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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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1. How many cusps/ roots do the 2/3rd mandibular molars have?
A flap of tissue on the on the buccal mucosa
Separates the developing oral cavities from the nasal cavities
4 cusps/ bifurcated
A junction or center of veins that directly or indirectly drain a vast area

2. Pulpitis
When the tissue becomes inflamed
An overgrowth of the gingival tissue
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
H20 - mucin - organic salts and digestive enzymes

3. Buckle groove
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Tooth emerges from gum tissue and becomes visible
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Permeante teeth replace the primary teeth

4. What are the 4 taste senses and where are they located?
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
12 years
Curve outward
The teeth located at the back of the mouth

5. Gingiva
Initiation of the tooth begins
A dense tissue covered with mucous membrane that can withstand chewing
Two
Calcium salts are deposited into formed tooth

6. Frenum
Enamel is thinner - pulp chamber is smaller -
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Short tubules that seem to crossover to the enamel
Enamel forming cells

7. External Auditory Meatus
Corners of the mouth
Quarters of the teeth
Depresses the tongue
Opening for the ear

8. What are the eight landmarks of the face?
Extends from the medial corner of the eye to the nasal cavity
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
The area on the crown of the tooth that is nearest the gingival
Supplies blood to the brain and the eyes

9. Mamelons
Three bulges on the incisal edge
Separates the developing oral cavities from the nasal cavities
Joined at the midline and are often referred to as the median Palatine suture
A dense tissue covered with mucous membrane that can withstand chewing

10. Parotid glands
Permeante teeth replace the primary teeth
Substances between cells
The largest of the salivary glands which lie just below and in front of the ear
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle

11. Sharpey's Fibers
Corners of the mouth
A line of demarcation between the attached gingiva and alveolar mucosa
Acts as anchors between the alveolar bone and the tooth
20

12. External Oblique Ridge
Follows the length of the body of the mandible past the last tooth and up to the ramus
A flap of tissue on the on the buccal mucosa
Papillae that give the tongue the strawberry effect
4 cusps/ bifurcated

13. Maxillary vein
Found near the cementoenamel junction
Quarters of the teeth
Drains the Pterygoid plexus of the veins
The layer of dentin that surrounds the pulp

14. Cusp of Caribelli
Pointed elongations of the pulp
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Portion of the root seen in the oral cavity
Scroll like bones outside the nasal cavaties

15. How much saliva do the salivary glands produce in 24 hours?
What divides the tongue in half and runs from the base to the tip of the tongue
2 to 3 pints
Oval depression of temporal bone in condyloid process
Drains the superficial veins of the face and neck into the subclavian vein

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

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17. Incisive Papilla
Separation of the upper lip ( 1 of 1000 live births)
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Shed from the oral cavity
A raised area of tissue laying behind the maxillary central incisors on the hard palate

18. Epithelial Attachment
The gingiva in the floor of the gingival sulcus that attaches to the enamel
The cornerstone of the mouth
Small linear depression
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars

19. Linea Alba
The development of different cells
Interdental ligament
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Portion of the lips that are red

20. Lingual Veins
Smaller branch that ennervates the soft palate uvula and tonsils
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Bluish veins that run the length of the tongue
Two vertical extensions of the mandible

21. What are the only permeant teeth that are not succedaneous?
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Found only in multi-rooted teeth and resists rotational forces
Covers muscle tissue in the posterior portion of the palate
Molars

22. Osteoclasts
A pocket formed by the soft tissue of cheeks and gingiva
No bicuspids/ no 3rd molars
Appears to be loosely attached - covering the alveolar bone.
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

23. What teeth are removed if overcrowding occurs?
To lubricate the oral cavity and to moisten food
Forms a large cavity above the roots of the maxillary molars
Bicuspids
Moves the head backward and laterally

24. Rami
Drains the facial structures beginning near the eye and descending toward the mandible
Week 11
Two vertical extensions of the mandible
Origin of the tooth

25. Ridge
Genioglossus - hyoglossus - styloglossus - palatoglossus
Linear elevation of the tooth
The area on the crown of the tooth that is nearest the gingival
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

26. Duct
Canal or passage for fluid
Two vertical extensions of the mandible
Circle and tighten the gingival margin around the neck of the tooth
A horseshoe shaped groove that follow the curve of the dental arch

27. Interdental Septum
Excess bone formations under the tongue on the alvellar bone
A bony projection that separates each socket
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Trigeminal nerve--because it ennervates the maxilla and the mandible

28. Dental Arteries
To lubricate the oral cavity and to moisten food
Genioglossus - hyoglossus - styloglossus - palatoglossus
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Curve outward

29. Cleft Palate
Draws the hyoid bone superiorly and posteriorly and stabilizes it
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Outside surface Which is towards the lips
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars

30. Triangular Ridge
The slightly raised line extending down the middle of the hard palate
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Pointed or rounded mounds on the crown of the tooth
Forming organ takes shape and resembles the shape of a bell

31. Concave
Indented
Secrete saliva to assist in process of digestion
Developmental segment of a tooth
Molaris meaning millstone

32. Maxillary Arch
Origin of the tooth
Incremental line indicating trauma of birth
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Upper arch of the teeth

33. Furcation
Origin - fixed point - insertion - movable point
Assist in the movement and functioning of the tongue
Dividing point of a multi-rooted tooth
To lubricate the oral cavity and to moisten food

34. Function of Hyoglossus
Small raised projections where taste buds are located
An extension of an unattached gingiva and the tooth
Depresses the tongue
The development of different forms

35. Stensens' Duct (aka Parotid)

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36. Taste Buds
Bone that surrounds the root of the tooth
Oval structures that are located on the dorsal surface of the tongue
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
(free gingiva) surrounds the teeth

37. Stippled
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Healthy gingival tissue with an orange texture
Found only in multi-rooted teeth and resists rotational forces
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

38. Vermilion Border
Surface towards the midline
Smaller branch that ennervates the soft palate uvula and tonsils
Portion of the lips where the skin meets the vermilion zone
Bicuspids

39. Function of Platysma
Draws down the mandible and corners of the mouth
Interdental ligament
Three bulges on the incisal edge
A projection that extends off the back of the soft palate

40. Nasolacrimal groove
Retracts the tongue and raises the tip of the tongue
Extends from the medial corner of the eye to the nasal cavity
Forms a large cavity above the roots of the maxillary molars
Buccal - lingual - and inferior alveolar

41. Anomalies
Allow flexibility during mastication - speech
Inner portion of the enamel rod
Extreme variations from the norm
Composed of mucosa and surrounds the necks of the teeth

42. Central Incisor
1500 millimeters
Middle two teeth in the mouth
Inside of the maxillary teeth
Indented

43. When does the maxillary first molar erupt?
6 years old
Elevates the posterior portion of the tongue and narrows the fauces
Bluish veins that run the length of the tongue
A bat shaped bone which forms the anterior portion of the skull

44. Agenesis
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Pulls the hyoid bone and the tongue anteriorly
Occurs in unusual ways and distorted crowns may appear
Quarters of the teeth

45. Gingival Hyperplasia
Bi-cuspids
An overgrowth of the gingival tissue
Largest facial bone with two sections joined at the median suture
32

46. Xygote
Separation of the upper lip ( 1 of 1000 live births)
Of or pertaining to area surrounding naval cavity
Located in a depressed area between the pillars
Conception thru the first two weeks

47. Lingual Nerve Branch
Three cusps/ trifurcated
Largest facial bone with two sections joined at the median suture
Allow flexibility during mastication - speech
Intervates the floor of the mouth the ventral side of the tongue taste buds on the anterior two thirds of the tongue and the lingual gingiva

48. External Jugular Vein
Drains the superficial veins of the face and neck into the subclavian vein
Occlusal surface of the posterior tooth
Orbicularis oris - buccinator - mentalis - zygomatic major
Resists forces that try to pull the tooth outward

49. Calcification
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Layers of tooth tissue become calcified
(free gingiva) surrounds the teeth
Study of the structure and form of the teeth

50. What are the characteristics of deciduous teeth?
Forms after the completion of the apical foramen
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Small raised projections where taste buds are located
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

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Dental Assisting: Head And Neck Anatomy

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