarcation between the attached gingiva and the marginal gingiva
Forms the remaining 2/3 of the hard and soft palate uvula
A pocket formed by the soft tissue of cheeks and gingiva

4. Odontal Fiber Groups
Covering over the enamel that is left over from the epithelium ameloblasts
6 months/3years
Portion covered with cementum
Allow flexibility during mastication - speech

5. Parotid Papilla
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
A flap of tissue on the on the buccal mucosa
An overgrowth of the gingival tissue
Raised vertical folds of tissue on the lateral border of the tongue

6. Taste Buds
Oval structures that are located on the dorsal surface of the tongue
The moveable attachment of the muscle
Maxillary first molar
Outside surface Which is towards the cheek - on posterior teeth

7. Labial
Outside surface Which is towards the lips
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Bicuspids
The development of different tissues

8. Paranasal
To dissolve
Biting edge of the teeth
Of or pertaining to area surrounding naval cavity
Supplies blood to the face and oral cavity

9. Stensens' Duct (aka Parotid)

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10. Lacrimal Bones
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
When the dentin is exposed
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Occurs in unusual ways and distorted crowns may appear

11. When does the maxillary second molar erupt?
12 years
Primitive mouth
Study of the structure and form of the teeth
An overgrowth of the gingival tissue

12. Attached Gingiva
Follows the length of the body of the mandible past the last tooth and up to the ramus
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Extends from the mucogingival junction to the gingival groove
Forms the bulk of the tooth

13. What are the two ways the TMJs move?
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Bicuspids
Hinge motion and gliding movement
Permeante teeth replace the primary teeth

14. Labial-Mental Groove
Sharp projection on the under surface of the temporal bone
The development of different cells
The groove below the lower lips that separates the lips from the chin
Pointed or rounded mounds on the crown of the tooth

15. Stenson's Duct
Outside surface Which is towards the cheek - on posterior teeth
Duct located on the parotid papilla
Cut - tear - and grind food
Joined at the midline and are often referred to as the median Palatine suture

16. Mesenchyme Tissue
Sharp projection on the under surface of the temporal bone
Primary embryonic mesoderm layer that develops during the morpho differentiation period
4 cusps/ bifurcated
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

17. What are the four main functions of deciduous teeth?
Palatoglossus - palatopharyngeal
Mastication - aids in speech - influence facial structure - chewing surfaces
Inner portion of the enamel rod
A bat shaped bone which forms the anterior portion of the skull

18. Retromolar Area
Disk that acts like a cushion between the temporal bone and the condyloid process
9 months (5 months ultrasound to tell sex)
A triangular area located behind the last molar
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

19. Function of Geneoglossus?
Retracts or depresses the tongue
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Elevates the posterior portion of the tongue and narrows the fauces
Small linear depression

20. Nasmyths Membrane
The development of different forms
A rounded area beyond the last posterior maxillary tooth
Covering over the enamel that is left over from the epithelium ameloblasts
Origin of the tooth

21. Function of Sternocleidomastoid
Disk that acts like a cushion between the temporal bone and the condyloid process
The mandibular first premolar
Peg shaped crown with a smooth surface
Assists in elevating the chin

22. Dentoperiosteal Fiber Groups
Disk that acts like a cushion between the temporal bone and the condyloid process
Assist in depressing the mandible and elevating the tongue
Small raised projections where taste buds are located
Supportive fibers that anchor the tooth to the bone

23. Anatomical root
6 years old
Wearing away of the incisal or occlusal surfaces of the tooth
Follows the length of the body of the mandible past the last tooth and up to the ramus
Portion covered with cementum

24. Posterior Teeth
The teeth located at the back of the mouth
Scroll like bones outside the nasal cavaties
Forms after the completion of the apical foramen
Of or pertaining to area surrounding naval cavity

25. How many cusps/ roots do the maxillary first molars have?
The ridges that run horizontally across the hard palate behind the incisive papilla
Lining covers inside of the oral cavity
4/5 cusps/ 3 roots
Raised vertical folds of tissue on the lateral border of the tongue

26. Mesoderm
Pulverizing or chewing surface
The groove below the lower lips that separates the lips from the chin
Calcium salts are deposited into formed tooth
Forms into dentin - cementum and pulp of the teeth

27. Glenoid Fossa
The development of different cells
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
No bicuspids/ no 3rd molars

28. Function of Trapezius
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Mastication - aids in speech - influence facial structure - chewing surfaces
Moves the head backward and laterally
Portion of the lips that are red

29. Middle Superior Alveolar Nerve
Surface away from the midline
Hinge motion and gliding movement
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Vertical groove on the midline of the upper lip

30. Free Gingiva
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Three bulges on the incisal edge
The portion of the tooth that meets the gingiva

31. Interdental Septum
A bony projection that separates each socket
Occurs in unusual ways and distorted crowns may appear
Fleshy elevation under the tongue
Synovial fluid

32. Pulpitis
When the tissue becomes inflamed
Quarters of the teeth
Three cusps/ trifurcated
Biting edge of the teeth

33. Which molar is the wisdom tooth
Maxillary third molar
Small dark brushes
Retracts the tongue and raises the tip of the tongue
A dense tissue covered with mucous membrane that can withstand chewing

34. Odontoblast
Cells that form dentin
Permeante teeth replace the primary teeth
Tubules that pass through the entire surface of the dentin
Growth from the oral epithelium that gives rise to the tooth buds

35. Lingual Foramen
The internal surface at the center of the mandible
Buccal - lingual - and inferior alveolar
Oval depression of temporal bone in condyloid process
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

36. Function of Platysma
Forming organ takes shape and resembles the shape of a bell
Stained growth rings in dentin
Draws down the mandible and corners of the mouth
Acts as anchors between the alveolar bone and the tooth

37. Interdental Gingiva
Lower arch of the teeth
An extension of an unattached gingiva and the tooth
The moveable attachment of the muscle
Retracts the tongue and raises the tip of the tongue

38. Philtrum
Extends from the medial corner of the eye to the nasal cavity
Vertical groove on the midline of the upper lip
Supplies blood to the face and oral cavity
The slightly raised line extending down the middle of the hard palate

39. Embryo
The groove below the lower lips that separates the lips from the chin
Two weeks thru 8th week
4 cusps/ bifurcated
A dense tissue covered with mucous membrane that can withstand chewing

40. Labial Commissures
4th week
Corners of the mouth
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Creates the wall of the dentinal tubule

41. Function of Hyoglossus
Biting edge of the teeth
Primary and permanent
Cells that form cementum
Depresses the tongue

42. Alveolar Crest Fiber Group
Used to pulverize food
Small linear depression
Function to resist rotational forces and tilting
Glands the size of a walnut that lie on the inside of the mandible and empty saliva into the mouth thru the Wharton's duct

43. Quadrants
A line of tissue that extends from the tongue to the floor of the mouth
Greater - lesser - naso palatine nerves
Trigeminal - facial - glossopharyngeal - hypoglossal
Quarters of the teeth

44. Midline
Middle line of the teeth
12 years
2 small raised folds of tissue where the lingual frenum attaches
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

45. Interdental Ligament Group
Two
Buccal - lingual - and inferior alveolar
Shaping the tongue during speech - mastication and swallowing
Resist rotational forces and hold teeth in inter-proximal contact

46. Fossa
Rounded depression on a tooth
Depresses the tongue
A line of tissue that extends from the tongue to the floor of the mouth
Disk that acts like a cushion between the temporal bone and the condyloid process

47. Contact Area
Resists forces that try to pull the tooth outward
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Where the proximal sides of two teeth come together and touch
Function to resist rotational forces and tilting

48. Buccal Mucosa
Linear elevation of the tooth
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
The inner surface of the cheeks
(free gingiva) surrounds the teeth

49. Duct
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Canal or passage for fluid
Duct located on the parotid papilla
Teeth after cuspids

50. Cleft Palate
The fixed attachment of a muscle
Largest of the branches of the external carotid artery; supplies facial structure
The first predentin that is formed and matures within the tube
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

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Dental Assisting: Head And Neck Anatomy

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