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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. Histology
The study of the microscopic structure and functions of tissues
9 weeks thru birth
When the surface of the teeth becomes grooved
The slightly raised line extending down the middle of the hard palate

2. lst and second premolars
The space between the unattached gingiva and the tooth
Teeth after cuspids
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Supplies blood to the roots and periodontal ligaments of the molars and premolars

3. Duct
Origin of the tooth
Canal or passage for fluid
Mildest form of cleft palate
Portion covered with cementum

4. Enamel Lamellae
Drains the superficial veins of the face and neck into the subclavian vein
Study of the structure and form of the teeth
Narrow long enamel tuft
Bony projection found on the bottom border of the temporal bone

5. Anterior Alveolar Nerve
Molaris meaning millstone
9 weeks thru birth
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

6. If Palate not fused
Small yellowish glands on the labial mucosa
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
When the tissue becomes inflamed
Teeth will not erupt in proper position

7. TMJ bones are bathed In what solution?
Mastication - aids in speech - influence facial structure - chewing surfaces
Synovial fluid
9 months (5 months ultrasound to tell sex)
Secrete saliva to assist in process of digestion

8. Occlusion third
Occlusal surface of the posterior tooth
Extreme variations from the norm
Follows the length of the body of the mandible past the last tooth and up to the ramus
Wings of the sphenoid bone

9. Gingiva
Extends from the mucogingival junction to the gingival groove
A dense tissue covered with mucous membrane that can withstand chewing
Where the ectoderm layer matures into the enamel
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

10. Histo Differentiation
Bone that surrounds the root of the tooth
The corners of the mouth where the top and bottom lip meet
Cells develop into different tissues
A line of demarcation between the attached gingiva and alveolar mucosa

11. Lingual Vein
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Maxillary third molar
Drains the floor of the mouth
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip

12. Xygote
Respiratory system - digestive system and glandular organs
Smaller branch that ennervates the soft palate uvula and tonsils
When cells rapidly increase in number
The line of demarcation between the attached gingiva and the marginal gingiva

13. Mental Nerve Branch
Occlusal surface of the posterior tooth
Inner portion of the enamel rod
Largest division of the trigeminal nerve
Layers of tooth tissue become calcified

14. Sublingual Glands
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
The portion of the tooth that meets the gingiva
An overgrowth of the gingival tissue
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

15. Incisive Nerve branch
Lower arch of the teeth
A shallow v-shaped depression located below the bottom of the nose and above the lips
Intervating the anterior teeth and the labial gingiva
Small head - low nasal bridge - thin upper lip - small mandible

16. Anatomical root
Portion covered with cementum
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Arteries supplying blood to most of the head and the neck
The largest of three openings located in the posterior region of the hard palate

17. Landmarks
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Forms a large cavity above the roots of the maxillary molars
Formed by the fibroblast cells and secures the tooth in the socket

18. Which molar is the wisdom tooth
Maxillary third molar
A condition where the lower frenum attachment is very short/DDS/frenectomy
Incremental line indicating trauma of birth
Composed of mucosa and surrounds the necks of the teeth

19. Function of Hyoglossus
The internal surface at the center of the mandible
Depresses the tongue
Acts as anchors between the alveolar bone and the tooth
Assists in elevating the chin

20. Mandible Arch
Where the ramus meets the body of the mandible on the outside border
Bi-cuspids
Papillae that give the tongue the strawberry effect
Lower arch of the teeth

21. Function of Palatopharyngeal
Pulverizing or chewing surface
Triangular space in the gingival direction when two adjacent teeth are in contact
Corners of the mouth
Constricts the nasopharyngeal passage and elevates the larynx

22. Intercellular Substances
The line of demarcation between the attached gingiva and the marginal gingiva
Substances between cells
Lining covers inside of the oral cavity
Clear fluid secreted by the salivary and mucous glands throughout the mouth

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

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24. Circumpulpal Dentin
Lower arch of the teeth
The fixed attachment of a muscle
Second teeth next to central incisors
The layer of dentin that surrounds the pulp

25. Vermilion Border
Act to maintain the gingival integrity of the marginal gingiva
Portion of the lips where the skin meets the vermilion zone
Dentin found between the tubules
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

26. What ligament is retained the longest during periodontal disease?
Acts as anchors between the alveolar bone and the tooth
The outer edge of the nostril
Interdental ligament
Function to resist rotational forces and tilting

27. What are the four main functions of deciduous teeth?
The disc becomes displaced
Bicuspids
Mastication - aids in speech - influence facial structure - chewing surfaces
Resulting from an imperfect union where the lobes come together

28. Greater Palatine Foramen
The largest of three openings located in the posterior region of the hard palate
A horseshoe shaped groove that follow the curve of the dental arch
Forms the bulk of the tooth
Divides the crown and the root

29. Maxillary Nerve Branch
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Linear elevation of the tooth
1500 millimeters

30. Sublingual Caruncles
Cells that form dentin
Formed by the fibroblast cells and secures the tooth in the socket
2 small raised folds of tissue where the lingual frenum attaches
The deepest point of the vestibule

31. Stenson's Duct
Formed by the fibroblast cells and secures the tooth in the socket
Duct located on the parotid papilla
Resulting from an imperfect union where the lobes come together
Pointed or rounded mounds on the crown of the tooth

32. Nasmyths Membrane
Forms a large cavity above the roots of the maxillary molars
A flap of tissue on the on the buccal mucosa
To dissolve
Covering over the enamel that is left over from the epithelium ameloblasts

33. How many teeth are in the permanent set of teeth?
32
Forms into the inner lining of the oral cavitiy and enamel of the teeth
The inner surface of the cheeks
Small grooves noted on some teeth

34. Perikymata
Convex area on the lingual surface near gingiva
An overgrowth of the gingival tissue
Follows the inside of the ramus and the body of the mandible
Small grooves noted on some teeth

35. Philtrum
Draws down the mandible and corners of the mouth
Separation of the upper lip ( 1 of 1000 live births)
Vertical groove on the midline of the upper lip
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

36. Mesenchyme Tissue
Tubules that pass through the entire surface of the dentin
Portion of the lips that are red
Surface away from the midline
Primary embryonic mesoderm layer that develops during the morpho differentiation period

37. Linea Alba
Raised vertical folds of tissue on the lateral border of the tongue
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Intervating the anterior teeth and the labial gingiva
9 months (5 months ultrasound to tell sex)

38. What is saliva made of?
A triangular area located behind the last molar
Located behind the ramus of the mandible and branches into five arteries
Raised vertical folds of tissue on the lateral border of the tongue
H20 - mucin - organic salts and digestive enzymes

39. Convex
Portion covered with cementum
Canal or passage for fluid
To bulge of curve outward
Layers of tooth tissue become calcified

40. Cervical Third
Cluster of tissue that manufactures and secrets fluid
H20 - mucin - organic salts and digestive enzymes
Small yellowish glands on the labial mucosa
The area on the crown of the tooth that is nearest the gingival

41. Peritubular Dentin
Incremental lines around the layers of the enamel matrix
Creates the wall of the dentinal tubule
Lift the hyoid bone and assist in opening the mouth
Portion covered with cementum

42. What are the 4 cranial nerves that ennervate the face and oral cavity
Trigeminal - facial - glossopharyngeal - hypoglossal
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
H20 - mucin - organic salts and digestive enzymes

43. Alveolar Mucosa
Follows the length of the body of the mandible past the last tooth and up to the ramus
Peg shaped crown with a smooth surface
Appears to be loosely attached - covering the alveolar bone.
Bone that surrounds the root of the tooth

44. Horizontal Fiber Group
Dentin found between the tubules
Trigeminal - facial - glossopharyngeal - hypoglossal
10 days
Functions the same as the alveolar cfg; originate in alveolar bone

45. Common Carotid
Dividing point of a multi-rooted tooth
A line of tissue that extends from the tongue to the floor of the mouth
Where the ramus meets the body of the mandible on the outside border
Arteries supplying blood to most of the head and the neck

46. What are the only permeant teeth that are not succedaneous?
Contains six branches that supply blood to the pharynx muscles - soft palate tonsils - the posterior of the tongue - sub mandibular gland - muscles of the face - nasal septom - nose and the eyelids
Molars
6 years old
H20 - mucin - organic salts and digestive enzymes

47. Lingual Veins
Bluish veins that run the length of the tongue
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Cut - tear - and grind food
Resists forces that try to pull the tooth outward

48. Parotid glands
Papillae that give the tongue the strawberry effect
A shallow v-shaped depression located below the bottom of the nose and above the lips
Small raised projections where taste buds are located
The largest of the salivary glands which lie just below and in front of the ear

49. Soft Palate
Second teeth next to central incisors
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Mucosa that covers the alveolar bone
Covers muscle tissue in the posterior portion of the palate

50. What are the four major muscles of facial expression
Synovial fluid
Orbicularis oris - buccinator - mentalis - zygomatic major
Lower arch of the teeth
A projection that extends off the back of the soft palate