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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. Pterygoid Process
Third tooth from the midline
Tissue fluid surrounding the cell membrane of the odontoblast
Forms a large cavity above the roots of the maxillary molars
Wings of the sphenoid bone

2. What is the maxillary cuspid known as?
Composed of mucosa and surrounds the necks of the teeth
When the tissue becomes inflamed
The cornerstone of the mouth
Calcium salts are deposited into formed tooth

3. Dental Arteries
Lower arch of the teeth
A junction or center of veins that directly or indirectly drain a vast area
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Band of fibrous tissue which attaches bone to bone

4. Convects
A period of both primary teeth and permeant teeth are in the dentition
Curve outward
The mandibular first premolar
Two

5. Middle Superior Alveolar Nerve
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Found near the cementoenamel junction
Pulverizing or chewing surface
Wings of the sphenoid bone

6. What is the most common problem with TMJ
Appears to be loosely attached - covering the alveolar bone.
Set of arches found farther in the back of the throat
Corners of the mouth
The disc becomes displaced

7. Stenson's Duct
Duct located on the parotid papilla
Assists in elevating the chin
Small curved lines that run parellel to the CEJ
An extension of an unattached gingiva and the tooth

8. Morpho differentiation
Two
Draws the hyoid bone superiorly and posteriorly and stabilizes it
The development of different forms
A junction or center of veins that directly or indirectly drain a vast area

9. Pulp horns
The layer of dentin that surrounds the pulp
The slightly raised line extending down the middle of the hard palate
Healthy gingival tissue with an orange texture
Pointed elongations of the pulp

10. Attached Gingiva
An enclosed area that matures into dentin - cementum and pulp
Drains the Pterygoid plexus of the veins
Extends from the mucogingival junction to the gingival groove
Upper arch of the teeth

11. What are the four main functions of deciduous teeth?
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
A small projection in the middle of the upper lip
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Mastication - aids in speech - influence facial structure - chewing surfaces

12. Function of Platysma
A shallow v-shaped depression located below the bottom of the nose and above the lips
Draws down the mandible and corners of the mouth
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Drains the facial structures beginning near the eye and descending toward the mandible

13. Lingual Nerve Branch
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Tissue covering the alveolar processes
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
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

14. lst and second premolars
Triangular space in the gingival direction when two adjacent teeth are in contact
Teeth after cuspids
Third tooth from the midline
Bicuspids

15. External Auditory Meatus
The inner surface of the cheeks
A line that represents the alveolus bone lining the socket
Greater - lesser - naso palatine nerves
Opening for the ear

16. When do oral and nasal cavity separate and palate develop?
Week 12
Formed by the fibroblast cells and secures the tooth in the socket
Maxillary third molar
1500 millimeters

17. Torus
Linear elevation of the tooth
Excess bone in the middle of the palate
Drains the facial structures beginning near the eye and descending toward the mandible
Study of the structure and form of the teeth

18. Parotid Papilla
A flap of tissue on the on the buccal mucosa
Where the ramus meets the body of the mandible on the outside border
Small linear depression
The groove below the lower lips that separates the lips from the chin

19. Frenum
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
The portion of the tooth that meets the gingiva
Middle line of the teeth
Pointed elongations of the pulp

20. What are the 3 branches of the pterygopalatine nerve branch?
Mastication - aids in speech - influence facial structure - chewing surfaces
Supplies blood to the face and oral cavity
Greater - lesser - naso palatine nerves
Glands the size of a walnut that lie on the inside of the mandible and empty saliva into the mouth thru the Wharton's duct

21. Labial Commissures
Place where the groove comes together or fissures cross
Teeth will not erupt in proper position
Corners of the mouth
Lower arch of the teeth

22. Circumpulpal Dentin
The layer of dentin that surrounds the pulp
Cheek bones--the most breakable bone in the body
Portion of the lips where the skin meets the vermilion zone
9 weeks thru birth

23. Fordyce's Spots
The development of different forms
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Bluish veins that run the length of the tongue
Small yellowish glands on the labial mucosa

24. Convex
To bulge of curve outward
Separates the developing oral cavities from the nasal cavities
Dividing point of a multi-rooted tooth
12 years

25. Lingual Vein
Orbicularis oris - buccinator - mentalis - zygomatic major
Surface away from the midline
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Drains the floor of the mouth

26. Agenesis
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Occurs in unusual ways and distorted crowns may appear
A line of demarcation between the attached gingiva and alveolar mucosa
Act to maintain the gingival integrity of the marginal gingiva

27. Vermilion Zone
Three cusps/ trifurcated
Portion of the lips that are red
Raised vertical folds of tissue on the lateral border of the tongue
Portion covered with cementum

28. Mastoid process
Bony projection found on the bottom border of the temporal bone
Forms the remaining 2/3 of the hard and soft palate uvula
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
Teeth will not erupt in proper position

29. Distal
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Surface away from the midline
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Bluish veins that run the length of the tongue

30. Maxilla
Wearing away of the incisal or occlusal surfaces of the tooth
Platysma - trapezius - sternocleidomastoid
Largest facial bone with two sections joined at the median suture
Origin of the tooth

31. Marginal GIngiva
Second teeth next to central incisors
Shaping the tongue during speech - mastication and swallowing
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
(free gingiva) surrounds the teeth

32. Zygomatic nerve
Extends from the medial corner of the eye to the nasal cavity
The development of different tissues
A line that represents the alveolus bone lining the socket
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch

33. Incisal third
Inside surface Which is towards the tongue - on anterior teeth
Opening for the ear
Portion of the lips that are red
The crown of the tooth that is nearest the incisal edge near the anterior tooth

34. Buccal Mucosa
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
The inner surface of the cheeks
Assists in elevating the chin
The moveable attachment of the muscle

35. Palatine Raphe
Lift the hyoid bone and assist in opening the mouth
Primitive mouth
Extreme variations from the norm
The slightly raised line extending down the middle of the hard palate

36. What is the latin word for molar?
Oval depression of temporal bone in condyloid process
Maxillary third molar
Molaris meaning millstone
The connective tissue of the marginal gingiva

37. How many roots/ cusps does the mandibular first molar have?
Bifurcated/ 5 cusps
Enamel forming cells
Study of the structure and form of the teeth
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

38. Xygote
Conception thru the first two weeks
Healthy gingival tissue with an orange texture
Three bulges on the incisal edge
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

39. What are the 4 maxillary nerve branches?
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Located on the inside of the body of the ramus
Scroll like bones outside the nasal cavaties
Outside surface Which is towards the lips

40. What is the largest cranial nerve and the most important to dental auxillaries and why?
To bulge of curve outward
Enamel forming cells
Trigeminal nerve--because it ennervates the maxilla and the mandible
The crown of the tooth that is nearest the incisal edge near the anterior tooth

41. Tendon
Resists forces that try to pull the tooth outward
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Band of fibrous tissue which attaches muscle to bone
A rounded area beyond the last posterior maxillary tooth

42. Stomedeum
Primitive mouth
Portion of the lips where the skin meets the vermilion zone
Separates the developing oral cavities from the nasal cavities
Excess bone in the middle of the palate

43. What are the characteristics of deciduous teeth?
Extreme variations from the norm
Forms the remaining 2/3 of the hard and soft palate uvula
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

44. Where is the palate located?
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Inside of the maxillary teeth
A dense tissue covered with mucous membrane that can withstand chewing
Substances between cells

45. Histo Differentation
Where the ectoderm layer matures into the enamel
The development of different tissues
A dense tissue covered with mucous membrane that can withstand chewing
A projection that extends off the back of the soft palate

46. Function of Geneoglossus?
Portion of the root seen in the oral cavity
The mandibular first premolar
Retracts or depresses the tongue
Fifth cusp located on the mesial surface lingual surface of maxillary first molars

47. What are the characteristics of permanent teeth?
Enamel is thinner - pulp chamber is smaller -
Permeante teeth replace the primary teeth
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
10 days

48. Supplemental Groove
Surface away from the midline
Glands the size of a walnut that lie on the inside of the mandible and empty saliva into the mouth thru the Wharton's duct
Radiates from the developmental groove
Resist rotational forces and hold teeth in inter-proximal contact

49. Pterygoid Artery
A horseshoe shaped groove that follow the curve of the dental arch
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
To bulge of curve outward
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

50. Fissure
Resulting from an imperfect union where the lobes come together
Of or pertaining to area surrounding naval cavity
Largest of the branches of the external carotid artery; supplies facial structure
Excess bone in the middle of the palate