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Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. If Palate not fused
Teeth will not erupt in proper position
Where the ramus meets the body of the mandible on the outside border
Canal or passage for fluid
Week 12

2. Stensens' Duct (aka Parotid)

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3. Fetus
Narrow long enamel tuft
9 weeks thru birth
Small yellowish glands on the labial mucosa
Circle and tighten the gingival margin around the neck of the tooth

4. Lacrimal Bones
Forms the remaining 2/3 of the hard and soft palate uvula
Growth from the oral epithelium that gives rise to the tooth buds
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

5. What is origin and What is insertion?
Origin - fixed point - insertion - movable point
Disk that acts like a cushion between the temporal bone and the condyloid process
Portion covered with cementum
Radiates from the developmental groove

6. Fimbriated Folds
Tissue covering the alveolar processes
To bulge of curve outward
Folds of tissue to the the lingual veins
Short tubules that seem to crossover to the enamel

7. Internal Oblique Ridge
The development of different tissues
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Follows the inside of the ramus and the body of the mandible
20

8. Periodontal Ligaments
Located in a depressed area between the pillars
Formed by the fibroblast cells and secures the tooth in the socket
Largest facial bone with two sections joined at the median suture
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar

9. Histo Differentiation
Conception thru the first two weeks
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Cells develop into different tissues
Maxillary first molar

10. Linea Alba
The deepest point of the vestibule
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Composed of mucosa and surrounds the necks of the teeth
Divides the crown and the root

11. How many teeth are in the Primary teeth?
20
Portion covered with cementum
Mastication - aids in speech - influence facial structure - chewing surfaces
The corners of the mouth where the top and bottom lip meet

12. Sharpey's Fibers
Acts as anchors between the alveolar bone and the tooth
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Inside surface Which is towards the tongue - on anterior teeth
Biting edge of the teeth

13. Alveolar Crest
The portion of the tooth that meets the gingiva
Extends from the medial corner of the eye to the nasal cavity
Constricts the nasopharyngeal passage and elevates the larynx
Two cortical bone plates that come together between each tooth

14. Imbrication lines
Slight ridges on the cervical third of certain teeth that extend mesiodistally
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Small curved lines that run parellel to the CEJ
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids

15. Which molar contains the cusp of Caribelli?
Maxillary first molar
Buccal - lingual - and inferior alveolar
Resists forces that try to pull the tooth outward
Tubules that pass through the entire surface of the dentin

16. Incisal Edge
Creates the wall of the dentinal tubule
Cells develop into different tissues
Biting edge of the teeth
Incremental lines around the layers of the enamel matrix

17. Buccal
Formed by the uniting of lobes during development of crown
Outside surface Which is towards the cheek - on posterior teeth
Small linear depression
The slightly raised line extending down the middle of the hard palate

18. TMJ bones are bathed In what solution?
Synovial fluid
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
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
An extension of an unattached gingiva and the tooth

19. Philtrum
4 cusps/ bifurcated
Synovial fluid
A shallow v-shaped depression located below the bottom of the nose and above the lips
The fixed attachment of a muscle

20. Pterygoid Artery
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Week 12
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Tooth emerges from gum tissue and becomes visible

21. Lamina Dura
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Found only in multi-rooted teeth and resists rotational forces
A line that represents the alveolus bone lining the socket
Contains six branches that supply blood to the pharynx muscles - soft palate tonsils - the posterior of the tongue - sub mandibular gland - muscles of the face - nasal septom - nose and the eyelids

22. Mylohyoid Artery
Extreme variations from the norm
Branches off the inferior alveolar artery before intering the mandibular canal
Excess dryness of the mouth
Palatoglossus - palatopharyngeal

23. Internal Jugular Vein
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Draws down the mandible and corners of the mouth
The bone that separates the root on a tooth

24. Angle of the Mandible
Tubules that pass through the entire surface of the dentin
Where the ramus meets the body of the mandible on the outside border
Biting edge of the teeth
Drains the floor of the mouth

25. External Jugular Vein
Duct located on the parotid papilla
Wearing away of the incisal or occlusal surfaces of the tooth
2 to 3 pints
Drains the superficial veins of the face and neck into the subclavian vein

26. External Auditory Meatus
Raised vertical folds of tissue on the lateral border of the tongue
Vertical groove on the midline of the upper lip
Causes a thickening of the cementum around the apex
Opening for the ear

27. Dental Arteries
Biting edge of the teeth
Retracts the tongue and raises the tip of the tongue
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Incremental lines around the layers of the enamel matrix

28. Labial Commissures
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
A period of both primary teeth and permeant teeth are in the dentition
The corners of the mouth where the top and bottom lip meet
When the dentin is exposed

29. Agenesis
Located on the inside of the body of the ramus
Drains the Pterygoid plexus of the veins
A line that represents the alveolus bone lining the socket
Occurs in unusual ways and distorted crowns may appear

30. Muscle origine
The fixed attachment of a muscle
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Creates the wall of the dentinal tubule
Incremental lines around the layers of the enamel matrix

31. Lingual
Forms the bulk of the tooth
Rounded depression on a tooth
Elevated are of enamel that forms the Mesial and distal borders
Inside surface Which is towards the tongue - on anterior teeth

32. Uvula
Responsible for laying down the enamel matrix into place
Occlusal surface of the posterior tooth
Maxillary first molar
A projection that extends off the back of the soft palate

33. Stomedeum
Found only in multi-rooted teeth and resists rotational forces
Primitive mouth
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
Lift the hyoid bone and assist in opening the mouth

34. How is the TMJ supported and what controls their movement?
Ligaments and muscles of mastication
Responsible for laying down the enamel matrix into place
Hinge motion and gliding movement
Resist rotational forces and hold teeth in inter-proximal contact

35. Inferior Alveolar Artery
A junction or center of veins that directly or indirectly drain a vast area
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Retracts or depresses the tongue
A triangular area located behind the last molar

36. Embryo
Tissue covering the alveolar processes
Two
The development of different forms
Two weeks thru 8th week

37. What are the 4 taste senses and where are they located?
Set of arches found farther in the back of the throat
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Maxillary third molar
Triangular space in the gingival direction when two adjacent teeth are in contact

38. Dentinal Hypersensitivity
When the dentin is exposed
Substances between cells
Occlusal surface of the posterior tooth
4th week

39. What are the 3 branches of the mandibular nerve branch?
Portion of the root seen in the oral cavity
Creates the wall of the dentinal tubule
Buccal - lingual - and inferior alveolar
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

40. Circumvallate Papillae
Act to maintain the gingival integrity of the marginal gingiva
Chewing and swallowing food
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Tissue fluid surrounding the cell membrane of the odontoblast

41. Alveolus
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Bone that surrounds the root of the tooth
The inner surface of the cheeks
Aid in attaching the gingiva to the alveolar bone

42. Free Gingiva
Mastication - aids in speech - influence facial structure - chewing surfaces
(free gingiva) surrounds the teeth
The portion of the tooth that meets the gingiva
Located behind the ramus of the mandible and branches into five arteries

43. Zygomatic nerve
Opening for the ear
Supplies blood to the roots and periodontal ligaments of the interior teeth
Synovial fluid
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch

44. Mesial
Two
Synovial fluid
Surface towards the midline
Quarters of the teeth

45. Facial Vein
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 development of different cells
Composed of mucosa and surrounds the necks of the teeth
Drains the facial structures beginning near the eye and descending toward the mandible

46. What are the only permeant teeth that are not succedaneous?
Small bony projections surrounding the lingual foramen
Supplies blood to the brain and the eyes
Molars
Platysma - trapezius - sternocleidomastoid

47. What is the smallest tooth in dentition?
The layer of dentin that surrounds the pulp
Papillae that give the tongue the strawberry effect
Mandibular central incisors
Occurs in unusual ways and distorted crowns may appear

48. Symphysis
Origin - fixed point - insertion - movable point
Dentin found between the tubules
Dividing point of a multi-rooted tooth
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface

49. Hard Palate
Teeth will not erupt in proper position
Incremental lines around the layers of the enamel matrix
Narrow long enamel tuft
A bony plate covered with keratinized tissue located in the anterior portion of the palate

50. Pit
The area on the crown of the tooth that is nearest the gingival
Second teeth next to central incisors
Opening for the ear
Place where the groove comes together or fissures cross