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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.
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. Maxillary Arch
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Upper arch of the teeth
Largest facial bone with two sections joined at the median suture
Bi-cuspids

2. Fossa
Oval structures that are located on the dorsal surface of the tongue
A bat shaped bone which forms the anterior portion of the skull
Rounded depression on a tooth
Stained growth rings in dentin

3. Labial Mucosa
The inner surface of the lips
Bi-cuspids
The ridges that run horizontally across the hard palate behind the incisive papilla
Forms the remaining 2/3 of the hard and soft palate uvula

4. Gingival Sulcus
H20 - mucin - organic salts and digestive enzymes
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
The space between the unattached gingiva and the tooth
Moves the head backward and laterally

5. What are the 4 extrinsic muscles of the tongue
Genioglossus - hyoglossus - styloglossus - palatoglossus
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Cluster of tissue that manufactures and secrets fluid

6. How much saliva is produced daily?
1500 millimeters
Follows the length of the body of the mandible past the last tooth and up to the ramus
Cells develop into different tissues
Week 11

7. Alveolar Crest
Two cortical bone plates that come together between each tooth
The crown of the tooth that is nearest the incisal edge near the anterior tooth
The largest of three openings located in the posterior region of the hard palate
Looking at the border of the tongue

8. Dentinal Tubules
The space between the unattached gingiva and the tooth
Oval structures that are located on the dorsal surface of the tongue
Tubules that pass through the entire surface of the dentin
A raised area of tissue laying behind the maxillary central incisors on the hard palate

9. Median Sulcus
Band of fibrous tissue which attaches bone to bone
Extreme variations from the norm
Ligaments and muscles of mastication
What divides the tongue in half and runs from the base to the tip of the tongue

10. Cervical line
Divides the crown and the root
Compact bone plate of the facial and lingual surfaces
A triangular area located behind the last molar
Extends from the mucogingival junction to the gingival groove

11. Gingiva
A dense tissue covered with mucous membrane that can withstand chewing
Molaris meaning millstone
Upper arch of the teeth
A line of demarcation between the attached gingiva and alveolar mucosa

12. Dentoperiosteal Fiber Groups
Supportive fibers that anchor the tooth to the bone
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
No bicuspids/ no 3rd molars

13. Dentinal Hypersensitivity
Portion covered with cementum
When the dentin is exposed
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Dentin found between the tubules

14. Cuspid
Third tooth from the midline
Upper arch of the teeth
Bifurcated/ 5 cusps
Located in a depressed area between the pillars

15. Horizontal Fiber Group
Formed by the fibroblast cells and secures the tooth in the socket
When the surface of the teeth becomes grooved
A junction or center of veins that directly or indirectly drain a vast area
Functions the same as the alveolar cfg; originate in alveolar bone

16. Marginal Ridges
Papillae that give the tongue the strawberry effect
Appears to be loosely attached - covering the alveolar bone.
Compact bone plate of the facial and lingual surfaces
Elevated are of enamel that forms the Mesial and distal borders

17. Mucogingival Junction
Canal or passage for fluid
A line of demarcation between the attached gingiva and alveolar mucosa
A line that represents the alveolus bone lining the socket
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

18. Develop Mental Groove
Developmental segment of a tooth
Formed by the uniting of lobes during development of crown
Forms after the completion of the apical foramen
Third tooth from the midline

19. Eruption
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Tooth emerges from gum tissue and becomes visible
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Primary embryonic mesoderm layer that develops during the morpho differentiation period

20. Paranasal
Where the ectoderm layer matures into the enamel
1500 millimeters
Vertical groove on the midline of the upper lip
Of or pertaining to area surrounding naval cavity

21. When do oral and nasal cavity separate and palate develop?
Oval structures that are located on the dorsal surface of the tongue
Drains the maxiallary artery and superficial temporal arteries
Week 12
Week 11

22. Vestibule
Canal or passage for fluid
9 weeks thru birth
A pocket formed by the soft tissue of cheeks and gingiva
Convex area on the lingual surface near gingiva

23. Anterior Alveolar Nerve
The development of different tissues
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Supplies blood to the face and oral cavity
Formed by the fibroblast cells and secures the tooth in the socket

24. Alveolar Crest Fiber Group
4/5 cusps/ 3 roots
Divides the crown and the root
Function to resist rotational forces and tilting
Tissue covering the alveolar processes

25. Zygomatic nerve
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Mandibular central incisors
Pulverizing or chewing surface

26. Enamel Tufts
Small dark brushes
Week 11
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Bi-cuspids

27. What are the 2 sets of teeth?
Allow flexibility during mastication - speech
Cells From which connective tissue evolve
Primary and permanent
The moveable attachment of the muscle

28. Stippled
Cells From which connective tissue evolve
Healthy gingival tissue with an orange texture
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

29. Where is the palate located?
Small yellowish glands on the labial mucosa
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Maxillary third molar
Inside of the maxillary teeth

30. Dentogingival Fiber Groups
Bifurcated/ 5 cusps
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Act to maintain the gingival integrity of the marginal gingiva
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle

31. Epithelial Attachment
Interdental ligament
The gingiva in the floor of the gingival sulcus that attaches to the enamel
The mandibular first premolar
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids

32. Ectoderm
Mastication - aids in speech - influence facial structure - chewing surfaces
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Largest of the branches of the external carotid artery; supplies facial structure
Looking at the border of the tongue

33. Fetal Alcohol Syndrome symptons
Drains the maxiallary artery and superficial temporal arteries
The mandibular molars
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Small head - low nasal bridge - thin upper lip - small mandible

34. Maxillary vein
Papillae that give the tongue the strawberry effect
4th week
A condition where the lower frenum attachment is very short/DDS/frenectomy
Drains the Pterygoid plexus of the veins

35. Styloid Process
The largest of the salivary glands which lie just below and in front of the ear
Sharp projection on the under surface of the temporal bone
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
To lubricate the oral cavity and to moisten food

36. Central Incisor
Appears to be loosely attached - covering the alveolar bone.
Assist in the movement and functioning of the tongue
Middle two teeth in the mouth
Forms into dentin - cementum and pulp of the teeth

37. What is the latin word for molar?
Molaris meaning millstone
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
Genioglossus - hyoglossus - styloglossus - palatoglossus
Interdental ligament

38. Ala of the Nose
Found near the cementoenamel junction
The outer edge of the nostril
Constricts the nasopharyngeal passage and elevates the larynx
Trigeminal nerve--because it ennervates the maxilla and the mandible

39. Pulpitis
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
The connective tissue of the marginal gingiva
When the tissue becomes inflamed

40. Vermilion Zone
Excess dryness of the mouth
Portion of the lips that are red
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Full deep rich sound in nasal cavity

41. Imbritation Lines of Von Eboner
Stained growth rings in dentin
9 months (5 months ultrasound to tell sex)
2 small raised folds of tissue where the lingual frenum attaches
A horseshoe shaped groove that follow the curve of the dental arch

42. Pulp horns
To dissolve
Pointed elongations of the pulp
Cells that form cementum
Covers muscle tissue in the posterior portion of the palate

43. Cleft Palate
Synovial fluid
Mastication - aids in speech - influence facial structure - chewing surfaces
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

44. Parotid glands
Drains the maxiallary artery and superficial temporal arteries
The largest of the salivary glands which lie just below and in front of the ear
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

45. What are the 4 cranial nerves that ennervate the face and oral cavity
Small curved lines that run parellel to the CEJ
Trigeminal - facial - glossopharyngeal - hypoglossal
Lining covers inside of the oral cavity
Assist in depressing the mandible and elevating the tongue

46. What is Ankyloglossia and who can treat it / What is the treatment called?
The mandibular first premolar
Depresses the tongue
Two cortical bone plates that come together between each tooth
A condition where the lower frenum attachment is very short/DDS/frenectomy

47. Frenum
Excess bone in the middle of the palate
Cells that form dentin
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Inner portion of the enamel rod

48. Meniscus
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Lower arch of the teeth
Functions the same as the alveolar cfg; originate in alveolar bone
Disk that acts like a cushion between the temporal bone and the condyloid process

49. Anterior Tonsillar Pillar
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Calcified masses of dentin
Excess bone formations under the tongue on the alvellar bone
The slightly raised line extending down the middle of the hard palate

50. Buccal
Portion of the root seen in the oral cavity
Outside surface Which is towards the cheek - on posterior teeth
Cut - tear - and grind food
Opening in the mouth below the orbit on the maxillary bone