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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. Anomalies
Palatoglossus - palatopharyngeal
Tubules that pass through the entire surface of the dentin
Extreme variations from the norm
Draws down the mandible and corners of the mouth

2. Perikymata
Oval structures that are located on the dorsal surface of the tongue
Small grooves noted on some teeth
Supplies blood to the roots and periodontal ligaments of the molars and premolars
The groove below the lower lips that separates the lips from the chin

3. Cleft Palate
A junction or center of veins that directly or indirectly drain a vast area
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Quarters of the teeth

4. Enamel Lamellae
Appears to be loosely attached - covering the alveolar bone.
Function to resist rotational forces and tilting
Narrow long enamel tuft
Follows the inside of the ramus and the body of the mandible

5. Incisal third
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Molaris meaning millstone
Small linear depression

6. Lingual Nerve Branch
No bicuspids/ no 3rd molars
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
Pulls the hyoid bone and the tongue anteriorly
Curve outward

7. Fetus
9 weeks thru birth
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Small head - low nasal bridge - thin upper lip - small mandible
What divides the tongue in half and runs from the base to the tip of the tongue

8. Gingiva
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Resists intrusive forces that try to push the tooth inwards
The inner surface of the cheeks
A dense tissue covered with mucous membrane that can withstand chewing

9. Facial Vein
When the dentin is exposed
Drains the facial structures beginning near the eye and descending toward the mandible
Two vertical extensions of the mandible
Where the proximal sides of two teeth come together and touch

10. Lesser Palatine Nerve
Where the ectoderm layer matures into the enamel
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Smaller branch that ennervates the soft palate uvula and tonsils
The line of demarcation between the attached gingiva and the marginal gingiva

11. External Oblique Ridge
Covers muscle tissue in the posterior portion of the palate
Follows the length of the body of the mandible past the last tooth and up to the ramus
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
A bat shaped bone which forms the anterior portion of the skull

12. Inferior Alveolar Artery
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Joined at the midline and are often referred to as the median Palatine suture
4/5 cusps/ 3 roots

13. Mucosa
Lining covers inside of the oral cavity
Inner portion of the enamel rod
Convex area on the lingual surface near gingiva
Shaping the tongue during speech - mastication and swallowing

14. Enamel Spindle
Short tubules that seem to crossover to the enamel
Supplies blood to the roots and periodontal ligaments of the interior teeth
A rounded area beyond the last posterior maxillary tooth
Biting edge of the teeth

15. What is the purpose of saliva?
To lubricate the oral cavity and to moisten food
Incremental line indicating trauma of birth
Inner portion of the enamel rod
When cells rapidly increase in number

16. Apical Fiber Group
Origin of the tooth
The cornerstone of the mouth
Forming organ takes shape and resembles the shape of a bell
Resists forces that try to pull the tooth outward

17. What are the two muscles of the soft palate?
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Enamel forming cells
Palatoglossus - palatopharyngeal
Located behind the ramus of the mandible and branches into five arteries

18. Salivary Glands
The development of different forms
Retracts the tongue and raises the tip of the tongue
Trigeminal nerve--because it ennervates the maxilla and the mandible
Secrete saliva to assist in process of digestion

19. Buccal
Elevated are of enamel that forms the Mesial and distal borders
Set of arches found farther in the back of the throat
Growth from the oral epithelium that gives rise to the tooth buds
Outside surface Which is towards the cheek - on posterior teeth

20. Mental Protuberance
Three bulges on the incisal edge
The tip of the chin
The largest of the salivary glands which lie just below and in front of the ear
4 cusps/ bifurcated

21. Muscle origine
The bone that separates the root on a tooth
The fixed attachment of a muscle
A period of both primary teeth and permeant teeth are in the dentition
The disc becomes displaced

22. Parotid glands
Acts as anchors between the alveolar bone and the tooth
Incremental lines around the layers of the enamel matrix
Wearing away of the incisal or occlusal surfaces of the tooth
The largest of the salivary glands which lie just below and in front of the ear

23. Where is the palate located?
Inside of the maxillary teeth
Triangular space in the gingival direction when two adjacent teeth are in contact
Third tooth from the midline
Disk that acts like a cushion between the temporal bone and the condyloid process

24. Secondary palate
Tooth emerges from gum tissue and becomes visible
Forms the remaining 2/3 of the hard and soft palate uvula
Largest of the branches of the external carotid artery; supplies facial structure
Triferacated

25. Sublingual Sulcus
Draws the hyoid bone superiorly and posteriorly and stabilizes it
A horseshoe shaped groove that follow the curve of the dental arch
The area on the crown of the tooth that is nearest the gingival
The disc becomes displaced

26. Purpose of premolars
Canal or passage for fluid
Constricts the nasopharyngeal passage and elevates the larynx
The largest of three openings located in the posterior region of the hard palate
Used to pulverize food

27. Dentinal Hypersensitivity
To dissolve
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Middle two teeth in the mouth
When the dentin is exposed

28. Nasolacrimal groove
Dividing point of a multi-rooted tooth
Extends from the medial corner of the eye to the nasal cavity
Hinge motion and gliding movement
Draws down the mandible and corners of the mouth

29. Succedaneous teeth
Elevates the posterior portion of the tongue and narrows the fauces
Small linear depression
Permeante teeth replace the primary teeth
Drains the superficial veins of the face and neck into the subclavian vein

30. What is the smallest tooth in dentition?
Mandibular central incisors
Tissue covering the alveolar processes
Allow flexibility during mastication - speech
Lift the hyoid bone and assist in opening the mouth

31. Zygomatic nerve
Ligaments and muscles of mastication
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Surface away from the midline
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

32. Proliferation
Wings of the sphenoid bone
1500 millimeters
When the surface of the teeth becomes grooved
Where the ectoderm layer matures into the enamel

33. Uvula
A projection that extends off the back of the soft palate
Extends from the mucogingival junction to the gingival groove
Drains the Pterygoid plexus of the veins
Aid in attaching the gingiva to the alveolar bone

34. Saliva
Calcium salts are deposited into formed tooth
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle

35. Nasal-Labial Groove
The slightly raised line extending down the middle of the hard palate
Lining covers inside of the oral cavity
Small grooves noted on some teeth
A faint line going from the ala of the nose to the corner of the mouth

36. How many cusps/ roots do the 2/3rd maxillary molars have?
When the tissue becomes inflamed
Three cusps/ trifurcated
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Resists intrusive forces that try to push the tooth inwards

37. Torus Mandibularis
Genioglossus - hyoglossus - styloglossus - palatoglossus
Excess bone formations under the tongue on the alvellar bone
The groove below the lower lips that separates the lips from the chin
6 months/3years

38. Contour Lines of Owen
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
32
Demonstrates a disturbance in the body metabolism
Second teeth next to central incisors

39. Median Sulcus
(free gingiva) surrounds the teeth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
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
What divides the tongue in half and runs from the base to the tip of the tongue

40. How many roots/ cusps does the mandibular first molar have?
Supportive fibers that anchor the tooth to the bone
A condition where the lower frenum attachment is very short/DDS/frenectomy
Act to maintain the gingival integrity of the marginal gingiva
Bifurcated/ 5 cusps

41. Sharpey's Fibers
1500 millimeters
Bi-cuspids
Acts as anchors between the alveolar bone and the tooth
When cells rapidly increase in number

42. What are the only permeant teeth that are not succedaneous?
Teeth will not erupt in proper position
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
To lubricate the oral cavity and to moisten food
Molars

43. Convex
Mildest form of cleft palate
Respiratory system - digestive system and glandular organs
To bulge of curve outward
Follows the length of the body of the mandible past the last tooth and up to the ramus

44. Tendon
Band of fibrous tissue which attaches muscle to bone
Small dark brushes
Where the proximal sides of two teeth come together and touch
Extends from the medial corner of the eye to the nasal cavity

45. Dental Sac
An enclosed area that matures into dentin - cementum and pulp
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
The disc becomes displaced
Resulting from an imperfect union where the lobes come together

46. Mantle Dentin
Molaris meaning millstone
The first predentin that is formed and matures within the tube
When the surface of the teeth becomes grooved
Incremental line indicating trauma of birth

47. Furcation
The largest of three openings located in the posterior region of the hard palate
Scroll like bones outside the nasal cavaties
Dividing point of a multi-rooted tooth
Separation of the upper lip ( 1 of 1000 live births)

48. Supplemental Groove
Supplies blood to the roots and periodontal ligaments of the interior teeth
Radiates from the developmental groove
1500 millimeters
Elevates the posterior portion of the tongue and narrows the fauces

49. Pterygoid plexus of the veins
Covering over the enamel that is left over from the epithelium ameloblasts
The inner surface of the lips
A junction or center of veins that directly or indirectly drain a vast area
Found only in multi-rooted teeth and resists rotational forces

50. Greater Palatine Nerve
Allow flexibility during mastication - speech
Forms into dentin - cementum and pulp of the teeth
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
The groove below the lower lips that separates the lips from the chin