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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 only permeant teeth that are not succedaneous?
Molars
Pointed or rounded mounds on the crown of the tooth
Duct located on the parotid papilla
Developmental segment of a tooth

2. Naso Palatine Nerve
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Stained growth rings in dentin
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
The layer of dentin that surrounds the pulp

3. Cyto differentiation
Lift the hyoid bone and assist in opening the mouth
The development of different cells
Mastication - aids in speech - influence facial structure - chewing surfaces
Outside surface Which is towards the cheek - on posterior teeth

4. What is Ankyloglossia and who can treat it / What is the treatment called?
No bicuspids/ no 3rd molars
Triangular space in the gingival direction when two adjacent teeth are in contact
Disk that acts like a cushion between the temporal bone and the condyloid process
A condition where the lower frenum attachment is very short/DDS/frenectomy

5. Concave
The cornerstone of the mouth
Indented
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Orbicularis oris - buccinator - mentalis - zygomatic major

6. Mesenchyme Tissue
Stained growth rings in dentin
The disc becomes displaced
2 to 3 pints
Primary embryonic mesoderm layer that develops during the morpho differentiation period

7. What is the most common problem with TMJ
Place where the groove comes together or fissures cross
The disc becomes displaced
Excess bone in the middle of the palate
Portion of the lips where the skin meets the vermilion zone

8. Lingual Foramen
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Orbicularis oris - buccinator - mentalis - zygomatic major
The internal surface at the center of the mandible
Narrow long enamel tuft

9. Gingival Hyperplasia
Layers of tooth tissue become calcified
An overgrowth of the gingival tissue
The largest of the salivary glands which lie just below and in front of the ear
Three bulges on the incisal edge

10. Infraorbital Foramen
A pocket formed by the soft tissue of cheeks and gingiva
The bone that separates the root on a tooth
Opening in the mouth below the orbit on the maxillary bone
2 to 3 pints

11. What are the two ways the TMJs move?
Hinge motion and gliding movement
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Primitive mouth
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

12. Gingiva
A line that represents the alveolus bone lining the socket
Orbicularis oris - buccinator - mentalis - zygomatic major
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
A dense tissue covered with mucous membrane that can withstand chewing

13. What is origin and What is insertion?
Origin - fixed point - insertion - movable point
The corners of the mouth where the top and bottom lip meet
A horseshoe shaped groove that follow the curve of the dental arch
To dissolve

14. How is the TMJ supported and what controls their movement?
Indented
Cells that form cementum
Ligaments and muscles of mastication
An extension of an unattached gingiva and the tooth

15. Evanesce
When the dentin is exposed
To dissolve
Small head - low nasal bridge - thin upper lip - small mandible
Primitive mouth

16. What are the characteristics of permanent teeth?
Enamel is thinner - pulp chamber is smaller -
Largest division of the trigeminal nerve
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Extends from the medial corner of the eye to the nasal cavity

17. Maxillary Tuberosity
Middle two teeth in the mouth
Linear elevation of the tooth
Small bony projections surrounding the lingual foramen
A rounded area beyond the last posterior maxillary tooth

18. Xygote
Small dark brushes
Corners of the mouth
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
When cells rapidly increase in number

19. Xygomatic bones
Study of prenatal growth and the developing process of an individual
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Cheek bones--the most breakable bone in the body
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct

20. Stippled
Healthy gingival tissue with an orange texture
Tissue fluid surrounding the cell membrane of the odontoblast
Opening in the mouth below the orbit on the maxillary bone
10 days

21. Filiform Papillae
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Draws down the mandible and corners of the mouth
Separation of the upper lip ( 1 of 1000 live births)
Mandibular central incisors

22. Function of Palatoglossus
Demonstrates a disturbance in the body metabolism
Elevates the posterior portion of the tongue and narrows the fauces
Ligaments and muscles of mastication
Conception thru the first two weeks

23. What are the 4 muscles of the floor of the mouth?
Digstric - Mylohyoid - stylohyoid - geniohyoid
Resist rotational forces and hold teeth in inter-proximal contact
Covers muscle tissue in the posterior portion of the palate
Bicuspids

24. Cementoblast
The area on the crown of the tooth that is nearest the gingival
The outer edge of the nostril
A bony projection that separates each socket
Cells that form cementum

25. Horizontal Fiber Group
Chewing and swallowing food
Supportive fibers that anchor the tooth to the bone
Mucosa that covers the alveolar bone
Functions the same as the alveolar cfg; originate in alveolar bone

26. Muscle origine
Primary and permanent
The fixed attachment of a muscle
Excess dryness of the mouth
Cells develop into different tissues

27. Maxillary Nerve Branch
Primary and permanent
Found only in multi-rooted teeth and resists rotational forces
Two cortical bone plates that come together between each tooth
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

28. Function of Geneoglossus?
Molars
Retracts or depresses the tongue
Drains the superficial veins of the face and neck into the subclavian vein
Forms after the completion of the apical foramen

29. Function of Sternocleidomastoid
The mandibular first premolar
Portion covered with cementum
Assists in elevating the chin
Two cortical bone plates that come together between each tooth

30. Mandibular Artery
Outside surface Which is towards the cheek - on posterior teeth
Located behind the ramus of the mandible and branches into five arteries
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Opening in the mouth below the orbit on the maxillary bone

31. Zygomatic nerve
6 months/3years
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

32. Philtrum
Vertical groove on the midline of the upper lip
The area on the crown of the tooth that is nearest the gingival
Greater - lesser - naso palatine nerves
When the dentin is exposed

33. Retromolar Area
Excess dryness of the mouth
A triangular area located behind the last molar
Elevated are of enamel that forms the Mesial and distal borders
Supplies blood to the roots and periodontal ligaments of the molars and premolars

34. Lines of Retzius
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Incremental lines around the layers of the enamel matrix
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
A small projection in the middle of the upper lip

35. Paranasal
Enamel forming cells
Of or pertaining to area surrounding naval cavity
Aid in attaching the gingiva to the alveolar bone
Respiratory system - digestive system and glandular organs

36. Cusps
Cluster of tissue that manufactures and secrets fluid
Pointed or rounded mounds on the crown of the tooth
Oval depression of temporal bone in condyloid process
Small dark brushes

37. What are the two muscles of the soft palate?
Bifurcated/ 5 cusps
Oval structures that are located on the dorsal surface of the tongue
Resists forces that try to pull the tooth outward
Palatoglossus - palatopharyngeal

38. Pit
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Place where the groove comes together or fissures cross
Portion covered with cementum
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars

39. Anterior Alveolar Nerve
The internal surface at the center of the mandible
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Used to pulverize food
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip

40. Buccal
Drains the floor of the mouth
Growth from the oral epithelium that gives rise to the tooth buds
Outside surface Which is towards the cheek - on posterior teeth
Fleshy elevation under the tongue

41. What are the 4 pairs of muscles of mastication!
The groove below the lower lips that separates the lips from the chin
Tissue fluid surrounding the cell membrane of the odontoblast
Enamel forming cells
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

42. Furcation
Dividing point of a multi-rooted tooth
A bat shaped bone which forms the anterior portion of the skull
Bicuspids
Opening in the mouth below the orbit on the maxillary bone

43. Xygote
Permeante teeth replace the primary teeth
The ridges that run horizontally across the hard palate behind the incisive papilla
When the surface of the teeth becomes grooved
Conception thru the first two weeks

44. Pulp Stones
Healthy gingival tissue with an orange texture
Calcified masses of dentin
Resists forces that try to pull the tooth outward
Enamel forming cells

45. Proliferation
Upper arch of the teeth
Where the ectoderm layer matures into the enamel
Natural teeth in position
Located on the inside of the body of the ramus

46. Cuspid
32
Third tooth from the midline
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Trigeminal nerve--because it ennervates the maxilla and the mandible

47. Succedaneous teeth
Permeante teeth replace the primary teeth
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Elevates the posterior portion of the tongue and narrows the fauces
Drains the floor of the mouth

48. Secondary palate
Synovial fluid
Assist in depressing the mandible and elevating the tongue
Cells that form dentin
Forms the remaining 2/3 of the hard and soft palate uvula

49. Pterygoid Process
Three bulges on the incisal edge
Wings of the sphenoid bone
Two vertical extensions of the mandible
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

50. Dental Lamina
The development of different forms
Growth from the oral epithelium that gives rise to the tooth buds
The cornerstone of the mouth
Cheek bones--the most breakable bone in the body