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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 4 maxillary nerve branches?
Wearing away of the incisal or occlusal surfaces of the tooth
Forming organ takes shape and resembles the shape of a bell
Forms the bulk of the tooth
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

2. Endoderm
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Respiratory system - digestive system and glandular organs
Maxillary first molar
Origin of the tooth

3. Agenesis
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Occurs in unusual ways and distorted crowns may appear
The disc becomes displaced

4. Mastoid process
Outside surface Which is towards the cheek - on posterior teeth
Bony projection found on the bottom border of the temporal bone
Papillae that give the tongue the strawberry effect
The gingiva in the floor of the gingival sulcus that attaches to the enamel

5. Maxillary Nerve Branch
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
The first predentin that is formed and matures within the tube
Draws the hyoid bone superiorly and posteriorly and stabilizes it

6. Mamelons
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Three bulges on the incisal edge
The largest of the salivary glands which lie just below and in front of the ear

7. Lateral Incisor
Mastication - aids in speech - influence facial structure - chewing surfaces
Second teeth next to central incisors
Constricts the nasopharyngeal passage and elevates the larynx
Hinge motion and gliding movement

8. Mandibular Artery
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Follows the inside of the ramus and the body of the mandible
Located behind the ramus of the mandible and branches into five arteries
The bone that separates the root on a tooth

9. Gingival Groove
Lift the hyoid bone and assist in opening the mouth
Interdental ligament
The line of demarcation between the attached gingiva and the marginal gingiva
Oval structures that are located on the dorsal surface of the tongue

10. Internal Oblique Ridge
Orbicularis oris - buccinator - mentalis - zygomatic major
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Follows the inside of the ramus and the body of the mandible
Bone that surrounds the root of the tooth

11. Infraorbital Foramen
Stained growth rings in dentin
Opening in the mouth below the orbit on the maxillary bone
The largest of three openings located in the posterior region of the hard palate
Slight ridges on the cervical third of certain teeth that extend mesiodistally

12. Inferior Nasal Conchae
Bifurcated/ 5 cusps
Scroll like bones outside the nasal cavaties
A triangular area located behind the last molar
The connective tissue of the marginal gingiva

13. Sphenoid
Duct located on the parotid papilla
Week 12
A bat shaped bone which forms the anterior portion of the skull
Layers of tooth tissue become calcified

14. If Palate not fused
A triangular area located behind the last molar
Shaping the tongue during speech - mastication and swallowing
Teeth will not erupt in proper position
Found near the cementoenamel junction

15. Alveolar Mucosa
Functions the same as the alveolar cfg; originate in alveolar bone
Largest of the branches of the external carotid artery; supplies facial structure
Mucosa that covers the alveolar bone
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip

16. Uvula
Disk that acts like a cushion between the temporal bone and the condyloid process
Convex area on the lingual surface near gingiva
A projection that extends off the back of the soft palate
Follows the length of the body of the mandible past the last tooth and up to the ramus

17. Enamel Spindle
A horseshoe shaped groove that follow the curve of the dental arch
Short tubules that seem to crossover to the enamel
Bifurcated/ 5 cusps
Dentin found between the tubules

18. Xygote
Conception thru the first two weeks
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
The inner surface of the lips
H20 - mucin - organic salts and digestive enzymes

19. Dentinal Fluid
Permeante teeth replace the primary teeth
An extension of an unattached gingiva and the tooth
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Tissue fluid surrounding the cell membrane of the odontoblast

20. Function of mylohyoid
Teeth after cuspids
Two cortical bone plates that come together between each tooth
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Assist in depressing the mandible and elevating the tongue

21. What is the latin word for molar?
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Formed by the fibroblast cells and secures the tooth in the socket
Molaris meaning millstone
Where the ramus meets the body of the mandible on the outside border

22. Incisive Arteries
Extreme variations from the norm
A junction or center of veins that directly or indirectly drain a vast area
Molaris meaning millstone
Supplies blood to the roots and periodontal ligaments of the interior teeth

23. Posterior Teeth
Duct located on the parotid papilla
Supplies blood to the brain and the eyes
The teeth located at the back of the mouth
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

24. Horizontal Fiber Group
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Band of fibrous tissue which attaches muscle to bone
Functions the same as the alveolar cfg; originate in alveolar bone
Third tooth from the midline

25. Distal
Follows the length of the body of the mandible past the last tooth and up to the ramus
Surface away from the midline
Cells that form dentin
A horseshoe shaped groove that follow the curve of the dental arch

26. Midline
Located on the inside of the body of the ramus
Molars
Surface away from the midline
Middle line of the teeth

27. Mandible Arch
Small grooves noted on some teeth
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Lower arch of the teeth
Fifth cusp located on the mesial surface lingual surface of maxillary first molars

28. Pterygoid plexus of the veins
Smaller branch that ennervates the soft palate uvula and tonsils
A period of both primary teeth and permeant teeth are in the dentition
A junction or center of veins that directly or indirectly drain a vast area
Drains the floor of the mouth

29. Cemental Spurs
Found near the cementoenamel junction
Middle line of the teeth
Tooth emerges from gum tissue and becomes visible
Of or pertaining to area surrounding naval cavity

30. Mucogingival Junction
Constricts the nasopharyngeal passage and elevates the larynx
A line of demarcation between the attached gingiva and alveolar mucosa
Circle and tighten the gingival margin around the neck of the tooth
Two weeks thru 8th week

31. Fissure
Small curved lines that run parellel to the CEJ
Largest of the branches of the external carotid artery; supplies facial structure
Resulting from an imperfect union where the lobes come together
The internal surface at the center of the mandible

32. Nasolacrimal groove
The internal surface at the center of the mandible
A line of tissue that extends from the tongue to the floor of the mouth
Extends from the medial corner of the eye to the nasal cavity
9 weeks thru birth

33. Ridge
Linear elevation of the tooth
Follows the inside of the ramus and the body of the mandible
The moveable attachment of the muscle
Cluster of tissue that manufactures and secrets fluid

34. Common Carotid
Healthy gingival tissue with an orange texture
Arteries supplying blood to most of the head and the neck
Drains the floor of the mouth
A small projection in the middle of the upper lip

35. Proliferation
A rounded area beyond the last posterior maxillary tooth
Where the ectoderm layer matures into the enamel
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Largest division of the trigeminal nerve

36. What is the function of the buccle nerve branch?
The development of different cells
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Divides the crown and the root

37. Papilla
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Where the ramus meets the body of the mandible on the outside border
Forms the remaining 2/3 of the hard and soft palate uvula
Small raised projections where taste buds are located

38. Dentinal Hypersensitivity
Portion covered with cementum
Of or pertaining to area surrounding naval cavity
When the dentin is exposed
Acts as anchors between the alveolar bone and the tooth

39. What are the largest and strongest of the mandibular teeth
Maxillary third molar
Opening in the mouth below the orbit on the maxillary bone
The mandibular molars
Opening for the ear

40. Styloid Process
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Wings of the sphenoid bone
Sharp projection on the under surface of the temporal bone
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

41. Cusps
Pointed or rounded mounds on the crown of the tooth
The ridges that run horizontally across the hard palate behind the incisive papilla
The development of different forms
Trigeminal - facial - glossopharyngeal - hypoglossal

42. Pterygoid Artery
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Triferacated
9 weeks thru birth
Found only in multi-rooted teeth and resists rotational forces

43. Salivary Glands
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Secrete saliva to assist in process of digestion
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Respiratory system - digestive system and glandular organs

44. Maxillary Arch
Upper arch of the teeth
Synovial fluid
The portion of the tooth that meets the gingiva
Branches off the inferior alveolar artery before intering the mandibular canal

45. What kind of root does the maxillary first molar have?
Elevates the posterior portion of the tongue and narrows the fauces
Oval depression of temporal bone in condyloid process
Triferacated
Dividing point of a multi-rooted tooth

46. Apical Fiber Group
Place where the groove comes together or fissures cross
Resists forces that try to pull the tooth outward
Cells that form cementum
Trigeminal - facial - glossopharyngeal - hypoglossal

47. When do the primary teeth begin erupting and are fully erupted?
Trigeminal nerve--because it ennervates the maxilla and the mandible
6 months/3years
The deepest point of the vestibule
Tooth emerges from gum tissue and becomes visible

48. Landmarks
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Origin - fixed point - insertion - movable point
Extends from the mucogingival junction to the gingival groove
Used to pulverize food

49. Stensens' Duct (aka Parotid)

50. Quadrants
10 days
What divides the tongue in half and runs from the base to the tip of the tongue
When the tissue becomes inflamed
Quarters of the teeth