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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. Groove
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
Small linear depression
An extension of an unattached gingiva and the tooth
Drains the facial structures beginning near the eye and descending toward the mandible

2. What is the maxillary cuspid known as?
Found near the cementoenamel junction
Tissue fluid surrounding the cell membrane of the odontoblast
A condition where the lower frenum attachment is very short/DDS/frenectomy
The cornerstone of the mouth

3. Cleft Palate
Developmental segment of a tooth
Small curved lines that run parellel to the CEJ
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Lift the hyoid bone and assist in opening the mouth

4. Sublingual Sulcus
Trigeminal - facial - glossopharyngeal - hypoglossal
The ridges that run horizontally across the hard palate behind the incisive papilla
A horseshoe shaped groove that follow the curve of the dental arch
A raised area of tissue laying behind the maxillary central incisors on the hard palate

5. Angle of the Mandible
Shed from the oral cavity
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Triferacated
Where the ramus meets the body of the mandible on the outside border

6. Dentoperiosteal Fiber Groups
Follows the inside of the ramus and the body of the mandible
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Supportive fibers that anchor the tooth to the bone
Cheek bones--the most breakable bone in the body

7. Alveolar Crest
Wearing away of the incisal or occlusal surfaces of the tooth
Two cortical bone plates that come together between each tooth
Second teeth next to central incisors
The layer of dentin that surrounds the pulp

8. When does the maxillary second molar erupt?
12 years
Forms a large cavity above the roots of the maxillary molars
Three bulges on the incisal edge
A bat shaped bone which forms the anterior portion of the skull

9. What is origin and What is insertion?
Outside surface Which is towards the lips
The disc becomes displaced
Origin - fixed point - insertion - movable point
A raised area of tissue laying behind the maxillary central incisors on the hard palate

10. How much saliva is produced daily?
1500 millimeters
Where the ramus meets the body of the mandible on the outside border
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Looking at the border of the tongue

11. Lamina Dura
A line that represents the alveolus bone lining the socket
Disk that acts like a cushion between the temporal bone and the condyloid process
A shallow v-shaped depression located below the bottom of the nose and above the lips
Enamel is thinner - pulp chamber is smaller -

12. Tome's process
Responsible for laying down the enamel matrix into place
Occurs in unusual ways and distorted crowns may appear
Orbicularis oris - buccinator - mentalis - zygomatic major
Located behind the ramus of the mandible and branches into five arteries

13. Develop Mental Groove
Bluish veins that run the length of the tongue
Assist in depressing the mandible and elevating the tongue
Formed by the uniting of lobes during development of crown
Peg shaped crown with a smooth surface

14. Maxillary Sinus
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Synovial fluid
Molaris meaning millstone
Forms a large cavity above the roots of the maxillary molars

15. Rod Core
Inner portion of the enamel rod
Forms after the completion of the apical foramen
The line of demarcation between the attached gingiva and the marginal gingiva
Trigeminal - facial - glossopharyngeal - hypoglossal

16. Mantle Dentin
The first predentin that is formed and matures within the tube
When the dentin is exposed
A line of demarcation between the attached gingiva and alveolar mucosa
The cornerstone of the mouth

17. Alveolus
Second teeth next to central incisors
Third tooth from the midline
Bone that surrounds the root of the tooth
Two weeks thru 8th week

18. Proliferation
Where the ectoderm layer matures into the enamel
Occlusal surface of the posterior tooth
Three cusps/ trifurcated
Synovial fluid

19. Lines of Retzius
To dissolve
Biting edge of the teeth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Incremental lines around the layers of the enamel matrix

20. Mucogingival Junction
A line of demarcation between the attached gingiva and alveolar mucosa
The inner surface of the lips
Act to maintain the gingival integrity of the marginal gingiva
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar

21. What are the 4 maxillary nerve branches?
Pulverizing or chewing surface
Follows the length of the body of the mandible past the last tooth and up to the ramus
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Folds of tissue to the the lingual veins

22. Hard Palate
Maxillary third molar
Band of fibrous tissue which attaches bone to bone
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Cells develop into different tissues

23. Denticion
Inside surface Which is towards the tongue - on anterior teeth
The inner surface of the cheeks
Two weeks thru 8th week
Natural teeth in position

24. Free Gingiva
Substances between cells
The largest of the salivary glands which lie just below and in front of the ear
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
The portion of the tooth that meets the gingiva

25. Palantine Tonsils
The deepest point of the vestibule
What divides the tongue in half and runs from the base to the tip of the tongue
Drains the superficial veins of the face and neck into the subclavian vein
Located in a depressed area between the pillars

26. Odontal Fiber Groups
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Allow flexibility during mastication - speech
Bicuspids

27. What are the intrinsical muscles of the tongue responsible for?
Study of the structure and form of the teeth
Where the ectoderm layer matures into the enamel
Origin of the tooth
Shaping the tongue during speech - mastication and swallowing

28. Supplemental Groove
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Radiates from the developmental groove
Drains the superficial veins of the face and neck into the subclavian vein
When the tissue becomes inflamed

29. Cleft Uvula
Extends from the medial corner of the eye to the nasal cavity
Mildest form of cleft palate
Assist in depressing the mandible and elevating the tongue
4th week

30. Periodontium
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Respiratory system - digestive system and glandular organs
Function to resist rotational forces and tilting
Assist in depressing the mandible and elevating the tongue

31. Convex
Sharp projection on the under surface of the temporal bone
Assist in the movement and functioning of the tongue
To bulge of curve outward
Intervating the anterior teeth and the labial gingiva

32. TMJ bones are bathed In what solution?
Synovial fluid
Hinge motion and gliding movement
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Drains the superficial veins of the face and neck into the subclavian vein

33. External Carotid Artery
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Branches off the inferior alveolar artery before intering the mandibular canal
Supplies blood to the face and oral cavity
Cells that form dentin

34. Sublingual Glands
Convex area on the lingual surface near gingiva
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
Small raised projections where taste buds are located
Bone that surrounds the root of the tooth

35. Sharpey's Fibers
2 small raised folds of tissue where the lingual frenum attaches
Acts as anchors between the alveolar bone and the tooth
Scroll like bones outside the nasal cavaties
Assists in elevating the chin

36. Cyto differentiation
The development of different cells
Small grooves noted on some teeth
Study of prenatal growth and the developing process of an individual
Surface away from the midline

37. Cusp of Caribelli
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Shed from the oral cavity
The deepest point of the vestibule
Vertical groove on the midline of the upper lip

38. Pterygoid plexus of the veins
A junction or center of veins that directly or indirectly drain a vast area
Tissue fluid surrounding the cell membrane of the odontoblast
Teeth will not erupt in proper position
Two weeks thru 8th week

39. Embrasure
Triangular space in the gingival direction when two adjacent teeth are in contact
12 years
Supplies blood to the brain and the eyes
Natural teeth in position

40. Lingual Vein
A line of tissue that extends from the tongue to the floor of the mouth
Drains the floor of the mouth
Appears to be loosely attached - covering the alveolar bone.
4 cusps/ bifurcated

41. Ala of the Nose
Excess dryness of the mouth
Follows the inside of the ramus and the body of the mandible
The outer edge of the nostril
A condition where the lower frenum attachment is very short/DDS/frenectomy

42. Pit
Place where the groove comes together or fissures cross
Digstric - Mylohyoid - stylohyoid - geniohyoid
Forms a large cavity above the roots of the maxillary molars
Developmental segment of a tooth

43. Vestibule Fornix
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Assist in depressing the mandible and elevating the tongue
Elevates the posterior portion of the tongue and narrows the fauces
The deepest point of the vestibule

44. What are the 4 extrinsic muscles of the tongue
The disc becomes displaced
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
A bat shaped bone which forms the anterior portion of the skull
Genioglossus - hyoglossus - styloglossus - palatoglossus

45. Dental Sac
Wearing away of the incisal or occlusal surfaces of the tooth
Interdental ligament
An enclosed area that matures into dentin - cementum and pulp
Lift the hyoid bone and assist in opening the mouth

46. How many cusps/ roots do the maxillary first molars have?
A period of both primary teeth and permeant teeth are in the dentition
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
4/5 cusps/ 3 roots
Molaris meaning millstone

47. How much saliva do the salivary glands produce in 24 hours?
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Folds of tissue to the the lingual veins
2 to 3 pints
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

48. Function of Geneoglossus?
Mastication - aids in speech - influence facial structure - chewing surfaces
Drains the superficial veins of the face and neck into the subclavian vein
Excess bone in the middle of the palate
Retracts or depresses the tongue

49. Fimbriated Folds
Responsible for laying down the enamel matrix into place
Folds of tissue to the the lingual veins
Located in a depressed area between the pillars
Small yellowish glands on the labial mucosa

50. Fetus
Small dark brushes
9 weeks thru birth
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Retracts the tongue and raises the tip of the tongue