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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 is the smallest tooth in dentition?
Causes a thickening of the cementum around the apex
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Mandibular central incisors
Compact bone plate of the facial and lingual surfaces

2. Sublingual Caruncles
Resulting from an imperfect union where the lobes come together
Fleshy elevation under the tongue
The portion of the tooth that meets the gingiva
2 small raised folds of tissue where the lingual frenum attaches

3. Maxillary Nerve Branch
The tip of the chin
Hinge motion and gliding movement
Incremental line indicating trauma of birth
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

4. Convects
Curve outward
Enamel is thinner - pulp chamber is smaller -
Three cusps/ trifurcated
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

5. Alveolar Crest Fiber Group
Linear elevation of the tooth
Dentin found between the tubules
Function to resist rotational forces and tilting
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

6. Cuspid
Third tooth from the midline
Greater - lesser - naso palatine nerves
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Formed by the fibroblast cells and secures the tooth in the socket

7. Fimbriated Folds
Folds of tissue to the the lingual veins
6 years old
The corners of the mouth where the top and bottom lip meet
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

8. Concave
Forming organ takes shape and resembles the shape of a bell
Allow flexibility during mastication - speech
Study of the structure and form of the teeth
Indented

9. Philtrum
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Retracts or depresses the tongue
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Vertical groove on the midline of the upper lip

10. If a patient receives toxic agents - how long does it take for their sense of taste to return?
Outside surface Which is towards the lips
Study of the structure and form of the teeth
An overgrowth of the gingival tissue
10 days

11. Incisive Papilla
Extends from the medial corner of the eye to the nasal cavity
A raised area of tissue laying behind the maxillary central incisors on the hard palate
The line of demarcation between the attached gingiva and the marginal gingiva
Wearing away of the incisal or occlusal surfaces of the tooth

12. Inferior Alveolar Artery
Supplies blood to the brain and the eyes
The connective tissue of the marginal gingiva
Where the ramus meets the body of the mandible on the outside border
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

13. What is the largest cranial nerve and the most important to dental auxillaries and why?
Dentin found between the tubules
Trigeminal nerve--because it ennervates the maxilla and the mandible
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Middle line of the teeth

14. Frenum
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
The mandibular first premolar
Extreme variations from the norm
Inner portion of the enamel rod

15. What kind of root does the maxillary first molar have?
Demonstrates a disturbance in the body metabolism
Triferacated
Enamel forming cells
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

16. How many cusps/ roots do the 2/3rd maxillary molars have?
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Three cusps/ trifurcated
Radiates from the developmental groove
Pointed elongations of the pulp

17. What are the 4 taste senses and where are they located?
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Synovial fluid
Occurs in unusual ways and distorted crowns may appear
Composed of mucosa and surrounds the necks of the teeth

18. Cervical line
Vertical groove on the midline of the upper lip
Divides the crown and the root
Elevated are of enamel that forms the Mesial and distal borders
Small dark brushes

19. Pterygoid plexus of the veins
Drains the facial structures beginning near the eye and descending toward the mandible
Convex area on the lingual surface near gingiva
4th week
A junction or center of veins that directly or indirectly drain a vast area

20. Symphysis
2 small raised folds of tissue where the lingual frenum attaches
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
The largest of three openings located in the posterior region of the hard palate
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

21. Lobes
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
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
Developmental segment of a tooth
A bat shaped bone which forms the anterior portion of the skull

22. Incisal third
Trigeminal - facial - glossopharyngeal - hypoglossal
Origin of the tooth
Oval depression of temporal bone in condyloid process
The crown of the tooth that is nearest the incisal edge near the anterior tooth

23. When does the maxillary second molar erupt?
The internal surface at the center of the mandible
12 years
Forms into dentin - cementum and pulp of the teeth
Aid in attaching the gingiva to the alveolar bone

24. Odontoblast
Functions the same as the alveolar cfg; originate in alveolar bone
Developmental segment of a tooth
Cells that form dentin
Cells develop into different tissues

25. Calcification
Cells From which connective tissue evolve
Forms the bulk of the tooth
Layers of tooth tissue become calcified
Two weeks thru 8th week

26. Mental Nerve Branch
Largest division of the trigeminal nerve
(free gingiva) surrounds the teeth
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
12 years

27. Articular Disc
Cells From which connective tissue evolve
The development of different forms
Moves the head backward and laterally
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

28. Styloid Process
Largest of the branches of the external carotid artery; supplies facial structure
2 to 3 pints
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Sharp projection on the under surface of the temporal bone

29. Lines of Retzius
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Enamel is thinner - pulp chamber is smaller -
Incremental lines around the layers of the enamel matrix
A projection that extends off the back of the soft palate

30. Mucosa
Lining covers inside of the oral cavity
Radiates from the developmental groove
12 years
Assist in the movement and functioning of the tongue

31. Cementoblast
Cells that form cementum
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
Middle two teeth in the mouth
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

32. Lateral Incisor
Band of fibrous tissue which attaches muscle to bone
Located behind the ramus of the mandible and branches into five arteries
Second teeth next to central incisors
Shaping the tongue during speech - mastication and swallowing

33. Lesser Palatine Nerve
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Assists in elevating the chin
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Smaller branch that ennervates the soft palate uvula and tonsils

34. Cemental Spurs
Found near the cementoenamel junction
12 years
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
The outer edge of the nostril

35. Xygote
When cells rapidly increase in number
Bi-cuspids
Set of arches found farther in the back of the throat
Peg shaped crown with a smooth surface

36. External Jugular Vein
Separates the developing oral cavities from the nasal cavities
Surface towards 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
Drains the superficial veins of the face and neck into the subclavian vein

37. Rod Core
Inner portion of the enamel rod
Smaller branch that ennervates the soft palate uvula and tonsils
Triangular space in the gingival direction when two adjacent teeth are in contact
Small linear depression

38. What are the characteristics of deciduous teeth?
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
A pocket formed by the soft tissue of cheeks and gingiva
Cheek bones--the most breakable bone in the body

39. Imbracation Lines
Small curved lines that run parellel to the CEJ
Drains the maxiallary artery and superficial temporal arteries
Surface towards the midline
When the surface of the teeth becomes grooved

40. Naso Palatine Nerve
Maxillary third molar
Teeth after cuspids
Sharp projection on the under surface of the temporal bone
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

41. Labial Commissures
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
A line that represents the alveolus bone lining the socket
The corners of the mouth where the top and bottom lip meet
The crown of the tooth that is nearest the incisal edge near the anterior tooth

42. Lingual
Two
Wings of the sphenoid bone
Two weeks thru 8th week
Inside surface Which is towards the tongue - on anterior teeth

43. Periodontal Ligaments
Formed by the fibroblast cells and secures the tooth in the socket
An enclosed area that matures into dentin - cementum and pulp
Excess dryness of the mouth
4 cusps/ bifurcated

44. Vermilion Border
Full deep rich sound in nasal cavity
Digstric - Mylohyoid - stylohyoid - geniohyoid
Portion of the lips where the skin meets the vermilion zone
Excess bone in the middle of the palate

45. Greater Palatine Nerve
Occurs in unusual ways and distorted crowns may appear
Curve outward
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Pulls the hyoid bone and the tongue anteriorly

46. Saliva
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Corners of the mouth
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
The development of different tissues

47. Gingiva
Three bulges on the incisal edge
Tooth emerges from gum tissue and becomes visible
Composed of mucosa and surrounds the necks of the teeth
Mucosa that covers the alveolar bone

48. Alveolar Mucosa
Mucosa that covers the alveolar bone
20
Stained growth rings in dentin
Primary embryonic mesoderm layer that develops during the morpho differentiation period

49. Mamelons
Biting edge of the teeth
Three bulges on the incisal edge
Molars
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

50. Inferior Nasal Conchae
A projection that extends off the back of the soft palate
Inner portion of the enamel rod
Causes a thickening of the cementum around the apex
Scroll like bones outside the nasal cavaties