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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. How many cusps does the second bicuspid have?
1500 millimeters
Molars
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Two

2. What is the smallest tooth in dentition?
Developmental segment of a tooth
Of or pertaining to area surrounding naval cavity
Inside surface Which is towards the tongue - on anterior teeth
Mandibular central incisors

3. Rod Core
Secrete saliva to assist in process of digestion
Inner portion of the enamel rod
Extreme variations from the norm
The teeth located at the back of the mouth

4. Periodontium
Portion of the lips where the skin meets the vermilion zone
Linear elevation of the tooth
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone

5. Primary palate
Two cortical bone plates that come together between each tooth
Tubules that pass through the entire surface of the dentin
Three bulges on the incisal edge
Separates the developing oral cavities from the nasal cavities

6. What ligament is retained the longest during periodontal disease?
Resist rotational forces and hold teeth in inter-proximal contact
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Interdental ligament
A projection that extends off the back of the soft palate

7. Anterior Alveolar Nerve
Drains the facial structures beginning near the eye and descending toward the mandible
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
The first predentin that is formed and matures within the tube
Initiation of the tooth begins

8. Sublingual Glands
Small grooves noted on some teeth
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
When the tissue becomes inflamed
Mastication - aids in speech - influence facial structure - chewing surfaces

9. Fetal Alcohol Syndrome symptons
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Small head - low nasal bridge - thin upper lip - small mandible
Peg shaped crown with a smooth surface
4 cusps/ bifurcated

10. Triangular Ridge
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Drains the Pterygoid plexus of the veins
Incremental line indicating trauma of birth

11. Lacrimal Bones
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Intervating the anterior teeth and the labial gingiva
Forms a large cavity above the roots of the maxillary molars
Sharp projection on the under surface of the temporal bone

12. Common Carotid
Used to pulverize food
Found near the cementoenamel junction
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Arteries supplying blood to most of the head and the neck

13. Palatine Raphe
When the dentin is exposed
Two cortical bone plates that come together between each tooth
The slightly raised line extending down the middle of the hard palate
An overgrowth of the gingival tissue

14. Labial Commissures
(free gingiva) surrounds the teeth
Corners of the mouth
Small dark brushes
Natural teeth in position

15. Inferior Alveolar Artery
Follows the length of the body of the mandible past the last tooth and up to the ramus
Covers muscle tissue in the posterior portion of the palate
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Ligaments and muscles of mastication

16. Parotid Papilla
2 to 3 pints
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
The development of different forms
A flap of tissue on the on the buccal mucosa

17. Xygote
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Where the proximal sides of two teeth come together and touch
Genioglossus - hyoglossus - styloglossus - palatoglossus
When cells rapidly increase in number

18. Incisal third
Ligaments and muscles of mastication
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Raised vertical folds of tissue on the lateral border of the tongue
Forms after the completion of the apical foramen

19. Sublingual Sulcus
The bone that separates the root on a tooth
Synovial fluid
Developmental segment of a tooth
A horseshoe shaped groove that follow the curve of the dental arch

20. Posterior Tonsillar Pillar
Incremental lines around the layers of the enamel matrix
Located on the inside of the body of the ramus
Buccal - lingual - and inferior alveolar
Set of arches found farther in the back of the throat

21. What are the four main functions of deciduous teeth?
A line that represents the alveolus bone lining the socket
Conception thru the first two weeks
Mastication - aids in speech - influence facial structure - chewing surfaces
The cornerstone of the mouth

22. Function of Geniohyoid
Aid in attaching the gingiva to the alveolar bone
Pulls the hyoid bone and the tongue anteriorly
Middle line of the teeth
Primary embryonic mesoderm layer that develops during the morpho differentiation period

23. Landmarks
Band of fibrous tissue which attaches muscle to bone
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Greater - lesser - naso palatine nerves

24. Anterior Tonsillar Pillar
Secrete saliva to assist in process of digestion
Natural teeth in position
Cells that form cementum
Folds of tissue that extend horizontally from the uvula to the base of the tongue

25. What are the two ways the TMJs move?
Portion of the root seen in the oral cavity
Corners of the mouth
Compact bone plate of the facial and lingual surfaces
Hinge motion and gliding movement

26. Tendon
Cheek bones--the most breakable bone in the body
Band of fibrous tissue which attaches muscle to bone
The line of demarcation between the attached gingiva and the marginal gingiva
Functions the same as the alveolar cfg; originate in alveolar bone

27. Lateral Incisor
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Respiratory system - digestive system and glandular organs
Second teeth next to central incisors
Intervating the anterior teeth and the labial gingiva

28. Hard Palate
A projection that extends off the back of the soft palate
The largest of three openings located in the posterior region of the hard palate
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Largest of the branches of the external carotid artery; supplies facial structure

29. How is the TMJ supported and what controls their movement?
The connective tissue of the marginal gingiva
Ligaments and muscles of mastication
Creates the wall of the dentinal tubule
Found near the cementoenamel junction

30. What are the two muscles of the soft palate?
Palatoglossus - palatopharyngeal
Branches off the inferior alveolar artery before intering the mandibular canal
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Molars

31. Gingival Sulcus
The space between the unattached gingiva and the tooth
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Bluish veins that run the length of the tongue
Clear fluid secreted by the salivary and mucous glands throughout the mouth

32. What are the 4 cranial nerves that ennervate the face and oral cavity
Causes a thickening of the cementum around the apex
Trigeminal - facial - glossopharyngeal - hypoglossal
Stained growth rings in dentin
Primary and permanent

33. Incisal Edge
Located in a depressed area between the pillars
Biting edge of the teeth
2 small raised folds of tissue where the lingual frenum attaches
Forms a large cavity above the roots of the maxillary molars

34. Function of Hyoglossus
Tooth emerges from gum tissue and becomes visible
Bifurcated/ 5 cusps
Depresses the tongue
6 months/3years

35. Palantine Tonsils
Molars
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Located in a depressed area between the pillars
A raised area of tissue laying behind the maxillary central incisors on the hard palate

36. Uvula
Set of arches found farther in the back of the throat
Cut - tear - and grind food
A projection that extends off the back of the soft palate
Study of prenatal growth and the developing process of an individual

37. Cleft Lip
Separation of the upper lip ( 1 of 1000 live births)
Found near the cementoenamel junction
When the dentin is exposed
Covering over the enamel that is left over from the epithelium ameloblasts

38. What are the 12 landmarks of the oral cavity?

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39. Histology
Portion of the lips that are red
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The study of the microscopic structure and functions of tissues
Extreme variations from the norm

40. Histo Differentiation
Cells develop into different tissues
Functions the same as the alveolar cfg; originate in alveolar bone
Divides the crown and the root
Incremental line indicating trauma of birth

41. When does the maxillary second molar erupt?
Middle line of the teeth
The cornerstone of the mouth
12 years
Study of prenatal growth and the developing process of an individual

42. What is the most common problem with TMJ
The disc becomes displaced
Pulls the hyoid bone and the tongue anteriorly
A bat shaped bone which forms the anterior portion of the skull
The first predentin that is formed and matures within the tube

43. How many teeth are in the Primary teeth?
20
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Orbicularis oris - buccinator - mentalis - zygomatic major
Growth from the oral epithelium that gives rise to the tooth buds

44. Odontoblast
Lining covers inside of the oral cavity
The slightly raised line extending down the middle of the hard palate
Cells that form dentin
A flap of tissue on the on the buccal mucosa

45. Genial Tubercles
Small bony projections surrounding the lingual foramen
Follows the length of the body of the mandible past the last tooth and up to the ramus
Lift the hyoid bone and assist in opening the mouth
Excess bone formations under the tongue on the alvellar bone

46. What are the intrinsical muscles of the tongue responsible for?
Shaping the tongue during speech - mastication and swallowing
Layers of tooth tissue become calcified
The mandibular first premolar
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

47. Incisive Nerve branch
The mandibular first premolar
Intervating the anterior teeth and the labial gingiva
Where the proximal sides of two teeth come together and touch
A bat shaped bone which forms the anterior portion of the skull

48. Denticion
Natural teeth in position
Place where the groove comes together or fissures cross
Composed of mucosa and surrounds the necks of the teeth
A bat shaped bone which forms the anterior portion of the skull

49. What are the eight landmarks of the face?
Trigeminal nerve--because it ennervates the maxilla and the mandible
Band of fibrous tissue which attaches bone to bone
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Extreme variations from the norm

50. Which molar contains the cusp of Caribelli?
Maxillary first molar
Elevates the posterior portion of the tongue and narrows the fauces
The largest of the salivary glands which lie just below and in front of the ear
Causes a thickening of the cementum around the apex