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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. Genial Tubercles
Small bony projections surrounding the lingual foramen
2 to 3 pints
Forms a large cavity above the roots of the maxillary molars
The teeth located at the back of the mouth

2. Circumvallate Papillae
Hinge motion and gliding movement
Where the ectoderm layer matures into the enamel
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Functions the same as the alveolar cfg; originate in alveolar bone

3. Transverse Ridge
Separates the developing oral cavities from the nasal cavities
Lower arch of the teeth
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

4. Anomalies
Extreme variations from the norm
The deepest point of the vestibule
Moves the head backward and laterally
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

5. Free Gingiva
Upper arch of the teeth
Supplies blood to the roots and periodontal ligaments of the molars and premolars
The ridges that run horizontally across the hard palate behind the incisive papilla
The portion of the tooth that meets the gingiva

6. Linea Alba
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Draws the hyoid bone superiorly and posteriorly and stabilizes it
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Developmental segment of a tooth

7. Lingual Frenum
Primary and permanent
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
A line of tissue that extends from the tongue to the floor of the mouth
No bicuspids/ no 3rd molars

8. Morpho differentiation
The development of different forms
The cornerstone of the mouth
Teeth will not erupt in proper position
No bicuspids/ no 3rd molars

9. Secondary Dentin
Inner portion of the enamel rod
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Forms after the completion of the apical foramen
Supplies blood to the roots and periodontal ligaments of the interior teeth

10. Gingival Groove
Portion of the lips where the skin meets the vermilion zone
The line of demarcation between the attached gingiva and the marginal gingiva
Outside surface Which is towards the lips
Compact bone plate of the facial and lingual surfaces

11. Gingival Sulcus
Quarters of the teeth
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Fleshy elevation under the tongue
The space between the unattached gingiva and the tooth

12. Function of Stylohyoid
Draws the hyoid bone superiorly and posteriorly and stabilizes it
A faint line going from the ala of the nose to the corner of the mouth
Small bony projections surrounding the lingual foramen
Scroll like bones outside the nasal cavaties

13. Gestational period
Covers muscle tissue in the posterior portion of the palate
Substances between cells
Folds of tissue to the the lingual veins
9 months (5 months ultrasound to tell sex)

14. Rami
Separates the developing oral cavities from the nasal cavities
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Two vertical extensions of the mandible
Aid in attaching the gingiva to the alveolar bone

15. What are the 3 branches of the pterygopalatine nerve branch?
Bifurcated/ 5 cusps
Incremental line indicating trauma of birth
Greater - lesser - naso palatine nerves
Pointed or rounded mounds on the crown of the tooth

16. Lesser Palatine Nerve
Dentin found between the tubules
Smaller branch that ennervates the soft palate uvula and tonsils
The mandibular first premolar
Elevates the posterior portion of the tongue and narrows the fauces

17. Pterygoid plexus of the veins
Drains the floor of the mouth
The moveable attachment of the muscle
A junction or center of veins that directly or indirectly drain a vast area
Incremental line indicating trauma of birth

18. Lesser Palatine Foramen
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Genioglossus - hyoglossus - styloglossus - palatoglossus
Bifurcated/ 5 cusps
Maxillary first molar

19. TMJ bones are bathed In what solution?
Band of fibrous tissue which attaches bone to bone
Synovial fluid
Follows the length of the body of the mandible past the last tooth and up to the ramus
When the surface of the teeth becomes grooved

20. Function of Styloglossus
Cluster of tissue that manufactures and secrets fluid
Retracts the tongue and raises the tip of the tongue
Drains the Pterygoid plexus of the veins
Extreme variations from the norm

21. Intertubular Dentin
The outer edge of the nostril
Dentin found between the tubules
Enamel forming cells
Two vertical extensions of the mandible

22. Internal Carotid Artery
Shaping the tongue during speech - mastication and swallowing
Supplies blood to the brain and the eyes
Creates the wall of the dentinal tubule
Intervating the anterior teeth and the labial gingiva

23. Parotid glands
The mandibular first premolar
Extends from the mucogingival junction to the gingival groove
Excess bone formations under the tongue on the alvellar bone
The largest of the salivary glands which lie just below and in front of the ear

24. External Auditory Meatus
Opening for the ear
A line of tissue that extends from the tongue to the floor of the mouth
Fleshy elevation under the tongue
The inner surface of the cheeks

25. If a patient receives toxic agents - how long does it take for their sense of taste to return?
10 days
Healthy gingival tissue with an orange texture
Incremental lines around the layers of the enamel matrix
Causes a thickening of the cementum around the apex

26. Sublingual Glands
Disk that acts like a cushion between the temporal bone and the condyloid process
Trigeminal - facial - glossopharyngeal - hypoglossal
Enamel forming cells
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

27. Mandibular Foramen
Assists in elevating the chin
The mandibular first premolar
The tip of the chin
Located on the inside of the body of the ramus

28. Pulp horns
A flap of tissue on the on the buccal mucosa
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
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Pointed elongations of the pulp

29. Histo Differentation
The development of different tissues
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
A junction or center of veins that directly or indirectly drain a vast area
Creates the wall of the dentinal tubule

30. Gland
Cut - tear - and grind food
Cluster of tissue that manufactures and secrets fluid
Stained growth rings in dentin
Forms after the completion of the apical foramen

31. Circular Ligament Fiber Groups
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Circle and tighten the gingival margin around the neck of the tooth
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Mastication - aids in speech - influence facial structure - chewing surfaces

32. Labial Commissures
Corners of the mouth
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Where the ectoderm layer matures into the enamel
Hinge motion and gliding movement

33. Tome's process
Growth from the oral epithelium that gives rise to the tooth buds
Portion of the root seen in the oral cavity
Responsible for laying down the enamel matrix into place
Set of arches found farther in the back of the throat

34. Incisive Nerve branch
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Intervating the anterior teeth and the labial gingiva
Cells that form dentin
The tip of the chin

35. Median Sulcus
What divides the tongue in half and runs from the base to the tip of the tongue
The portion of the tooth that meets the gingiva
The groove below the lower lips that separates the lips from the chin
Bifurcated/ 5 cusps

36. Furcation
When cells rapidly increase in number
Largest division of the trigeminal nerve
Dividing point of a multi-rooted tooth
Papillae that give the tongue the strawberry effect

37. Tubercle of the Lip
Draws down the mandible and corners of the mouth
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Primary embryonic mesoderm layer that develops during the morpho differentiation period
A small projection in the middle of the upper lip

38. Vermilion Border
Scroll like bones outside the nasal cavaties
Portion of the lips where the skin meets the vermilion zone
Platysma - trapezius - sternocleidomastoid
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

39. Dentogingival Fiber Groups
Act to maintain the gingival integrity of the marginal gingiva
Molars
A junction or center of veins that directly or indirectly drain a vast area
Triangular space in the gingival direction when two adjacent teeth are in contact

40. Mylohyoid Artery
Branches off the inferior alveolar artery before intering the mandibular canal
Found near the cementoenamel junction
Aid in attaching the gingiva to the alveolar bone
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

41. Buccal
The inner surface of the cheeks
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Retracts the tongue and raises the tip of the tongue
Outside surface Which is towards the cheek - on posterior teeth

42. Function of Trapezius
Outside surface Which is towards the lips
The bone that separates the root on a tooth
Moves the head backward and laterally
The disc becomes displaced

43. Supplemental Groove
Study of prenatal growth and the developing process of an individual
Radiates from the developmental groove
A line of demarcation between the attached gingiva and alveolar mucosa
Separation of the upper lip ( 1 of 1000 live births)

44. Alveologingival Fiber Groups
Trigeminal nerve--because it ennervates the maxilla and the mandible
Aid in attaching the gingiva to the alveolar bone
A pocket formed by the soft tissue of cheeks and gingiva
Healthy gingival tissue with an orange texture

45. Glenoid Fossa
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Oval depression of temporal bone in condyloid process
Follows the inside of the ramus and the body of the mandible
Initiation of the tooth begins

46. Perikymata
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Biting edge of the teeth
Fleshy elevation under the tongue
Small grooves noted on some teeth

47. Symphysis
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Raised vertical folds of tissue on the lateral border of the tongue
Bi-cuspids
2 small raised folds of tissue where the lingual frenum attaches

48. Cyto differentiation
Intervating the anterior teeth and the labial gingiva
Upper arch of the teeth
The portion of the tooth that meets the gingiva
The development of different cells

49. How is the TMJ supported and what controls their movement?
Ligaments and muscles of mastication
Retracts the tongue and raises the tip of the tongue
Trigeminal - facial - glossopharyngeal - hypoglossal
The cornerstone of the mouth

50. What are the 2 sets of teeth?
Two vertical extensions of the mandible
Second teeth next to central incisors
Primary and permanent
Enamel is thinner - pulp chamber is smaller -