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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. Rod Core
Inner portion of the enamel rod
Separation of the upper lip ( 1 of 1000 live births)
Creates the wall of the dentinal tubule
Narrow long enamel tuft

2. What ligament is retained the longest during periodontal disease?
Developmental segment of a tooth
Interdental ligament
Forms after the completion of the apical foramen
Bluish veins that run the length of the tongue

3. Midline
To bulge of curve outward
Middle line of the teeth
Separates the developing oral cavities from the nasal cavities
Draws the hyoid bone superiorly and posteriorly and stabilizes it

4. What is origin and What is insertion?
Linear elevation of the tooth
Aid in attaching the gingiva to the alveolar bone
Origin - fixed point - insertion - movable point
Incremental line indicating trauma of birth

5. Clinical root
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Portion of the root seen in the oral cavity
Initiation of the tooth begins
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

6. Maxillary Sinus
A rounded area beyond the last posterior maxillary tooth
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Forms a large cavity above the roots of the maxillary molars
Teeth will not erupt in proper position

7. Imbracation Lines
Small curved lines that run parellel to the CEJ
Orbicularis oris - buccinator - mentalis - zygomatic major
Trigeminal - facial - glossopharyngeal - hypoglossal
Substances between cells

8. What are the 12 landmarks of the oral cavity?

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9. Cingulum
Convex area on the lingual surface near gingiva
Tissue covering the alveolar processes
Forms into the inner lining of the oral cavitiy and enamel of the teeth
A line of tissue that extends from the tongue to the floor of the mouth

10. Papilla
Small raised projections where taste buds are located
When the tissue becomes inflamed
Synovial fluid
Healthy gingival tissue with an orange texture

11. Mucosa
When the tissue becomes inflamed
Lining covers inside of the oral cavity
Inside of the maxillary teeth
Drains the floor of the mouth

12. Linea Alba
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Where the ramus meets the body of the mandible on the outside border
Occlusal surface of the posterior tooth
Duct located on the parotid papilla

13. Contact Area
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Responsible for laying down the enamel matrix into place
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Where the proximal sides of two teeth come together and touch

14. Odontogenesis
The mandibular first premolar
A pocket formed by the soft tissue of cheeks and gingiva
Quarters of the teeth
Origin of the tooth

15. What is the most common problem with TMJ
The disc becomes displaced
The gingiva in the floor of the gingival sulcus that attaches to the enamel
The mandibular first premolar
Papillae that give the tongue the strawberry effect

16. Dentogingival Fiber Groups
Bicuspids
Sharp projection on the under surface of the temporal bone
Act to maintain the gingival integrity of the marginal gingiva
Papillae that give the tongue the strawberry effect

17. Primary palate
Separates the developing oral cavities from the nasal cavities
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
To bulge of curve outward
The layer of dentin that surrounds the pulp

18. Embryo
Two weeks thru 8th week
Two vertical extensions of the mandible
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Molars

19. How many teeth are in the permanent set of teeth?
The largest of the salivary glands which lie just below and in front of the ear
Small curved lines that run parellel to the CEJ
The layer of dentin that surrounds the pulp
32

20. Attrition
Portion of the root seen in the oral cavity
Wearing away of the incisal or occlusal surfaces of the tooth
A dense tissue covered with mucous membrane that can withstand chewing
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

21. Maxillary Tuberosity
Primitive mouth
Largest of the branches of the external carotid artery; supplies facial structure
A rounded area beyond the last posterior maxillary tooth
Band of fibrous tissue which attaches bone to bone

22. Cervical line
Tooth emerges from gum tissue and becomes visible
Divides the crown and the root
The mandibular first premolar
Corners of the mouth

23. Lingual Nerve Branch
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Supplies blood to the brain and the eyes
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 connective tissue of the marginal gingiva

24. Stippled
Three bulges on the incisal edge
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Healthy gingival tissue with an orange texture
2 to 3 pints

25. Mesenchyme Tissue
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Primary embryonic mesoderm layer that develops during the morpho differentiation period
The corners of the mouth where the top and bottom lip meet
Tissue fluid surrounding the cell membrane of the odontoblast

26. Buccal Mucosa
A flap of tissue on the on the buccal mucosa
The inner surface of the cheeks
Demonstrates a disturbance in the body metabolism
Resist rotational forces and hold teeth in inter-proximal contact

27. Anterior Alveolar Nerve
9 weeks thru birth
Drains the facial structures beginning near the eye and descending toward the mandible
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
The area on the crown of the tooth that is nearest the gingival

28. Dentoperiosteal Fiber Groups
Supportive fibers that anchor the tooth to the bone
Functions the same as the alveolar cfg; originate in alveolar bone
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Place where the groove comes together or fissures cross

29. What are the 4 maxillary nerve branches?
Three bulges on the incisal edge
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Enamel forming cells
Second teeth next to central incisors

30. Stomedeum
Primitive mouth
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
6 months/3years
Bicuspids

31. Purpose of premolars
Scroll like bones outside the nasal cavaties
Pulls the hyoid bone and the tongue anteriorly
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Used to pulverize food

32. Ectoderm
Follows the inside of the ramus and the body of the mandible
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Cells that form dentin
The portion of the tooth that meets the gingiva

33. Which molar contains the cusp of Caribelli?
Forms into dentin - cementum and pulp of the teeth
Pulverizing or chewing surface
Maxillary first molar
The cornerstone of the mouth

34. Lamina Dura
A line that represents the alveolus bone lining the socket
Cells that form cementum
Covers muscle tissue in the posterior portion of the palate
Portion of the lips that are red

35. Philtrum
A shallow v-shaped depression located below the bottom of the nose and above the lips
What divides the tongue in half and runs from the base to the tip of the tongue
4th week
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

36. Foliate Papillae
The inner surface of the lips
Raised vertical folds of tissue on the lateral border of the tongue
Small head - low nasal bridge - thin upper lip - small mandible
When the tissue becomes inflamed

37. Lingual Vein
Pulverizing or chewing surface
Drains the floor of the mouth
What divides the tongue in half and runs from the base to the tip of the tongue
A projection that extends off the back of the soft palate

38. Function of Geniohyoid
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Pulls the hyoid bone and the tongue anteriorly
Functions the same as the alveolar cfg; originate in alveolar bone
The disc becomes displaced

39. What are the 2 sets of teeth?
Chewing and swallowing food
Primary and permanent
Hinge motion and gliding movement
Covering over the enamel that is left over from the epithelium ameloblasts

40. Gestational period
Bone that surrounds the root of the tooth
Extends from the mucogingival junction to the gingival groove
Bifurcated/ 5 cusps
9 months (5 months ultrasound to tell sex)

41. Lingual Veins
A bony projection that separates each socket
Genioglossus - hyoglossus - styloglossus - palatoglossus
Papillae that give the tongue the strawberry effect
Bluish veins that run the length of the tongue

42. Lines of Retzius
Incremental lines around the layers of the enamel matrix
When cells rapidly increase in number
Bicuspids
Layers of tooth tissue become calcified

43. Sharpey's Fibers
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Acts as anchors between the alveolar bone and the tooth
9 months (5 months ultrasound to tell sex)
Layers of tooth tissue become calcified

44. Denticion
Natural teeth in position
Tissue fluid surrounding the cell membrane of the odontoblast
Digstric - Mylohyoid - stylohyoid - geniohyoid
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

45. Sulingual Folds
Bone that surrounds the root of the tooth
A projection that extends off the back of the soft palate
1500 millimeters
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

46. Agenesis
Occurs in unusual ways and distorted crowns may appear
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
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Origin - fixed point - insertion - movable point

47. Alveologingival Fiber Groups
Biting edge of the teeth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Aid in attaching the gingiva to the alveolar bone
Draws down the mandible and corners of the mouth

48. Peritubular Dentin
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Elevates the posterior portion of the tongue and narrows the fauces
Creates the wall of the dentinal tubule
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

49. Pit
Permeante teeth replace the primary teeth
Place where the groove comes together or fissures cross
Formed by the fibroblast cells and secures the tooth in the socket
2 small raised folds of tissue where the lingual frenum attaches

50. What are the characteristics of permanent teeth?
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Cells develop into different tissues
Joined at the midline and are often referred to as the median Palatine suture
Enamel is thinner - pulp chamber is smaller -