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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. Incisive Arteries
Demonstrates a disturbance in the body metabolism
The largest of three openings located in the posterior region of the hard palate
Supplies blood to the roots and periodontal ligaments of the interior teeth
Place where the groove comes together or fissures cross

2. Succedaneous teeth
Permeante teeth replace the primary teeth
Trigeminal nerve--because it ennervates the maxilla and the mandible
Triangular space in the gingival direction when two adjacent teeth are in contact
Greater - lesser - naso palatine nerves

3. Gingival Hyperplasia
An overgrowth of the gingival tissue
The first predentin that is formed and matures within the tube
Interdental ligament
Place where the groove comes together or fissures cross

4. What is another name for premolars?
Wings of the sphenoid bone
Bi-cuspids
9 months (5 months ultrasound to tell sex)
The gingiva in the floor of the gingival sulcus that attaches to the enamel

5. Agenesis
Folds of tissue that extend horizontally from the uvula to the base of the tongue
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
Buccal - lingual - and inferior alveolar
Occurs in unusual ways and distorted crowns may appear

6. Palatine Bones
Excess bone formations under the tongue on the alvellar bone
A line of tissue that extends from the tongue to the floor of the mouth
Joined at the midline and are often referred to as the median Palatine suture
To bulge of curve outward

7. Alveolus
Short tubules that seem to crossover to the enamel
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Bone that surrounds the root of the tooth
Wings of the sphenoid bone

8. Marginal GIngiva
Bluish veins that run the length of the tongue
Radiates from the developmental groove
(free gingiva) surrounds the teeth
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

9. External Oblique Ridge
Follows the length of the body of the mandible past the last tooth and up to the ramus
The first predentin that is formed and matures within the tube
The portion of the tooth that meets the gingiva
Peg shaped crown with a smooth surface

10. Incisive Papilla
Located on the inside of the body of the ramus
Found only in multi-rooted teeth and resists rotational forces
The line of demarcation between the attached gingiva and the marginal gingiva
A raised area of tissue laying behind the maxillary central incisors on the hard palate

11. How many cusps/ roots do the 2/3rd mandibular molars have?
Demonstrates a disturbance in the body metabolism
The study of the microscopic structure and functions of tissues
Divides the crown and the root
4 cusps/ bifurcated

12. Palantine Tonsils
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Trigeminal - facial - glossopharyngeal - hypoglossal
Located in a depressed area between the pillars
Orbicularis oris - buccinator - mentalis - zygomatic major

13. Osteoclasts
Primary and permanent
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Draws down the mandible and corners of the mouth

14. Sharpey's Fibers
Bluish veins that run the length of the tongue
Assists in elevating the chin
Acts as anchors between the alveolar bone and the tooth
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

15. Xygote
When cells rapidly increase in number
Function to resist rotational forces and tilting
A rounded area beyond the last posterior maxillary tooth
Developmental segment of a tooth

16. Zygomatic nerve
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Bifurcated/ 5 cusps
H20 - mucin - organic salts and digestive enzymes
Located on the inside of the body of the ramus

17. Dental Lamina
Resist rotational forces and hold teeth in inter-proximal contact
Growth from the oral epithelium that gives rise to the tooth buds
Dividing point of a multi-rooted tooth
Natural teeth in position

18. Deep Facial Veins
Triangular space in the gingival direction when two adjacent teeth are in contact
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Lining covers inside of the oral cavity
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars

19. Sulingual Folds
Intervating the anterior teeth and the labial gingiva
Peg shaped crown with a smooth surface
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Initiation of the tooth begins

20. When do oral and nasal cavity separate and palate develop?
Where the ramus meets the body of the mandible on the outside border
Set of arches found farther in the back of the throat
Week 12
2 small raised folds of tissue where the lingual frenum attaches

21. Anatomical root
Week 11
Excess bone in the middle of the palate
Outside surface Which is towards the lips
Portion covered with cementum

22. Vermilion Border
Greater - lesser - naso palatine nerves
Portion of the lips where the skin meets the vermilion zone
Curve outward
Orbicularis oris - buccinator - mentalis - zygomatic major

23. Posterior Superior Alveolar Nerve
Small grooves noted on some teeth
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Supportive fibers that anchor the tooth to the bone
Composed of mucosa and surrounds the necks of the teeth

24. Resonance
Function to resist rotational forces and tilting
Elevated are of enamel that forms the Mesial and distal borders
Triferacated
Full deep rich sound in nasal cavity

25. Midline
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Functions the same as the alveolar cfg; originate in alveolar bone
Middle line of the teeth
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

26. Fossa
Drains the facial structures beginning near the eye and descending toward the mandible
Rounded depression on a tooth
The mandibular first premolar
What divides the tongue in half and runs from the base to the tip of the tongue

27. Dental Arteries
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Opening in the mouth below the orbit on the maxillary bone
Genioglossus - hyoglossus - styloglossus - palatoglossus
12 years

28. Maxillary Nerve Branch
Separation of the upper lip ( 1 of 1000 live births)
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
The deepest point of the vestibule
No bicuspids/ no 3rd molars

29. Convex
Sharp projection on the under surface of the temporal bone
To bulge of curve outward
Mildest form of cleft palate
The first predentin that is formed and matures within the tube

30. Perikymata
Small grooves noted on some teeth
Oval structures that are located on the dorsal surface of the tongue
The bone that separates the root on a tooth
Triferacated

31. Apposition
Wearing away of the incisal or occlusal surfaces of the tooth
Calcium salts are deposited into formed tooth
Drains the floor of the mouth
Supportive fibers that anchor the tooth to the bone

32. Circumpulpal Dentin
Scroll like bones outside the nasal cavaties
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Triferacated
The layer of dentin that surrounds the pulp

33. Denticion
Natural teeth in position
Oval depression of temporal bone in condyloid process
Retracts the tongue and raises the tip of the tongue
Small yellowish glands on the labial mucosa

34. What are the 4 maxillary nerve branches?
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Lining covers inside of the oral cavity
Drains the facial structures beginning near the eye and descending toward the mandible
The largest of three openings located in the posterior region of the hard palate

35. Facial Artery
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
An extension of an unattached gingiva and the tooth
When the surface of the teeth becomes grooved
Scroll like bones outside the nasal cavaties

36. What is the largest cranial nerve and the most important to dental auxillaries and why?
The outer edge of the nostril
Second teeth next to central incisors
Trigeminal nerve--because it ennervates the maxilla and the mandible
Composed of mucosa and surrounds the necks of the teeth

37. Lingual Frenum
Allow flexibility during mastication - speech
A line of tissue that extends from the tongue to the floor of the mouth
Quarters of the teeth
Full deep rich sound in nasal cavity

38. Papilla
Duct located on the parotid papilla
Small raised projections where taste buds are located
Interdental ligament
The bone that separates the root on a tooth

39. Dentinal Hypersensitivity
Clear fluid secreted by the salivary and mucous glands throughout the mouth
When the dentin is exposed
The internal surface at the center of the mandible
Three bulges on the incisal edge

40. Pterygoid Process
Convex area on the lingual surface near gingiva
Drains the maxiallary artery and superficial temporal arteries
Wings of the sphenoid bone
When the dentin is exposed

41. Central Incisor
A faint line going from the ala of the nose to the corner of the mouth
Middle two teeth in the mouth
Hinge motion and gliding movement
Ligaments and muscles of mastication

42. Buckle groove
Shaping the tongue during speech - mastication and swallowing
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Palatoglossus - palatopharyngeal
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

43. Alveologingival Fiber Groups
Third tooth from the midline
A pocket formed by the soft tissue of cheeks and gingiva
Aid in attaching the gingiva to the alveolar bone
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

44. Pterygoid plexus of the veins
The outer edge of the nostril
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
A junction or center of veins that directly or indirectly drain a vast area
Duct located on the parotid papilla

45. lst and second premolars
Fleshy elevation under the tongue
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Teeth after cuspids
Retracts the tongue and raises the tip of the tongue

46. What is Ankyloglossia and who can treat it / What is the treatment called?
Tissue fluid surrounding the cell membrane of the odontoblast
Raised vertical folds of tissue on the lateral border of the tongue
A condition where the lower frenum attachment is very short/DDS/frenectomy
Corners of the mouth

47. Rod Core
Responsible for laying down the enamel matrix into place
Separates the developing oral cavities from the nasal cavities
A pocket formed by the soft tissue of cheeks and gingiva
Inner portion of the enamel rod

48. Marginal Ridges
Elevated are of enamel that forms the Mesial and distal borders
10 days
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Maxillary third molar

49. Mylohyoid Artery
Inside of the maxillary teeth
A small projection in the middle of the upper lip
Portion of the lips where the skin meets the vermilion zone
Branches off the inferior alveolar artery before intering the mandibular canal

50. Nasmyths Membrane
Week 12
An extension of an unattached gingiva and the tooth
Separation of the upper lip ( 1 of 1000 live births)
Covering over the enamel that is left over from the epithelium ameloblasts