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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. Imbracation Lines
A projection that extends off the back of the soft palate
Small curved lines that run parellel to the CEJ
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Pointed or rounded mounds on the crown of the tooth

2. Labial Commissures
The corners of the mouth where the top and bottom lip meet
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Supportive fibers that anchor the tooth to the bone

3. Where is the palate located?
Inside of the maxillary teeth
A rounded area beyond the last posterior maxillary tooth
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Covers muscle tissue in the posterior portion of the palate

4. Mylohyoid Nerve Branch
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Origin of the tooth
Sharp projection on the under surface of the temporal bone
Causes a thickening of the cementum around the apex

5. Maxillary Tuberosity
Dividing point of a multi-rooted tooth
A rounded area beyond the last posterior maxillary tooth
The fixed attachment of a muscle
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

6. Cementoblast
Of or pertaining to area surrounding naval cavity
The corners of the mouth where the top and bottom lip meet
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Cells that form cementum

7. Lingual Vein
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
The study of the microscopic structure and functions of tissues
Drains the floor of the mouth

8. Facial Vein
Drains the facial structures beginning near the eye and descending toward the mandible
Forming organ takes shape and resembles the shape of a bell
Two weeks thru 8th week
The teeth located at the back of the mouth

9. Palatine Rugae
The ridges that run horizontally across the hard palate behind the incisive papilla
(free gingiva) surrounds the teeth
Branches off the inferior alveolar artery before intering the mandibular canal
Supplies blood to the face and oral cavity

10. Sphenoid
A bat shaped bone which forms the anterior portion of the skull
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Trigeminal nerve--because it ennervates the maxilla and the mandible
Demonstrates a disturbance in the body metabolism

11. Maxillary Nerve Branch
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
2 small raised folds of tissue where the lingual frenum attaches
4/5 cusps/ 3 roots
Resist rotational forces and hold teeth in inter-proximal contact

12. Genial Tubercles
Small bony projections surrounding the lingual foramen
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Lift the hyoid bone and assist in opening the mouth
The deepest point of the vestibule

13. Mental Nerve Branch
Forms after the completion of the apical foramen
Largest division of the trigeminal nerve
Hinge motion and gliding movement
A horseshoe shaped groove that follow the curve of the dental arch

14. How many cusps/ roots do the 2/3rd maxillary molars have?
Shaping the tongue during speech - mastication and swallowing
Retracts the tongue and raises the tip of the tongue
Three cusps/ trifurcated
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

15. Dentinal Fluid
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
The internal surface at the center of the mandible
Follows the inside of the ramus and the body of the mandible
Tissue fluid surrounding the cell membrane of the odontoblast

16. Enamel Dysplasia
10 days
A small projection in the middle of the upper lip
4th week
When the surface of the teeth becomes grooved

17. Evanesce
To dissolve
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Chewing and swallowing food
The deepest point of the vestibule

18. Function of Sternocleidomastoid
Primary and permanent
Branches off the inferior alveolar artery before intering the mandibular canal
Assists in elevating the chin
The study of the microscopic structure and functions of tissues

19. Retromolar Area
Teeth will not erupt in proper position
Greater - lesser - naso palatine nerves
The development of different tissues
A triangular area located behind the last molar

20. Soft Palate
Covers muscle tissue in the posterior portion of the palate
Elevated are of enamel that forms the Mesial and distal borders
Assist in the movement and functioning of the tongue
Enamel is thinner - pulp chamber is smaller -

21. Exfoliated
Looking at the border of the tongue
Joined at the midline and are often referred to as the median Palatine suture
Shed from the oral cavity
The tip of the chin

22. Histo Differentiation
The inner surface of the lips
Triangular space in the gingival direction when two adjacent teeth are in contact
Curve outward
Cells develop into different tissues

23. How many cusps does the second bicuspid have?
Mucosa that covers the alveolar bone
Two
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Mastication - aids in speech - influence facial structure - chewing surfaces

24. What are the largest and strongest of the mandibular teeth
The first predentin that is formed and matures within the tube
Oval structures that are located on the dorsal surface of the tongue
What divides the tongue in half and runs from the base to the tip of the tongue
The mandibular molars

25. What are the two ways the TMJs move?
Located behind the ramus of the mandible and branches into five arteries
Vertical groove on the midline of the upper lip
Hinge motion and gliding movement
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle

26. If a patient receives toxic agents - how long does it take for their sense of taste to return?
Small linear depression
10 days
A line that represents the alveolus bone lining the socket
Follows the length of the body of the mandible past the last tooth and up to the ramus

27. Develop Mental Groove
Formed by the uniting of lobes during development of crown
A bat shaped bone which forms the anterior portion of the skull
Extends from the medial corner of the eye to the nasal cavity
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

28. Median Sulcus
Narrow long enamel tuft
What divides the tongue in half and runs from the base to the tip of the tongue
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Dentin found between the tubules

29. Embryo
Two weeks thru 8th week
Week 12
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Indented

30. Fetal Alcohol Syndrome symptons
The layer of dentin that surrounds the pulp
A line that represents the alveolus bone lining the socket
Healthy gingival tissue with an orange texture
Small head - low nasal bridge - thin upper lip - small mandible

31. Labial-Mental Groove
Drains the maxiallary artery and superficial temporal arteries
Trigeminal - facial - glossopharyngeal - hypoglossal
2 small raised folds of tissue where the lingual frenum attaches
The groove below the lower lips that separates the lips from the chin

32. Mandible Arch
Small bony projections surrounding the lingual foramen
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
Lower arch of the teeth
Circle and tighten the gingival margin around the neck of the tooth

33. Linea Alba
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
What divides the tongue in half and runs from the base to the tip of the tongue
Set of arches found farther in the back of the throat
Retracts or depresses the tongue

34. Mesoderm
The connective tissue of the marginal gingiva
The development of different cells
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Forms into dentin - cementum and pulp of the teeth

35. Sharpey's Fibers
Acts as anchors between the alveolar bone and the tooth
A small projection in the middle of the upper lip
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
The teeth located at the back of the mouth

36. Cleft Uvula
Excess dryness of the mouth
Retracts the tongue and raises the tip of the tongue
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Mildest form of cleft palate

37. Quadrants
Respiratory system - digestive system and glandular organs
Quarters of the teeth
2 small raised folds of tissue where the lingual frenum attaches
Act to maintain the gingival integrity of the marginal gingiva

38. Lateral Incisor
Second teeth next to central incisors
The cornerstone of the mouth
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
Origin of the tooth

39. Fissure
The internal surface at the center of the mandible
Maxillary third molar
Assists in elevating the chin
Resulting from an imperfect union where the lobes come together

40. Cusp of Caribelli
Supplies blood to the roots and periodontal ligaments of the interior teeth
Separates the developing oral cavities from the nasal cavities
To bulge of curve outward
Fifth cusp located on the mesial surface lingual surface of maxillary first molars

41. Inferior Alveolar Artery
Drains the floor of the mouth
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
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

42. Mamelons
Molaris meaning millstone
Bifurcated/ 5 cusps
Three bulges on the incisal edge
Forming organ takes shape and resembles the shape of a bell

43. Intertubular Dentin
Dentin found between the tubules
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
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

44. What are the 4 pairs of muscles of mastication!
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Forms the remaining 2/3 of the hard and soft palate uvula
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

45. What are the 4 extrinsic muscles of the tongue
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
1500 millimeters
Resist rotational forces and hold teeth in inter-proximal contact
Genioglossus - hyoglossus - styloglossus - palatoglossus

46. Osteoclasts
Outside surface Which is towards the cheek - on posterior teeth
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
A condition where the lower frenum attachment is very short/DDS/frenectomy
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

47. What is the longest tooth in the mandibular arch?
Biting edge of the teeth
The mandibular first premolar
Tissue fluid surrounding the cell membrane of the odontoblast
The bone that separates the root on a tooth

48. Xygote
Forms into dentin - cementum and pulp of the teeth
Forming organ takes shape and resembles the shape of a bell
When cells rapidly increase in number
Slight ridges on the cervical third of certain teeth that extend mesiodistally

49. Succedaneous teeth
Draws the hyoid bone superiorly and posteriorly and stabilizes it
An overgrowth of the gingival tissue
Circle and tighten the gingival margin around the neck of the tooth
Permeante teeth replace the primary teeth

50. Mastication
Chewing and swallowing food
The bone that separates the root on a tooth
Two cortical bone plates that come together between each tooth
Genioglossus - hyoglossus - styloglossus - palatoglossus