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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.
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. Posterior Tonsillar Pillar
Forms a large cavity above the roots of the maxillary molars
Set of arches found farther in the back of the throat
Two weeks thru 8th week
The inner surface of the cheeks

2. Purpose of premolars
Molaris meaning millstone
Composed of mucosa and surrounds the necks of the teeth
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Used to pulverize food

3. What is origin and What is insertion?
Teeth after cuspids
Layers of tooth tissue become calcified
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
Origin - fixed point - insertion - movable point

4. How many cusps/ roots do the 2/3rd maxillary molars have?
Buccal - lingual - and inferior alveolar
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Set of arches found farther in the back of the throat
Three cusps/ trifurcated

5. Vestibule Fornix
The deepest point of the vestibule
4th week
Small head - low nasal bridge - thin upper lip - small mandible
Tissue fluid surrounding the cell membrane of the odontoblast

6. Pterygoid plexus of the veins
Cheek bones--the most breakable bone in the body
Platysma - trapezius - sternocleidomastoid
Stained growth rings in dentin
A junction or center of veins that directly or indirectly drain a vast area

7. Which molar is the wisdom tooth
A bat shaped bone which forms the anterior portion of the skull
The study of the microscopic structure and functions of tissues
A triangular area located behind the last molar
Maxillary third molar

8. Alveolus
Bone that surrounds the root of the tooth
Origin - fixed point - insertion - movable point
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Study of the structure and form of the teeth

9. Lesser Palatine Foramen
A line of tissue that extends from the tongue to the floor of the mouth
Two cortical bone plates that come together between each tooth
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids

10. Mandibular Foramen
The tip of the chin
A rounded area beyond the last posterior maxillary tooth
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Located on the inside of the body of the ramus

11. Gingiva
A dense tissue covered with mucous membrane that can withstand chewing
Small curved lines that run parellel to the CEJ
Cells that form cementum
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

12. Contour Lines of Owen
Resulting from an imperfect union where the lobes come together
Demonstrates a disturbance in the body metabolism
Corners of the mouth
Scroll like bones outside the nasal cavaties

13. Secondary Dentin
6 months/3years
Forms after the completion of the apical foramen
When the tissue becomes inflamed
The development of different forms

14. Mental Protuberance
The tip of the chin
A pocket formed by the soft tissue of cheeks and gingiva
Triferacated
The portion of the tooth that meets the gingiva

15. Stippled
Convex area on the lingual surface near gingiva
Vertical groove on the midline of the upper lip
Healthy gingival tissue with an orange texture
Aid in attaching the gingiva to the alveolar bone

16. Cingulum
Dentin found between the tubules
Convex area on the lingual surface near gingiva
Arteries supplying blood to most of the head and the neck
Indented

17. Mandible Arch
The fixed attachment of a muscle
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
A flap of tissue on the on the buccal mucosa
Lower arch of the teeth

18. Dental Arteries
Supplies blood to the roots and periodontal ligaments of the molars and premolars
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
Cells From which connective tissue evolve
A horseshoe shaped groove that follow the curve of the dental arch

19. Ameloblast
Where the proximal sides of two teeth come together and touch
Enamel forming cells
Molars
Calcium salts are deposited into formed tooth

20. Bud stage
Narrow long enamel tuft
What divides the tongue in half and runs from the base to the tip of the tongue
Initiation of the tooth begins
Cluster of tissue that manufactures and secrets fluid

21. Supplemental Groove
The outer edge of the nostril
Radiates from the developmental groove
Stained growth rings in dentin
Dentin found between the tubules

22. Foliate Papillae
Band of fibrous tissue which attaches bone to bone
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Raised vertical folds of tissue on the lateral border of the tongue
Demonstrates a disturbance in the body metabolism

23. Median Sulcus
Cells From which connective tissue evolve
Scroll like bones outside the nasal cavaties
Bluish veins that run the length of the tongue
What divides the tongue in half and runs from the base to the tip of the tongue

24. How much saliva is produced daily?
1500 millimeters
Small linear depression
The portion of the tooth that meets the gingiva
Extends from the medial corner of the eye to the nasal cavity

25. Mastication
What divides the tongue in half and runs from the base to the tip of the tongue
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Chewing and swallowing food
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars

26. Ectoderm
Separation of the upper lip ( 1 of 1000 live births)
Bi-cuspids
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Inside surface Which is towards the tongue - on anterior teeth

27. Nasolacrimal groove
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Extends from the medial corner of the eye to the nasal cavity
4/5 cusps/ 3 roots
The line of demarcation between the attached gingiva and the marginal gingiva

28. lst and second premolars
Palatoglossus - palatopharyngeal
The ridges that run horizontally across the hard palate behind the incisive papilla
Teeth after cuspids
Folds of tissue to the the lingual veins

29. Enamel Spindle
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Short tubules that seem to crossover to the enamel
Trigeminal - facial - glossopharyngeal - hypoglossal
4th week

30. What is the latin word for molar?
Used to pulverize food
Dentin found between the tubules
Genioglossus - hyoglossus - styloglossus - palatoglossus
Molaris meaning millstone

31. Gland
Cluster of tissue that manufactures and secrets fluid
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Aid in attaching the gingiva to the alveolar bone
Orbicularis oris - buccinator - mentalis - zygomatic major

32. How many roots/ cusps does the mandibular first molar have?
Mastication - aids in speech - influence facial structure - chewing surfaces
Bifurcated/ 5 cusps
Pointed elongations of the pulp
Layers of tooth tissue become calcified

33. Dentinal Fluid
Tissue fluid surrounding the cell membrane of the odontoblast
Enamel is thinner - pulp chamber is smaller -
Of or pertaining to area surrounding naval cavity
Primitive mouth

34. Naso Palatine Nerve
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Tissue fluid surrounding the cell membrane of the odontoblast
Shaping the tongue during speech - mastication and swallowing
Bifurcated/ 5 cusps

35. Oblique Ridge
Tissue covering the alveolar processes
Aid in attaching the gingiva to the alveolar bone
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Molars

36. Furcation
The development of different cells
The cornerstone of the mouth
Dividing point of a multi-rooted tooth
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

37. Salivary Glands
Follows the length of the body of the mandible past the last tooth and up to the ramus
Secrete saliva to assist in process of digestion
Pointed elongations of the pulp
Week 11

38. Pulp horns
Supportive fibers that anchor the tooth to the bone
The cornerstone of the mouth
Pointed elongations of the pulp
Assist in the movement and functioning of the tongue

39. Facial development
4th week
Depresses the tongue
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Set of arches found farther in the back of the throat

40. Intercellular Substances
Bluish veins that run the length of the tongue
4th week
4/5 cusps/ 3 roots
Substances between cells

41. What is the maxillary cuspid known as?
To bulge of curve outward
Maxillary third molar
The layer of dentin that surrounds the pulp
The cornerstone of the mouth

42. Cortical Bone
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Creates the wall of the dentinal tubule
Compact bone plate of the facial and lingual surfaces
Maxillary third molar

43. Histo Differentation
Corners of the mouth
The largest of the salivary glands which lie just below and in front of the ear
The development of different tissues
To lubricate the oral cavity and to moisten food

44. External Jugular Vein
Dividing point of a multi-rooted tooth
Inner portion of the enamel rod
Drains the superficial veins of the face and neck into the subclavian vein
The slightly raised line extending down the middle of the hard palate

45. Attached Gingiva
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
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Extends from the mucogingival junction to the gingival groove
Opening for the ear

46. Fetal Alcohol Syndrome symptons
Small head - low nasal bridge - thin upper lip - small mandible
Two weeks thru 8th week
4/5 cusps/ 3 roots
Moves the head backward and laterally

47. Morphology
Study of the structure and form of the teeth
Sharp projection on the under surface of the temporal bone
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Fifth cusp located on the mesial surface lingual surface of maxillary first molars

48. Fissure
Used to pulverize food
Appears to be loosely attached - covering the alveolar bone.
Resulting from an imperfect union where the lobes come together
Lift the hyoid bone and assist in opening the mouth

49. Alveolar Mucosa
Mucosa that covers the alveolar bone
Joined at the midline and are often referred to as the median Palatine suture
(free gingiva) surrounds the teeth
Corners of the mouth

50. Denticion
Aid in attaching the gingiva to the alveolar bone
Draws the hyoid bone superiorly and posteriorly and stabilizes it
A triangular area located behind the last molar
Natural teeth in position