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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. Lateral Incisor
Tubules that pass through the entire surface of the dentin
Second teeth next to central incisors
When the surface of the teeth becomes grooved
Chewing and swallowing food

2. What is the function of the buccle nerve branch?
Forming organ takes shape and resembles the shape of a bell
Small head - low nasal bridge - thin upper lip - small mandible
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Curve outward

3. Quadrants
Triferacated
Excess dryness of the mouth
Quarters of the teeth
Retracts the tongue and raises the tip of the tongue

4. Mesoderm
Forms into dentin - cementum and pulp of the teeth
Convex area on the lingual surface near gingiva
Outside surface Which is towards the cheek - on posterior teeth
Mildest form of cleft palate

5. What are the 4 maxillary nerve branches?
Tooth emerges from gum tissue and becomes visible
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Draws down the mandible and corners of the mouth

6. Odontoblast
Looking at the border of the tongue
Bluish veins that run the length of the tongue
A horseshoe shaped bone lying at the base of the tongue--all the muscles of the tongue and the floor of the mouth attach to this bone
Cells that form dentin

7. What are the eight landmarks of the face?
The mandibular first premolar
Forms the bulk of the tooth
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
2 to 3 pints

8. Function of Geniohyoid
Pulls the hyoid bone and the tongue anteriorly
1500 millimeters
Inner portion of the enamel rod
Opening in the mouth below the orbit on the maxillary bone

9. Maxillary Artery
Largest of the branches of the external carotid artery; supplies facial structure
Small linear depression
Healthy gingival tissue with an orange texture
Initiation of the tooth begins

10. Histo Differentiation
Cells develop into different tissues
Maxillary third molar
Located in a depressed area between the pillars
The development of different cells

11. Buccal Mucosa
Covers muscle tissue in the posterior portion of the palate
4 cusps/ bifurcated
Clear fluid secreted by the salivary and mucous glands throughout the mouth
The inner surface of the cheeks

12. Primary palate
Branches off the inferior alveolar artery before intering the mandibular canal
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Separates the developing oral cavities from the nasal cavities
Three bulges on the incisal edge

13. Stomedeum
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Separates the developing oral cavities from the nasal cavities
Primitive mouth
A line that represents the alveolus bone lining the socket

14. Greater Palatine Nerve
Opening for the ear
Small linear depression
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Cheek bones--the most breakable bone in the body

15. Oblique Fiber Group
Raised vertical folds of tissue on the lateral border of the tongue
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Resists intrusive forces that try to push the tooth inwards
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

16. Cusps
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Pointed or rounded mounds on the crown of the tooth
Located behind the ramus of the mandible and branches into five arteries
Inner portion of the enamel rod

17. How many cusps does the second bicuspid have?
9 weeks thru birth
Two
The area on the crown of the tooth that is nearest the gingival
The line of demarcation between the attached gingiva and the marginal gingiva

18. Embryo
1500 millimeters
Function to resist rotational forces and tilting
Indented
Two weeks thru 8th week

19. Morpho differentiation
The development of different forms
Second teeth next to central incisors
Substances between cells
A dense tissue covered with mucous membrane that can withstand chewing

20. What are the four major muscles of facial expression
Orbicularis oris - buccinator - mentalis - zygomatic major
A projection that extends off the back of the soft palate
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
A period of both primary teeth and permeant teeth are in the dentition

21. Dental Lamina
Formed by the fibroblast cells and secures the tooth in the socket
Teeth after cuspids
Growth from the oral epithelium that gives rise to the tooth buds
Assist in the movement and functioning of the tongue

22. Function of Platysma
Healthy gingival tissue with an orange texture
Small raised projections where taste buds are located
Draws down the mandible and corners of the mouth
Formed by the fibroblast cells and secures the tooth in the socket

23. Lamina Propria
Bony projection found on the bottom border of the temporal bone
The connective tissue of the marginal gingiva
Three bulges on the incisal edge
Week 11

24. External Oblique Ridge
Cells develop into different tissues
Follows the length of the body of the mandible past the last tooth and up to the ramus
The first predentin that is formed and matures within the tube
Supplies blood to the brain and the eyes

25. Dental Arteries
Inside surface Which is towards the tongue - on anterior teeth
Chewing and swallowing food
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Pulverizing or chewing surface

26. Mandible Arch
Oval depression of temporal bone in condyloid process
Lower arch of the teeth
Located in a depressed area between the pillars
Three bulges on the incisal edge

27. Duct
The inner surface of the lips
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Follows the inside of the ramus and the body of the mandible
Canal or passage for fluid

28. If Palate not fused
A faint line going from the ala of the nose to the corner of the mouth
Forms a large cavity above the roots of the maxillary molars
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Teeth will not erupt in proper position

29. Periodontal Ligaments
Small yellowish glands on the labial mucosa
Formed by the fibroblast cells and secures the tooth in the socket
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Three cusps/ trifurcated

30. Hyoid Bone
A horseshoe shaped bone lying at the base of the tongue--all the muscles of the tongue and the floor of the mouth attach to this bone
Excess dryness of the mouth
A faint line going from the ala of the nose to the corner of the mouth
(free gingiva) surrounds the teeth

31. Vestibule
A pocket formed by the soft tissue of cheeks and gingiva
A dense tissue covered with mucous membrane that can withstand chewing
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Pointed or rounded mounds on the crown of the tooth

32. Triangular Ridge
Trigeminal - facial - glossopharyngeal - hypoglossal
Where the proximal sides of two teeth come together and touch
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
20

33. What are the 4 cranial nerves that ennervate the face and oral cavity
Molaris meaning millstone
Trigeminal - facial - glossopharyngeal - hypoglossal
Bone that surrounds the root of the tooth
Responsible for laying down the enamel matrix into place

34. Eruption
Looking at the border of the tongue
Tooth emerges from gum tissue and becomes visible
The development of different tissues
Maxillary third molar

35. Rod Core
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Inner portion of the enamel rod
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Smaller branch that ennervates the soft palate uvula and tonsils

36. Gingival Sulcus
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
The space between the unattached gingiva and the tooth
Disk that acts like a cushion between the temporal bone and the condyloid process
Middle line of the teeth

37. What is origin and What is insertion?
Week 11
Opening for the ear
Origin - fixed point - insertion - movable point
Covering over the enamel that is left over from the epithelium ameloblasts

38. Tendon
A projection that extends off the back of the soft palate
Band of fibrous tissue which attaches muscle to bone
Permeante teeth replace the primary teeth
Dentin found between the tubules

39. Resonance
Scroll like bones outside the nasal cavaties
Drains the maxiallary artery and superficial temporal arteries
Full deep rich sound in nasal cavity
Located on the inside of the body of the ramus

40. Common Carotid
Forming organ takes shape and resembles the shape of a bell
Arteries supplying blood to most of the head and the neck
Week 12
Resulting from an imperfect union where the lobes come together

41. Succedaneous teeth
Small raised projections where taste buds are located
Permeante teeth replace the primary teeth
Second teeth next to central incisors
Portion of the lips where the skin meets the vermilion zone

42. Circular Ligament Fiber Groups
Small curved lines that run parellel to the CEJ
Circle and tighten the gingival margin around the neck of the tooth
The area on the crown of the tooth that is nearest the gingival
Pulverizing or chewing surface

43. When do the primary teeth begin erupting and are fully erupted?
Forms a large cavity above the roots of the maxillary molars
Interdental ligament
6 months/3years
The development of different tissues

44. Supplemental Groove
Radiates from the developmental groove
Set of arches found farther in the back of the throat
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
No bicuspids/ no 3rd molars

45. Stippled
Healthy gingival tissue with an orange texture
Moves the head backward and laterally
The inner surface of the lips
Clear fluid secreted by the salivary and mucous glands throughout the mouth

46. Occlusion third
Platysma - trapezius - sternocleidomastoid
Occlusal surface of the posterior tooth
A horseshoe shaped groove that follow the curve of the dental arch
Extends from the medial corner of the eye to the nasal cavity

47. How many cusps/ roots do the 2/3rd mandibular molars have?
4 cusps/ bifurcated
Forms the bulk of the tooth
The mandibular molars
To lubricate the oral cavity and to moisten food

48. Internal Carotid Artery
Tissue fluid surrounding the cell membrane of the odontoblast
Supplies blood to the brain and the eyes
Dentin found between the tubules
Located on the inside of the body of the ramus

49. What are the two muscles of the soft palate?
Palatoglossus - palatopharyngeal
An enclosed area that matures into dentin - cementum and pulp
Week 11
When the tissue becomes inflamed

50. What are the 3 branches of the mandibular nerve branch?
Buccal - lingual - and inferior alveolar
Shaping the tongue during speech - mastication and swallowing
Functions the same as the alveolar cfg; originate in alveolar bone
Radiates from the developmental groove