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Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. Cusps
Two
Used to pulverize food
Pointed or rounded mounds on the crown of the tooth
Covering over the enamel that is left over from the epithelium ameloblasts

2. Free Gingiva
An extension of an unattached gingiva and the tooth
Mandibular central incisors
The portion of the tooth that meets the gingiva
The study of the microscopic structure and functions of tissues

3. When does the maxillary first molar erupt?
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Allow flexibility during mastication - speech
6 years old
Used to pulverize food

4. Develop Mental Groove
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Follows the inside of the ramus and the body of the mandible
Formed by the uniting of lobes during development of crown
Corners of the mouth

5. Attached Gingiva
Genioglossus - hyoglossus - styloglossus - palatoglossus
Extends from the mucogingival junction to the gingival groove
Pulls the hyoid bone and the tongue anteriorly
Divides the crown and the root

6. Attrition
Study of the structure and form of the teeth
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Bicuspids
Wearing away of the incisal or occlusal surfaces of the tooth

7. Proliferation
Where the ectoderm layer matures into the enamel
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Tissue covering the alveolar processes
Folds of tissue that extend horizontally from the uvula to the base of the tongue

8. Neonatal line
Incremental line indicating trauma of birth
Rounded depression on a tooth
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
Disk that acts like a cushion between the temporal bone and the condyloid process

9. When do the tooth buds appear?
Week 11
Developmental segment of a tooth
Where the ramus meets the body of the mandible on the outside border
An extension of an unattached gingiva and the tooth

10. Odontoblast
Occlusal surface of the posterior tooth
Cells that form dentin
Two cortical bone plates that come together between each tooth
Rounded depression on a tooth

11. Evanesce
Circle and tighten the gingival margin around the neck of the tooth
To dissolve
Draws the hyoid bone superiorly and posteriorly and stabilizes it
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

12. If a patient receives toxic agents - how long does it take for their sense of taste to return?
4th week
10 days
Mucosa that covers the alveolar bone
Where the ectoderm layer matures into the enamel

13. Maxillary Arch
Bicuspids
Upper arch of the teeth
Digstric - Mylohyoid - stylohyoid - geniohyoid
Retracts the tongue and raises the tip of the tongue

14. Mamelons
Portion of the lips where the skin meets the vermilion zone
Three bulges on the incisal edge
Outside surface Which is towards the lips
Scroll like bones outside the nasal cavaties

15. What teeth do the deciduous (baby) tooth not include?
No bicuspids/ no 3rd molars
Outside surface Which is towards the cheek - on posterior teeth
Occurs in unusual ways and distorted crowns may appear
4 cusps/ bifurcated

16. Palatine Rugae
Act to maintain the gingival integrity of the marginal gingiva
Extends from the mucogingival junction to the gingival groove
The ridges that run horizontally across the hard palate behind the incisive papilla
Forming organ takes shape and resembles the shape of a bell

17. Duct
Disk that acts like a cushion between the temporal bone and the condyloid process
Excess bone in the middle of the palate
Canal or passage for fluid
Forms a large cavity above the roots of the maxillary molars

18. Function of Palatoglossus
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Elevates the posterior portion of the tongue and narrows the fauces
Small bony projections surrounding the lingual foramen
Supplies blood to the roots and periodontal ligaments of the interior teeth

19. Secondary Dentin
The groove below the lower lips that separates the lips from the chin
Origin - fixed point - insertion - movable point
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
Forms after the completion of the apical foramen

20. Greater Palatine Foramen
Three bulges on the incisal edge
Inside surface Which is towards the tongue - on anterior teeth
Small linear depression
The largest of three openings located in the posterior region of the hard palate

21. Labial Mucosa
Lift the hyoid bone and assist in opening the mouth
Drains the Pterygoid plexus of the veins
The inner surface of the lips
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle

22. Hypercementosis
Fleshy elevation under the tongue
Causes a thickening of the cementum around the apex
A raised area of tissue laying behind the maxillary central incisors on the hard palate
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

23. Pulpitis
20
When the tissue becomes inflamed
Follows the length of the body of the mandible past the last tooth and up to the ramus
No bicuspids/ no 3rd molars

24. Genial Tubercles
Small bony projections surrounding the lingual foramen
Wearing away of the incisal or occlusal surfaces of the tooth
Supplies blood to the roots and periodontal ligaments of the interior teeth
Short tubules that seem to crossover to the enamel

25. What is origin and What is insertion?
Origin - fixed point - insertion - movable point
Aid in attaching the gingiva to the alveolar bone
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
Oval structures that are located on the dorsal surface of the tongue

26. Internal Oblique Ridge
Bifurcated/ 5 cusps
Week 11
The cornerstone of the mouth
Follows the inside of the ramus and the body of the mandible

27. Frenum
Teeth after cuspids
Where the ectoderm layer matures into the enamel
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Full deep rich sound in nasal cavity

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

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29. Buccal Mucosa
Shaping the tongue during speech - mastication and swallowing
The inner surface of the cheeks
Healthy gingival tissue with an orange texture
A bony projection that separates each socket

30. Xerostomia
Excess dryness of the mouth
Study of the structure and form of the teeth
Outside surface Which is towards the cheek - on posterior teeth
Raised vertical folds of tissue on the lateral border of the tongue

31. Which molar is the wisdom tooth
Inner portion of the enamel rod
Maxillary third molar
Trigeminal - facial - glossopharyngeal - hypoglossal
Fifth cusp located on the mesial surface lingual surface of maxillary first molars

32. Mucosa
A bat shaped bone which forms the anterior portion of the skull
Formed by the uniting of lobes during development of crown
Lining covers inside of the oral cavity
Origin of the tooth

33. Gingiva
Linear elevation of the tooth
6 months/3years
Composed of mucosa and surrounds the necks of the teeth
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip

34. Anomalies
Assist in depressing the mandible and elevating the tongue
Substances between cells
Second teeth next to central incisors
Extreme variations from the norm

35. Cleft Lip
The mandibular first premolar
Separation of the upper lip ( 1 of 1000 live births)
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Palatoglossus - palatopharyngeal

36. Pit
Convex area on the lingual surface near gingiva
Place where the groove comes together or fissures cross
Bone that surrounds the root of the tooth
Pulverizing or chewing surface

37. Interradical Fiber Group
Palatoglossus - palatopharyngeal
Cut - tear - and grind food
The cornerstone of the mouth
Found only in multi-rooted teeth and resists rotational forces

38. Labial
A condition where the lower frenum attachment is very short/DDS/frenectomy
Small head - low nasal bridge - thin upper lip - small mandible
Three bulges on the incisal edge
Outside surface Which is towards the lips

39. Sharpey's Fibers
Retracts or depresses the tongue
To lubricate the oral cavity and to moisten food
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Acts as anchors between the alveolar bone and the tooth

40. Nasal-Labial Groove
The largest of the salivary glands which lie just below and in front of the ear
Where the ectoderm layer matures into the enamel
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
A faint line going from the ala of the nose to the corner of the mouth

41. What are the intrinsical muscles of the tongue responsible for?
Permeante teeth replace the primary teeth
Assist in the movement and functioning of the tongue
Tissue covering the alveolar processes
Shaping the tongue during speech - mastication and swallowing

42. How is the TMJ supported and what controls their movement?
Ligaments and muscles of mastication
The tip of the chin
Located behind the ramus of the mandible and branches into five arteries
Digstric - Mylohyoid - stylohyoid - geniohyoid

43. What teeth are removed if overcrowding occurs?
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Bicuspids
4/5 cusps/ 3 roots
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

44. Stomedeum
Mandibular central incisors
Primitive mouth
Week 11
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

45. Transverse Ridge
Pointed elongations of the pulp
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
A rounded area beyond the last posterior maxillary tooth
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

46. Function of Geneoglossus?
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Largest facial bone with two sections joined at the median suture
Papillae that give the tongue the strawberry effect
Retracts or depresses the tongue

47. Xygote
Drains the superficial veins of the face and neck into the subclavian vein
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
4 cusps/ bifurcated
When cells rapidly increase in number

48. Fibroblasts
Cells From which connective tissue evolve
Orbicularis oris - buccinator - mentalis - zygomatic major
Small bony projections surrounding the lingual foramen
Middle two teeth in the mouth

49. Incisal Edge
Branches off the inferior alveolar artery before intering the mandibular canal
Two
Calcium salts are deposited into formed tooth
Biting edge of the teeth

50. Marginal Ridges
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
Elevated are of enamel that forms the Mesial and distal borders
Retracts or depresses the tongue
Extends from the mucogingival junction to the gingival groove