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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 are the eight landmarks of the face?
Tubules that pass through the entire surface of the dentin
Aid in attaching the gingiva to the alveolar bone
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Trigeminal - facial - glossopharyngeal - hypoglossal

2. Xygomatic bones
Cheek bones--the most breakable bone in the body
Resist rotational forces and hold teeth in inter-proximal contact
Forms the remaining 2/3 of the hard and soft palate uvula
Substances between cells

3. Vermilion Zone
Constricts the nasopharyngeal passage and elevates the larynx
Incremental line indicating trauma of birth
Orbicularis oris - buccinator - mentalis - zygomatic major
Portion of the lips that are red

4. Lesser Palatine Nerve
Smaller branch that ennervates the soft palate uvula and tonsils
Set of arches found farther in the back of the throat
Forms after the completion of the apical foramen
To dissolve

5. Sharpey's Fibers
Branches off the inferior alveolar artery before intering the mandibular canal
To bulge of curve outward
Acts as anchors between the alveolar bone and the tooth
Primary embryonic mesoderm layer that develops during the morpho differentiation period

6. Deep Facial Veins
Creates the wall of the dentinal tubule
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Scroll like bones outside the nasal cavaties

7. Succedaneous teeth
Shed from the oral cavity
Permeante teeth replace the primary teeth
Convex area on the lingual surface near gingiva
Used to pulverize food

8. Lacrimal Bones
Cut - tear - and grind food
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Inner portion of the enamel rod
Portion of the lips that are red

9. Secondary Dentin
Permeante teeth replace the primary teeth
Forms after the completion of the apical foramen
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Papillae that give the tongue the strawberry effect

10. Interdental Ligament Group
Sharp projection on the under surface of the temporal bone
Mildest form of cleft palate
Resist rotational forces and hold teeth in inter-proximal contact
Ligaments and muscles of mastication

11. Marginal GIngiva
Platysma - trapezius - sternocleidomastoid
(free gingiva) surrounds the teeth
Healthy gingival tissue with an orange texture
Follows the inside of the ramus and the body of the mandible

12. Attached Gingiva
Extends from the mucogingival junction to the gingival groove
Third tooth from the midline
Bifurcated/ 5 cusps
Supplies blood to the face and oral cavity

13. Mylohyoid Nerve Branch
Trigeminal - facial - glossopharyngeal - hypoglossal
Band of fibrous tissue which attaches muscle to bone
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Interdental ligament

14. Posterior Teeth
Corners of the mouth
Forms into dentin - cementum and pulp of the teeth
Cells From which connective tissue evolve
The teeth located at the back of the mouth

15. Naso Palatine Nerve
Cells develop into different tissues
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Cheek bones--the most breakable bone in the body
Small grooves noted on some teeth

16. What are the characteristics of permanent teeth?
Scroll like bones outside the nasal cavaties
Enamel is thinner - pulp chamber is smaller -
The tip of the chin
Initiation of the tooth begins

17. Posterior Superior Alveolar Nerve
Separation of the upper lip ( 1 of 1000 live births)
Opening in the mouth below the orbit on the maxillary bone
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Tissue covering the alveolar processes

18. Lingual Nerve Branch
Found only in multi-rooted teeth and resists rotational forces
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
Radiates from the developmental groove

19. Parotid Papilla
Creates the wall of the dentinal tubule
A flap of tissue on the on the buccal mucosa
Retracts the tongue and raises the tip of the tongue
Mildest form of cleft palate

20. Alveologingival Fiber Groups
No bicuspids/ no 3rd molars
To lubricate the oral cavity and to moisten food
Aid in attaching the gingiva to the alveolar bone
The fixed attachment of a muscle

21. Agenesis
Drains the maxiallary artery and superficial temporal arteries
Located in a depressed area between the pillars
Functions the same as the alveolar cfg; originate in alveolar bone
Occurs in unusual ways and distorted crowns may appear

22. What are the three muscles of the neck?
Platysma - trapezius - sternocleidomastoid
Portion of the lips where the skin meets the vermilion zone
Supplies blood to the roots and periodontal ligaments of the interior teeth
A line that represents the alveolus bone lining the socket

23. Mental Nerve Branch
Bicuspids
Largest division of the trigeminal nerve
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Oval structures that are located on the dorsal surface of the tongue

24. What is the function of the buccle nerve branch?
Disk that acts like a cushion between the temporal bone and the condyloid process
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Narrow long enamel tuft

25. Peritubular Dentin
Creates the wall of the dentinal tubule
Place where the groove comes together or fissures cross
9 months (5 months ultrasound to tell sex)
Acts as anchors between the alveolar bone and the tooth

26. Maxillary Artery
20
Largest of the branches of the external carotid artery; supplies facial structure
(free gingiva) surrounds the teeth
Biting edge of the teeth

27. Periodontium
Biting edge of the teeth
Largest facial bone with two sections joined at the median suture
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Maxillary third molar

28. Function of Platysma
10 days
Small head - low nasal bridge - thin upper lip - small mandible
Draws down the mandible and corners of the mouth
Substances between cells

29. Oblique Ridge
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Shaping the tongue during speech - mastication and swallowing
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

30. Fissure
Resulting from an imperfect union where the lobes come together
Located on the inside of the body of the ramus
Cut - tear - and grind food
Trigeminal nerve--because it ennervates the maxilla and the mandible

31. Marginal Ridges
To dissolve
Elevated are of enamel that forms the Mesial and distal borders
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Natural teeth in position

32. Tendon
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Band of fibrous tissue which attaches muscle to bone
Surface towards the midline
Assist in the movement and functioning of the tongue

33. Rod Core
Inner portion of the enamel rod
Middle two teeth in the mouth
Moves the head backward and laterally
Small head - low nasal bridge - thin upper lip - small mandible

34. What are the only permeant teeth that are not succedaneous?
The development of different cells
4 cusps/ bifurcated
Forms into dentin - cementum and pulp of the teeth
Molars

35. What are the two muscles of the soft palate?
Small dark brushes
Palatoglossus - palatopharyngeal
The inner surface of the cheeks
A projection that extends off the back of the soft palate

36. What are the intrinsical muscles of the tongue responsible for?
Dividing point of a multi-rooted tooth
Shaping the tongue during speech - mastication and swallowing
Two
4th week

37. Pit
Extreme variations from the norm
Biting edge of the teeth
The tip of the chin
Place where the groove comes together or fissures cross

38. Dentinal Tubules
Secrete saliva to assist in process of digestion
Tubules that pass through the entire surface of the dentin
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Forms the bulk of the tooth

39. Sublingual Glands
Orbicularis oris - buccinator - mentalis - zygomatic major
Drains the Pterygoid plexus of the veins
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
Branches off the inferior alveolar artery before intering the mandibular canal

40. Vermilion Border
Where the ramus meets the body of the mandible on the outside border
Intervating the anterior teeth and the labial gingiva
Portion of the lips where the skin meets the vermilion zone
Indented

41. Lingual Foramen
Tubules that pass through the entire surface of the dentin
The internal surface at the center of the mandible
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Drains the superficial veins of the face and neck into the subclavian vein

42. Dental Arteries
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Smaller branch that ennervates the soft palate uvula and tonsils
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Rounded depression on a tooth

43. Mental Artery
Linear elevation of the tooth
Portion of the lips that are red
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Secrete saliva to assist in process of digestion

44. Palatine Raphe
Bifurcated/ 5 cusps
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Allow flexibility during mastication - speech
The slightly raised line extending down the middle of the hard palate

45. Genial Tubercles
Small bony projections surrounding the lingual foramen
A small projection in the middle of the upper lip
A line of demarcation between the attached gingiva and alveolar mucosa
A bony plate covered with keratinized tissue located in the anterior portion of the palate

46. Function of Sternocleidomastoid
Permeante teeth replace the primary teeth
Assists in elevating the chin
Inside surface Which is towards the tongue - on anterior teeth
Drains the superficial veins of the face and neck into the subclavian vein

47. Enamel Spindle
Short tubules that seem to crossover to the enamel
Shed from the oral cavity
Found only in multi-rooted teeth and resists rotational forces
A raised area of tissue laying behind the maxillary central incisors on the hard palate

48. Duct
The tip of the chin
Functions the same as the alveolar cfg; originate in alveolar bone
Canal or passage for fluid
Rounded depression on a tooth

49. Mixed Dentition
A period of both primary teeth and permeant teeth are in the dentition
Radiates from the developmental groove
A projection that extends off the back of the soft palate
Tooth emerges from gum tissue and becomes visible

50. Mucosa
Lining covers inside of the oral cavity
The mandibular molars
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
A raised white line that runs parallel to where the teeth meet on the buccal mucosa