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. Pit
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Place where the groove comes together or fissures cross
Inside of the maxillary teeth

2. Duct
The slightly raised line extending down the middle of the hard palate
Supplies blood to the brain and the eyes
Canal or passage for fluid
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

3. How many teeth are in the Primary teeth?
Forms after the completion of the apical foramen
The deepest point of the vestibule
20
Extends from the medial corner of the eye to the nasal cavity

4. What ligament is retained the longest during periodontal disease?
Triferacated
Interdental ligament
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
The connective tissue of the marginal gingiva

5. What is another name for premolars?
Surface away from the midline
Largest of the branches of the external carotid artery; supplies facial structure
Bi-cuspids
Formed by the uniting of lobes during development of crown

6. Function of mylohyoid
Growth from the oral epithelium that gives rise to the tooth buds
Upper arch of the teeth
Assist in depressing the mandible and elevating the tongue
Used to pulverize food

7. Oblique Fiber Group
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Enamel is thinner - pulp chamber is smaller -
Upper arch of the teeth
Resists intrusive forces that try to push the tooth inwards

8. Naso Palatine Nerve
The layer of dentin that surrounds the pulp
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
The inner surface of the lips

9. Maxillary Tuberosity
Three cusps/ trifurcated
A rounded area beyond the last posterior maxillary tooth
Disk that acts like a cushion between the temporal bone and the condyloid process
Occurs in unusual ways and distorted crowns may appear

10. Internal Jugular Vein
Found near the cementoenamel junction
Natural teeth in position
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Joined at the midline and are often referred to as the median Palatine suture

11. Agenesis
Occurs in unusual ways and distorted crowns may appear
Excess bone formations under the tongue on the alvellar bone
Resulting from an imperfect union where the lobes come together
A bony plate covered with keratinized tissue located in the anterior portion of the palate

12. Dentogingival Fiber Groups
Branches off the inferior alveolar artery before intering the mandibular canal
Drains the facial structures beginning near the eye and descending toward the mandible
Inner portion of the enamel rod
Act to maintain the gingival integrity of the marginal gingiva

13. What are the 4 taste senses and where are they located?
The study of the microscopic structure and functions of tissues
The groove below the lower lips that separates the lips from the chin
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Papillae that give the tongue the strawberry effect

14. Xygomatic bones
Upper arch of the teeth
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Cheek bones--the most breakable bone in the body

15. When do the primary teeth begin erupting and are fully erupted?
The mandibular molars
6 months/3years
Teeth after cuspids
Elevates the posterior portion of the tongue and narrows the fauces

16. Angle of the Mandible
Where the ramus meets the body of the mandible on the outside border
Demonstrates a disturbance in the body metabolism
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Portion of the root seen in the oral cavity

17. Morphology
Study of the structure and form of the teeth
Week 12
Small bony projections surrounding the lingual foramen
Primary and permanent

18. How can you tell if someone has cancer by looking at the tongue?
The mandibular first premolar
Excess dryness of the mouth
Looking at the border of the tongue
Draws the hyoid bone superiorly and posteriorly and stabilizes it

19. Xerostomia
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Small yellowish glands on the labial mucosa
Excess dryness of the mouth
Cells that form cementum

20. Mental Protuberance
The tip of the chin
Joined at the midline and are often referred to as the median Palatine suture
4th week
The ridges that run horizontally across the hard palate behind the incisive papilla

21. Primary Dentin
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Occurs in unusual ways and distorted crowns may appear
Retracts or depresses the tongue
Forms the bulk of the tooth

22. How many cusps/ roots do the 2/3rd maxillary molars have?
Papillae that give the tongue the strawberry effect
Where the ramus meets the body of the mandible on the outside border
Small bony projections surrounding the lingual foramen
Three cusps/ trifurcated

23. Cleft Uvula
Mildest form of cleft palate
The development of different cells
Cells that form cementum
Smaller branch that ennervates the soft palate uvula and tonsils

24. Posterior Superior Alveolar Nerve
Constricts the nasopharyngeal passage and elevates the larynx
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Causes a thickening of the cementum around the apex
Slight ridges on the cervical third of certain teeth that extend mesiodistally

25. Furcation
Act to maintain the gingival integrity of the marginal gingiva
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Two weeks thru 8th week
Dividing point of a multi-rooted tooth

26. Lingual Frenum
Excess dryness of the mouth
The largest of the salivary glands which lie just below and in front of the ear
Small yellowish glands on the labial mucosa
A line of tissue that extends from the tongue to the floor of the mouth

27. Dentinal Hypersensitivity
Intervating the anterior teeth and the labial gingiva
Dividing point of a multi-rooted tooth
When the dentin is exposed
Assist in depressing the mandible and elevating the tongue

28. Alveolar Mucosa
Extreme variations from the norm
Allow flexibility during mastication - speech
Drains the Pterygoid plexus of the veins
Mucosa that covers the alveolar bone

29. Mental Nerve Branch
Largest division of the trigeminal nerve
Sharp projection on the under surface of the temporal bone
Inside surface Which is towards the tongue - on anterior teeth
Quarters of the teeth

30. Middle Superior Alveolar Nerve
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Linear elevation of the tooth
Bony projection found on the bottom border of the temporal bone
When the dentin is exposed

31. What is Ankyloglossia and who can treat it / What is the treatment called?
Maxillary third molar
A condition where the lower frenum attachment is very short/DDS/frenectomy
Week 11
Forms the bulk of the tooth

32. Xygote
Looking at the border of the tongue
When cells rapidly increase in number
Two vertical extensions of the mandible
Trigeminal nerve--because it ennervates the maxilla and the mandible

33. Lingual Vein
Palatoglossus - palatopharyngeal
Occurs in unusual ways and distorted crowns may appear
Drains the floor of the mouth
Bicuspids

34. Central Incisor
Inside surface Which is towards the tongue - on anterior teeth
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
A line of demarcation between the attached gingiva and alveolar mucosa
Middle two teeth in the mouth

35. External Oblique Ridge
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Follows the length of the body of the mandible past the last tooth and up to the ramus
Composed of mucosa and surrounds the necks of the teeth
Palatoglossus - palatopharyngeal

36. Occlusion third
Occlusal surface of the posterior tooth
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
32
The mandibular first premolar

37. Odontogenesis
Ligaments and muscles of mastication
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Forms the bulk of the tooth
Origin of the tooth

38. When does the maxillary first molar erupt?
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Cluster of tissue that manufactures and secrets fluid
6 years old
The line of demarcation between the attached gingiva and the marginal gingiva

39. What is saliva made of?
A condition where the lower frenum attachment is very short/DDS/frenectomy
32
H20 - mucin - organic salts and digestive enzymes
4/5 cusps/ 3 roots

40. Lacrimal Bones
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Primitive mouth
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Origin - fixed point - insertion - movable point

41. What are the two muscles of the soft palate?
Two
Palatoglossus - palatopharyngeal
Teeth will not erupt in proper position
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

42. Distal
Surface away from the midline
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
The bone that separates the root on a tooth
Hinge motion and gliding movement

43. Ligament
Trigeminal - facial - glossopharyngeal - hypoglossal
Composed of mucosa and surrounds the necks of the teeth
Stained growth rings in dentin
Band of fibrous tissue which attaches bone to bone

44. Enamel Dysplasia
4th week
When the surface of the teeth becomes grooved
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Occurs in unusual ways and distorted crowns may appear

45. Fossa
Found only in multi-rooted teeth and resists rotational forces
Cells that form dentin
Rounded depression on a tooth
6 months/3years

46. Cuspid
Extends from the medial corner of the eye to the nasal cavity
A pocket formed by the soft tissue of cheeks and gingiva
The area on the crown of the tooth that is nearest the gingival
Third tooth from the midline

47. Mastoid process
Healthy gingival tissue with an orange texture
Bony projection found on the bottom border of the temporal bone
Lower arch of the teeth
When the dentin is exposed

48. How many teeth are in the permanent set of teeth?
32
Located on the inside of the body of the ramus
Bi-cuspids
Calcium salts are deposited into formed tooth

49. What are the 4 extrinsic muscles of the tongue
Genioglossus - hyoglossus - styloglossus - palatoglossus
The fixed attachment of a muscle
The corners of the mouth where the top and bottom lip meet
Set of arches found farther in the back of the throat

50. Gestational period
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Formed by the fibroblast cells and secures the tooth in the socket
Act to maintain the gingival integrity of the marginal gingiva
9 months (5 months ultrasound to tell sex)