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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. Naso Palatine Nerve
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
The inner surface of the lips
The mandibular molars
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

2. Vermilion Zone
Creates the wall of the dentinal tubule
Portion of the lips that are red
Dividing point of a multi-rooted tooth
Greater - lesser - naso palatine nerves

3. Taste Buds
Oval structures that are located on the dorsal surface of the tongue
Portion of the lips that are red
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Where the proximal sides of two teeth come together and touch

4. Cleft Lip
Separation of the upper lip ( 1 of 1000 live births)
A line that represents the alveolus bone lining the socket
Primary and permanent
Stained growth rings in dentin

5. How many cusps/ roots do the 2/3rd maxillary molars have?
An enclosed area that matures into dentin - cementum and pulp
Three cusps/ trifurcated
Where the proximal sides of two teeth come together and touch
Portion covered with cementum

6. Fissure
(free gingiva) surrounds the teeth
Maxillary first molar
Oval structures that are located on the dorsal surface of the tongue
Resulting from an imperfect union where the lobes come together

7. What are the 4 muscles of the floor of the mouth?
Resulting from an imperfect union where the lobes come together
Digstric - Mylohyoid - stylohyoid - geniohyoid
Extends from the mucogingival junction to the gingival groove
When the surface of the teeth becomes grooved

8. Pulpitis
When the tissue becomes inflamed
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
The outer edge of the nostril
An extension of an unattached gingiva and the tooth

9. Enamel Dysplasia
Raised vertical folds of tissue on the lateral border of the tongue
When the surface of the teeth becomes grooved
Shaping the tongue during speech - mastication and swallowing
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar

10. Epithelial Attachment
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Circle and tighten the gingival margin around the neck of the tooth
Forms into dentin - cementum and pulp of the teeth
Two weeks thru 8th week

11. Facial Artery
Causes a thickening of the cementum around the apex
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
1500 millimeters
Supportive fibers that anchor the tooth to the bone

12. What is the latin word for molar?
Ligaments and muscles of mastication
Molaris meaning millstone
The connective tissue of the marginal gingiva
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

13. Xygote
H20 - mucin - organic salts and digestive enzymes
The development of different forms
When cells rapidly increase in number
Bifurcated/ 5 cusps

14. Muscle Insertion
The moveable attachment of the muscle
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Extends from the mucogingival junction to the gingival groove
When the surface of the teeth becomes grooved

15. What are the four major muscles of facial expression
Shaping the tongue during speech - mastication and swallowing
Surface away from the midline
Orbicularis oris - buccinator - mentalis - zygomatic major
Bicuspids

16. Imbritation Lines of Von Eboner
A line that represents the alveolus bone lining the socket
Smaller branch that ennervates the soft palate uvula and tonsils
The largest of the salivary glands which lie just below and in front of the ear
Stained growth rings in dentin

17. Salivary Glands
Responsible for laying down the enamel matrix into place
Enamel is thinner - pulp chamber is smaller -
Third tooth from the midline
Secrete saliva to assist in process of digestion

18. Function of Geniohyoid
Intervating the anterior teeth and the labial gingiva
Pulls the hyoid bone and the tongue anteriorly
Small yellowish glands on the labial mucosa
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

19. Median Sulcus
Supportive fibers that anchor the tooth to the bone
What divides the tongue in half and runs from the base to the tip of the tongue
Enamel forming cells
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

20. Imbrication lines
Slight ridges on the cervical third of certain teeth that extend mesiodistally
A condition where the lower frenum attachment is very short/DDS/frenectomy
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

21. When does the maxillary first molar erupt?
Greater - lesser - naso palatine nerves
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
6 years old
A line that represents the alveolus bone lining the socket

22. What is another name for premolars?
Buccal - lingual - and inferior alveolar
2 small raised folds of tissue where the lingual frenum attaches
Bi-cuspids
Covers muscle tissue in the posterior portion of the palate

23. If Palate not fused
Draws down the mandible and corners of the mouth
Teeth will not erupt in proper position
Substances between cells
1500 millimeters

24. Mesenchyme Tissue
Digstric - Mylohyoid - stylohyoid - geniohyoid
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Primary embryonic mesoderm layer that develops during the morpho differentiation period
(free gingiva) surrounds the teeth

25. Frenum
Joined at the midline and are often referred to as the median Palatine suture
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Convex area on the lingual surface near gingiva
Platysma - trapezius - sternocleidomastoid

26. Enamel Lamellae
Wearing away of the incisal or occlusal surfaces of the tooth
Narrow long enamel tuft
Forms after the completion of the apical foramen
Bifurcated/ 5 cusps

27. Lesser Palatine Foramen
A flap of tissue on the 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
Pulls the hyoid bone and the tongue anteriorly
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

28. Maxillary Artery
Forms a large cavity above the roots of the maxillary molars
Largest of the branches of the external carotid artery; supplies facial structure
Forms the bulk of the tooth
Synovial fluid

29. Pterygoid Artery
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Bi-cuspids
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
When the surface of the teeth becomes grooved

30. Incisive Nerve branch
Peg shaped crown with a smooth surface
The inner surface of the lips
Bicuspids
Intervating the anterior teeth and the labial gingiva

31. What is the purpose of permanent teeth?
32
Wings of the sphenoid bone
Cut - tear - and grind food
Developmental segment of a tooth

32. How many teeth are in the Primary teeth?
20
Excess dryness of the mouth
Oval depression of temporal bone in condyloid process
Forms into dentin - cementum and pulp of the teeth

33. Central Incisor
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Three cusps/ trifurcated
Middle two teeth in the mouth
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

34. What is Ankyloglossia and who can treat it / What is the treatment called?
A condition where the lower frenum attachment is very short/DDS/frenectomy
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
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
Moves the head backward and laterally

35. External Oblique Ridge
Upper arch of the teeth
Surface away from the midline
32
Follows the length of the body of the mandible past the last tooth and up to the ramus

36. What are the 4 extrinsic muscles of the tongue
Tubules that pass through the entire surface of the dentin
Genioglossus - hyoglossus - styloglossus - palatoglossus
Pulls the hyoid bone and the tongue anteriorly
Upper arch of the teeth

37. Hypercementosis
The deepest point of the vestibule
2 small raised folds of tissue where the lingual frenum attaches
Causes a thickening of the cementum around the apex
Small bony projections surrounding the lingual foramen

38. Torus
Divides the crown and the root
Excess bone in the middle of the palate
2 to 3 pints
Found near the cementoenamel junction

39. What are the 4 cranial nerves that ennervate the face and oral cavity
Resists intrusive forces that try to push the tooth inwards
6 months/3years
Trigeminal - facial - glossopharyngeal - hypoglossal
Study of the structure and form of the teeth

40. Duct
Draws down the mandible and corners of the mouth
Mildest form of cleft palate
Canal or passage for fluid
Retracts the tongue and raises the tip of the tongue

41. Posterior Tonsillar Pillar
A shallow v-shaped depression located below the bottom of the nose and above the lips
Functions the same as the alveolar cfg; originate in alveolar bone
An extension of an unattached gingiva and the tooth
Set of arches found farther in the back of the throat

42. What are the 2 sets of teeth?
When the surface of the teeth becomes grooved
The development of different cells
Circle and tighten the gingival margin around the neck of the tooth
Primary and permanent

43. Intertubular Dentin
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Small raised projections where taste buds are located
2 to 3 pints
Dentin found between the tubules

44. Function of Platysma
Bluish veins that run the length of the tongue
Draws down the mandible and corners of the mouth
Canal or passage for fluid
Lift the hyoid bone and assist in opening the mouth

45. Rami
Resulting from an imperfect union where the lobes come together
Small raised projections where taste buds are located
Scroll like bones outside the nasal cavaties
Two vertical extensions of the mandible

46. Histo Differentation
The development of different tissues
Enamel forming cells
A line of demarcation between the attached gingiva and alveolar mucosa
A raised area of tissue laying behind the maxillary central incisors on the hard palate

47. Xerostomia
12 years
Excess dryness of the mouth
Sharp projection on the under surface of the temporal bone
Natural teeth in position

48. How many cusps/ roots do the maxillary first molars have?
Digstric - Mylohyoid - stylohyoid - geniohyoid
Maxillary third molar
4/5 cusps/ 3 roots
Two weeks thru 8th week

49. Cingulum
Occurs in unusual ways and distorted crowns may appear
Convex area on the lingual surface near gingiva
Maxillary third molar
4 cusps/ bifurcated

50. Evanesce
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Duct located on the parotid papilla
The development of different cells
To dissolve