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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. Pterygoid plexus of the veins
A junction or center of veins that directly or indirectly drain a vast area
Origin - fixed point - insertion - movable point
Papillae that give the tongue the strawberry effect
Calcified masses of dentin

2. Cemental Spurs
Inner portion of the enamel rod
Genioglossus - hyoglossus - styloglossus - palatoglossus
Found near the cementoenamel junction
The slightly raised line extending down the middle of the hard palate

3. Marginal GIngiva
(free gingiva) surrounds the teeth
Papillae that give the tongue the strawberry effect
Triferacated
The ridges that run horizontally across the hard palate behind the incisive papilla

4. Vestibule Fornix
Incremental line indicating trauma of birth
The outer edge of the nostril
Lower arch of the teeth
The deepest point of the vestibule

5. Alveolar Crest Fiber Group
Disk that acts like a cushion between the temporal bone and the condyloid process
Function to resist rotational forces and tilting
Canal or passage for fluid
Fifth cusp located on the mesial surface lingual surface of maxillary first molars

6. Function of Palatoglossus
Trigeminal nerve--because it ennervates the maxilla and the mandible
When the surface of the teeth becomes grooved
Elevates the posterior portion of the tongue and narrows the fauces
Occlusal surface of the posterior tooth

7. Incisal third
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Retracts or depresses the tongue
Origin of the tooth
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

8. Mastoid process
A faint line going from the ala of the nose to the corner of the mouth
Bony projection found on the bottom border of the temporal bone
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Largest facial bone with two sections joined at the median suture

9. Resonance
Wearing away of the incisal or occlusal surfaces of the tooth
The groove below the lower lips that separates the lips from the chin
Full deep rich sound in nasal cavity
Inside of the maxillary teeth

10. Odontogenesis
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Conception thru the first two weeks
Compact bone plate of the facial and lingual surfaces
Origin of the tooth

11. Mental Nerve Branch
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Raised vertical folds of tissue on the lateral border of the tongue
Largest division of the trigeminal nerve
Developmental segment of a tooth

12. What is the purpose of saliva?
Clear fluid secreted by the salivary and mucous glands throughout the mouth
10 days
Divides the crown and the root
To lubricate the oral cavity and to moisten food

13. Glenoid Fossa
Oval depression of temporal bone in condyloid process
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Calcified masses of dentin
Aid in attaching the gingiva to the alveolar bone

14. Convex
Middle line of the teeth
To bulge of curve outward
Radiates from the developmental groove
Clear fluid secreted by the salivary and mucous glands throughout the mouth

15. Gingiva
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Week 12
Smaller branch that ennervates the soft palate uvula and tonsils
Composed of mucosa and surrounds the necks of the teeth

16. Filiform Papillae
Week 11
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
A faint line going from the ala of the nose to the corner of the mouth

17. Hard Palate
Largest of the branches of the external carotid artery; supplies facial structure
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Small raised projections where taste buds are located
Small grooves noted on some teeth

18. Incisive Arteries
Oval structures that are located on the dorsal surface of the tongue
9 months (5 months ultrasound to tell sex)
Supplies blood to the roots and periodontal ligaments of the interior teeth
Glands the size of a walnut that lie on the inside of the mandible and empty saliva into the mouth thru the Wharton's duct

19. Contact Area
Two
A flap of tissue on the on the buccal mucosa
Shed from the oral cavity
Where the proximal sides of two teeth come together and touch

20. When do the tooth buds appear?
Week 11
Enamel forming cells
Forms the remaining 2/3 of the hard and soft palate uvula
Bony projection found on the bottom border of the temporal bone

21. Mesial
Calcium salts are deposited into formed tooth
Surface towards the midline
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

22. Inferior Nasal Conchae
Cheek bones--the most breakable bone in the body
Wearing away of the incisal or occlusal surfaces of the tooth
Scroll like bones outside the nasal cavaties
Portion covered with cementum

23. What are the four major muscles of facial expression
Orbicularis oris - buccinator - mentalis - zygomatic major
Two cortical bone plates that come together between each tooth
Developmental segment of a tooth
Lift the hyoid bone and assist in opening the mouth

24. Epithelial Attachment
Occurs in unusual ways and distorted crowns may appear
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Resists forces that try to pull the tooth outward
Enamel forming cells

25. Uvula
Vertical groove on the midline of the upper lip
A projection that extends off the back of the soft palate
Resulting from an imperfect union where the lobes come together
Bone that surrounds the root of the tooth

26. What are the two ways the TMJs move?
Covers muscle tissue in the posterior portion of the palate
Enamel forming cells
Hinge motion and gliding movement
Formed by the uniting of lobes during development of crown

27. Lobes
(free gingiva) surrounds the teeth
Retracts or depresses the tongue
A line that represents the alveolus bone lining the socket
Developmental segment of a tooth

28. Attrition
Portion of the lips that are red
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Wearing away of the incisal or occlusal surfaces of the tooth
Follows the length of the body of the mandible past the last tooth and up to the ramus

29. Anterior Alveolar Nerve
Two
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Wearing away of the incisal or occlusal surfaces of the tooth
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip

30. Dentinal Tubules
Tubules that pass through the entire surface of the dentin
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Curve outward
Function to resist rotational forces and tilting

31. How many cusps/ roots do the 2/3rd mandibular molars have?
4 cusps/ bifurcated
The portion of the tooth that meets the gingiva
Cut - tear - and grind food
Tubules that pass through the entire surface of the dentin

32. Mucogingival Junction
A line of demarcation between the attached gingiva and alveolar mucosa
Canal or passage for fluid
Forms a large cavity above the roots of the maxillary molars
A raised area of tissue laying behind the maxillary central incisors on the hard palate

33. Torus Mandibularis
The teeth located at the back of the mouth
Excess bone formations under the tongue on the alvellar bone
Enamel forming cells
10 days

34. Furcation
Dividing point of a multi-rooted tooth
Enamel is thinner - pulp chamber is smaller -
A projection that extends off the back of the soft palate
Supportive fibers that anchor the tooth to the bone

35. Histology
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Permeante teeth replace the primary teeth
Digstric - Mylohyoid - stylohyoid - geniohyoid
The study of the microscopic structure and functions of tissues

36. Cementoblast
32
Three bulges on the incisal edge
Cells that form cementum
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

37. Dental Lamina
Demonstrates a disturbance in the body metabolism
Growth from the oral epithelium that gives rise to the tooth buds
Supplies blood to the roots and periodontal ligaments of the interior teeth
Located behind the ramus of the mandible and branches into five arteries

38. Styloid Process
Formed by the fibroblast cells and secures the tooth in the socket
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Sharp projection on the under surface of the temporal bone
Inside surface Which is towards the tongue - on anterior teeth

39. Mental Protuberance
Largest division of the trigeminal nerve
6 months/3years
The tip of the chin
2 small raised folds of tissue where the lingual frenum attaches

40. Contour Lines of Owen
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Two
Demonstrates a disturbance in the body metabolism
Vertical groove on the midline of the upper lip

41. Secondary Dentin
A period of both primary teeth and permeant teeth are in the dentition
Forms after the completion of the apical foramen
Forms into dentin - cementum and pulp of the teeth
Resists intrusive forces that try to push the tooth inwards

42. Articular Disc
Calcium salts are deposited into formed tooth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Indented
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

43. What are the intrinsical muscles of the tongue responsible for?
Rounded depression on a tooth
Assist in the movement and functioning of the tongue
Extends from the medial corner of the eye to the nasal cavity
Shaping the tongue during speech - mastication and swallowing

44. External Jugular Vein
Drains the superficial veins of the face and neck into the subclavian vein
The line of demarcation between the attached gingiva and the marginal gingiva
Largest of the branches of the external carotid artery; supplies facial structure
4 cusps/ bifurcated

45. Function of Styloglossus
Portion of the root seen in the oral cavity
Oval depression of temporal bone in condyloid process
Pointed or rounded mounds on the crown of the tooth
Retracts the tongue and raises the tip of the tongue

46. What kind of root does the maxillary first molar have?
Small linear depression
Canal or passage for fluid
The inner surface of the lips
Triferacated

47. Stenson's Duct
The mandibular molars
Duct located on the parotid papilla
Creates the wall of the dentinal tubule
Intervating the anterior teeth and the labial gingiva

48. Occlusion third
The development of different cells
Initiation of the tooth begins
Occlusal surface of the posterior tooth
A junction or center of veins that directly or indirectly drain a vast area

49. Lingual Vein
Drains the facial structures beginning near the eye and descending toward the mandible
Creates the wall of the dentinal tubule
Drains the floor of the mouth
Supplies blood to the roots and periodontal ligaments of the interior teeth

50. Gestational period
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
The layer of dentin that surrounds the pulp
Cheek bones--the most breakable bone in the body
9 months (5 months ultrasound to tell sex)