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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.
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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. What is the function of the buccle nerve branch?
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Inner portion of the enamel rod
Orbicularis oris - buccinator - mentalis - zygomatic major
Retracts the tongue and raises the tip of the tongue

2. External Oblique Ridge
Constricts the nasopharyngeal passage and elevates the larynx
Follows the length of the body of the mandible past the last tooth and up to the ramus
The largest of the salivary glands which lie just below and in front of the ear
Pointed or rounded mounds on the crown of the tooth

3. Lingual Foramen
Resists forces that try to pull the tooth outward
Occurs in unusual ways and distorted crowns may appear
The internal surface at the center of the mandible
Vertical groove on the midline of the upper lip

4. Cyto differentiation
The development of different cells
Looking at the border of the tongue
What divides the tongue in half and runs from the base to the tip of the tongue
Narrow long enamel tuft

5. Buccal Mucosa
The teeth located at the back of the mouth
Pulverizing or chewing surface
Hinge motion and gliding movement
The inner surface of the cheeks

6. Primary palate
The study of the microscopic structure and functions of tissues
Separates the developing oral cavities from the nasal cavities
Of or pertaining to area surrounding naval cavity
No bicuspids/ no 3rd molars

7. What is the purpose of permanent teeth?
A small projection in the middle of the upper lip
Extends from the mucogingival junction to the gingival groove
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Cut - tear - and grind food

8. Palatine Bones
Trigeminal - facial - glossopharyngeal - hypoglossal
Band of fibrous tissue which attaches muscle to bone
Joined at the midline and are often referred to as the median Palatine suture
Cluster of tissue that manufactures and secrets fluid

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

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10. Dental Lamina
Growth from the oral epithelium that gives rise to the tooth buds
Supplies blood to the brain and the eyes
A projection that extends off the back of the soft palate
Excess dryness of the mouth

11. Ameloblast
Occlusal surface of the posterior tooth
Supplies blood to the roots and periodontal ligaments of the interior teeth
Two cortical bone plates that come together between each tooth
Enamel forming cells

12. Function of Styloglossus
Retracts the tongue and raises the tip of the tongue
Extends from the medial corner of the eye to the nasal cavity
Oval structures that are located on the dorsal surface of the tongue
(free gingiva) surrounds the teeth

13. Odontal Fiber Groups
Small head - low nasal bridge - thin upper lip - small mandible
Allow flexibility during mastication - speech
Occlusal surface of the posterior tooth
(free gingiva) surrounds the teeth

14. Neonatal line
The mandibular molars
Branches off the inferior alveolar artery before intering the mandibular canal
Bluish veins that run the length of the tongue
Incremental line indicating trauma of birth

15. How much saliva is produced daily?
1500 millimeters
Folds of tissue that extend horizontally from the uvula to the base of the tongue
4th week
Origin - fixed point - insertion - movable point

16. Furcation
Secrete saliva to assist in process of digestion
Covering over the enamel that is left over from the epithelium ameloblasts
Cells that form dentin
Dividing point of a multi-rooted tooth

17. Pit
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Surface away from the midline
Place where the groove comes together or fissures cross

18. What is the latin word for molar?
Molaris meaning millstone
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
Forms the remaining 2/3 of the hard and soft palate uvula
Two cortical bone plates that come together between each tooth

19. Alveolar Crest Fiber Group
Function to resist rotational forces and tilting
Drains the facial structures beginning near the eye and descending toward the mandible
Covers muscle tissue in the posterior portion of the palate
Elevates the posterior portion of the tongue and narrows the fauces

20. Cingulum
Convex area on the lingual surface near gingiva
Enamel forming cells
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Incremental line indicating trauma of birth

21. Lesser Palatine Nerve
Bone that surrounds the root of the tooth
Quarters of the teeth
Smaller branch that ennervates the soft palate uvula and tonsils
Resulting from an imperfect union where the lobes come together

22. What is the maxillary cuspid known as?
Incremental line indicating trauma of birth
Surface away from the midline
The cornerstone of the mouth
Separation of the upper lip ( 1 of 1000 live births)

23. What are the only permeant teeth that are not succedaneous?
A dense tissue covered with mucous membrane that can withstand chewing
Molars
Aid in attaching the gingiva to the alveolar bone
Enamel forming cells

24. Imbracation Lines
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Where the proximal sides of two teeth come together and touch
Small curved lines that run parellel to the CEJ
Smaller branch that ennervates the soft palate uvula and tonsils

25. Ectoderm
Functions the same as the alveolar cfg; originate in alveolar bone
Platysma - trapezius - sternocleidomastoid
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Duct located on the parotid papilla

26. Mamelons
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Enamel is thinner - pulp chamber is smaller -
6 years old
Three bulges on the incisal edge

27. Embryo
The fixed attachment of a muscle
Wearing away of the incisal or occlusal surfaces of the tooth
Two weeks thru 8th week
Forms the bulk of the tooth

28. Dental Sac
4 cusps/ bifurcated
An enclosed area that matures into dentin - cementum and pulp
A horseshoe shaped groove that follow the curve of the dental arch
Portion of the root seen in the oral cavity

29. Morpho differentiation
The line of demarcation between the attached gingiva and the marginal gingiva
The development of different forms
Enamel forming cells
20

30. Function of Sternocleidomastoid
Assist in depressing the mandible and elevating the tongue
Assists in elevating the chin
A line that represents the alveolus bone lining the socket
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface

31. What is the purpose of saliva?
4th week
Bi-cuspids
Appears to be loosely attached - covering the alveolar bone.
To lubricate the oral cavity and to moisten food

32. Cleft Uvula
Peg shaped crown with a smooth surface
Interdental ligament
Mildest form of cleft palate
12 years

33. Landmarks
Divides the crown and the root
The slightly raised line extending down the middle of the hard palate
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Where the ectoderm layer matures into the enamel

34. Fimbriated Folds
Largest facial bone with two sections joined at the median suture
Teeth will not erupt in proper position
Intervating the anterior teeth and the labial gingiva
Folds of tissue to the the lingual veins

35. Cemental Spurs
Found near the cementoenamel junction
Drains the maxiallary artery and superficial temporal arteries
Forms into dentin - cementum and pulp of the teeth
Permeante teeth replace the primary teeth

36. Angle of the Mandible
The development of different tissues
Sharp projection on the under surface of the temporal bone
Growth from the oral epithelium that gives rise to the tooth buds
Where the ramus meets the body of the mandible on the outside border

37. Peritubular Dentin
When the dentin is exposed
Bicuspids
A triangular area located behind the last molar
Creates the wall of the dentinal tubule

38. Mental Nerve Branch
Forms a large cavity above the roots of the maxillary molars
A rounded area beyond the last posterior maxillary tooth
Largest division of the trigeminal nerve
Forms the remaining 2/3 of the hard and soft palate uvula

39. What are the 4 maxillary nerve branches?
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Sharp projection on the under surface of the temporal bone
Oval structures that are located on the dorsal surface of the tongue
The inner surface of the lips

40. Pulp Stones
Origin - fixed point - insertion - movable point
Calcified masses of dentin
An enclosed area that matures into dentin - cementum and pulp
To bulge of curve outward

41. Pterygoid Artery
Excess bone in the middle of the palate
Tissue covering the alveolar processes
Raised vertical folds of tissue on the lateral border of the tongue
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

42. What are the extrinsic muscles of the tongue responsible for?
Assist in the movement and functioning of the tongue
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
An overgrowth of the gingival tissue
Cells that form cementum

43. What is the longest tooth in the mandibular arch?
The mandibular first premolar
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
A bony projection that separates each socket

44. Palatine Raphe
Draws down the mandible and corners of the mouth
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
The slightly raised line extending down the middle of the hard palate
Pointed or rounded mounds on the crown of the tooth

45. Mesoderm
When cells rapidly increase in number
Forms into dentin - cementum and pulp of the teeth
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Fleshy elevation under the tongue

46. Mandibular Artery
Quarters of the teeth
9 months (5 months ultrasound to tell sex)
A pocket formed by the soft tissue of cheeks and gingiva
Located behind the ramus of the mandible and branches into five arteries

47. Retro Mandibular Vein
Second teeth next to central incisors
Primitive mouth
Lift the hyoid bone and assist in opening the mouth
Drains the maxiallary artery and superficial temporal arteries

48. Gland
Calcium salts are deposited into formed tooth
Cluster of tissue that manufactures and secrets fluid
Causes a thickening of the cementum around the apex
20

49. Succedaneous teeth
Permeante teeth replace the primary teeth
Excess dryness of the mouth
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Separation of the upper lip ( 1 of 1000 live births)

50. Horizontal Fiber Group
Cells that form dentin
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Functions the same as the alveolar cfg; originate in alveolar bone
Incremental lines around the layers of the enamel matrix