Test your basic knowledge |

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. Lines of Retzius
Extends from the medial corner of the eye to the nasal cavity
Acts as anchors between the alveolar bone and the tooth
Incremental lines around the layers of the enamel matrix
Small head - low nasal bridge - thin upper lip - small mandible

2. Histo Differentiation
Found only in multi-rooted teeth and resists rotational forces
Cells develop into different tissues
Natural teeth in position
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

3. Epithelial Attachment
The largest of three openings located in the posterior region of the hard palate
Short tubules that seem to crossover to the enamel
Inside of the maxillary teeth
The gingiva in the floor of the gingival sulcus that attaches to the enamel

4. Cusp of Caribelli
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Two
Resists intrusive forces that try to push the tooth inwards
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar

5. Odontoblast
Convex area on the lingual surface near gingiva
Cells that form dentin
Occlusal surface of the posterior tooth
Primary and permanent

6. Rami
A flap of tissue on the on the buccal mucosa
Two vertical extensions of the mandible
Trigeminal - facial - glossopharyngeal - hypoglossal
Opening for the ear

7. Landmarks
Vertical groove on the midline of the upper lip
A pocket formed by the soft tissue of cheeks and gingiva
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Genioglossus - hyoglossus - styloglossus - palatoglossus

8. How many teeth are in the permanent set of teeth?
32
The teeth located at the back of the mouth
Teeth after cuspids
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

9. How many cusps/ roots do the 2/3rd mandibular molars have?
Enamel forming cells
Shed from the oral cavity
4 cusps/ bifurcated
Slight ridges on the cervical third of certain teeth that extend mesiodistally

10. When does the maxillary second molar erupt?
12 years
Branches off the inferior alveolar artery before intering the mandibular canal
Pointed elongations of the pulp
Radiates from the developmental groove

11. Convex
Healthy gingival tissue with an orange texture
To bulge of curve outward
A line of tissue that extends from the tongue to the floor of the mouth
A bony plate covered with keratinized tissue located in the anterior portion of the palate

12. Lingual Nerve Branch
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
Divides the crown and the root
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
Dividing point of a multi-rooted tooth

13. Ala of the Nose
Elevates the posterior portion of the tongue and narrows the fauces
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Wings of the sphenoid bone
The outer edge of the nostril

14. Fibroblasts
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Cells From which connective tissue evolve
The mandibular molars
The cornerstone of the mouth

15. Enamel Spindle
Intervating the anterior teeth and the labial gingiva
Short tubules that seem to crossover to the enamel
Formed by the fibroblast cells and secures the tooth in the socket
Branches off the inferior alveolar artery before intering the mandibular canal

16. Cleft Uvula
Draws down the mandible and corners of the mouth
The development of different tissues
Raised vertical folds of tissue on the lateral border of the tongue
Mildest form of cleft palate

17. Xygote
Conception thru the first two weeks
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
32
Permeante teeth replace the primary teeth

18. Neonatal line
A bony plate covered with keratinized tissue located in the anterior portion of the palate
The area on the crown of the tooth that is nearest the gingival
The deepest point of the vestibule
Incremental line indicating trauma of birth

19. Primary palate
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Opening in the mouth below the orbit on the maxillary bone
Oval structures that are located on the dorsal surface of the tongue
Separates the developing oral cavities from the nasal cavities

20. Fungiform Papillae
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Papillae that give the tongue the strawberry effect
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

21. Lateral Incisor
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
The fixed attachment of a muscle
Second teeth next to central incisors
Incremental line indicating trauma of birth

22. Evanesce
Digstric - Mylohyoid - stylohyoid - geniohyoid
Outside surface Which is towards the lips
To dissolve
A line of demarcation between the attached gingiva and alveolar mucosa

23. Enamel Tufts
Small dark brushes
Quarters of the teeth
Interdental ligament
Fleshy elevation under the tongue

24. Sublingual Caruncles
Divides the crown and the root
Extends from the mucogingival junction to the gingival groove
9 weeks thru birth
2 small raised folds of tissue where the lingual frenum attaches

25. Which molar contains the cusp of Caribelli?
Follows the inside of the ramus and the body of the mandible
Maxillary first molar
The crown of the tooth that is nearest the incisal edge near the anterior tooth
An extension of an unattached gingiva and the tooth

26. Enamel Dysplasia
When the surface of the teeth becomes grooved
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Drains the superficial veins of the face and neck into the subclavian vein
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

27. Apical Fiber Group
H20 - mucin - organic salts and digestive enzymes
Folds of tissue that extend horizontally from the uvula to the base of the tongue
The fixed attachment of a muscle
Resists forces that try to pull the tooth outward

28. Xerostomia
An overgrowth of the gingival tissue
The deepest point of the vestibule
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Excess dryness of the mouth

29. Mucosa
Inner portion of the enamel rod
Lining covers inside of the oral cavity
4 cusps/ bifurcated
A flap of tissue on the on the buccal mucosa

30. Anterior Alveolar Nerve
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Portion covered with cementum
Rounded depression on a tooth
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

31. What are the three muscles of the neck?
A pocket formed by the soft tissue of cheeks and gingiva
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Full deep rich sound in nasal cavity
Platysma - trapezius - sternocleidomastoid

32. Attached Gingiva
The line of demarcation between the attached gingiva and the marginal gingiva
Extends from the mucogingival junction to the gingival groove
Responsible for laying down the enamel matrix into place
Follows the inside of the ramus and the body of the mandible

33. How much saliva is produced daily?
Teeth will not erupt in proper position
1500 millimeters
Greater - lesser - naso palatine nerves
Outside surface Which is towards the lips

34. What ligament is retained the longest during periodontal disease?
Cells develop into different tissues
Duct located on the parotid papilla
Wings of the sphenoid bone
Interdental ligament

35. Pulp Stones
The first predentin that is formed and matures within the tube
Supplies blood to the roots and periodontal ligaments of the interior teeth
Calcified masses of dentin
A period of both primary teeth and permeant teeth are in the dentition

36. Tubercle of the Lip
A bony plate covered with keratinized tissue located in the anterior portion of the palate
A small projection in the middle of the upper lip
Band of fibrous tissue which attaches muscle to bone
Divides the crown and the root

37. Torus
Fleshy elevation under the tongue
Joined at the midline and are often referred to as the median Palatine suture
Excess bone in the middle of the palate
32

38. Lesser Palatine Nerve
Triferacated
Smaller branch that ennervates the soft palate uvula and tonsils
Separates the developing oral cavities from the nasal cavities
The internal surface at the center of the mandible

39. Median Sulcus
Natural teeth in position
What divides the tongue in half and runs from the base to the tip of the tongue
Peg shaped crown with a smooth surface
Extends from the mucogingival junction to the gingival groove

40. Maxillary Sinus
Draws down the mandible and corners of the mouth
Forms a large cavity above the roots of the maxillary molars
The outer edge of the nostril
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

41. What is the purpose of saliva?
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Substances between cells
Supplies blood to the face and oral cavity
To lubricate the oral cavity and to moisten food

42. Oblique Ridge
To lubricate the oral cavity and to moisten food
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

43. Mesenchyme Tissue
When the surface of the teeth becomes grooved
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Lining covers inside of the oral cavity

44. Lesser Palatine Foramen
Biting edge of the teeth
Retracts or depresses the tongue
Duct located on the parotid papilla
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

45. Maxillary Tuberosity
Small raised projections where taste buds are located
A rounded area beyond the last posterior maxillary tooth
Cells that form cementum
Covers muscle tissue in the posterior portion of the palate

46. Groove
Triangular space in the gingival direction when two adjacent teeth are in contact
A dense tissue covered with mucous membrane that can withstand chewing
Assist in the movement and functioning of the tongue
Small linear depression

47. Secondary palate
An overgrowth of the gingival tissue
Supplies blood to the roots and periodontal ligaments of the interior teeth
Forms the remaining 2/3 of the hard and soft palate uvula
Small yellowish glands on the labial mucosa

48. Incisive Nerve branch
The inner surface of the lips
Trigeminal - facial - glossopharyngeal - hypoglossal
Intervating the anterior teeth and the labial gingiva
Constricts the nasopharyngeal passage and elevates the larynx

49. Occlusion third
A dense tissue covered with mucous membrane that can withstand chewing
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Occlusal surface of the posterior tooth

50. Marginal Ridges
Located in a depressed area between the pillars
An overgrowth of the gingival tissue
Supplies blood to the face and oral cavity
Elevated are of enamel that forms the Mesial and distal borders