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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. Enamel Spindle
Two vertical extensions of the mandible
Separation of the upper lip ( 1 of 1000 live births)
Short tubules that seem to crossover to the enamel
The largest of three openings located in the posterior region of the hard palate

2. Perikymata
Digstric - Mylohyoid - stylohyoid - geniohyoid
Radiates from the developmental groove
Layers of tooth tissue become calcified
Small grooves noted on some teeth

3. Enamel Tufts
A horseshoe shaped groove that follow the curve of the dental arch
Functions the same as the alveolar cfg; originate in alveolar bone
The ridges that run horizontally across the hard palate behind the incisive papilla
Small dark brushes

4. Secondary Dentin
Synovial fluid
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Cells From which connective tissue evolve
Forms after the completion of the apical foramen

5. When do the primary teeth begin erupting and are fully erupted?
Resulting from an imperfect union where the lobes come together
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
6 months/3years
Composed of mucosa and surrounds the necks of the teeth

6. Function of Geniohyoid
Where the ramus meets the body of the mandible on the outside border
Pulls the hyoid bone and the tongue anteriorly
Forms the remaining 2/3 of the hard and soft palate uvula
Occurs in unusual ways and distorted crowns may appear

7. Concave
Trigeminal nerve--because it ennervates the maxilla and the mandible
Indented
Excess dryness of the mouth
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

8. Mucosa
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Week 12
Enamel forming cells
Lining covers inside of the oral cavity

9. Imbracation Lines
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Small curved lines that run parellel to the CEJ
Two vertical extensions of the mandible
The portion of the tooth that meets the gingiva

10. Alveolus
Substances between cells
Depresses the tongue
Bone that surrounds the root of the tooth
Initiation of the tooth begins

11. Enamel Lamellae
Outside surface Which is towards the lips
Smaller branch that ennervates the soft palate uvula and tonsils
Narrow long enamel tuft
Constricts the nasopharyngeal passage and elevates the larynx

12. Cleft Uvula
4 cusps/ bifurcated
Mildest form of cleft palate
Small head - low nasal bridge - thin upper lip - small mandible
The internal surface at the center of the mandible

13. Vermilion Border
The fixed attachment of a muscle
Portion of the lips where the skin meets the vermilion zone
The groove below the lower lips that separates the lips from the chin
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars

14. External Carotid Artery
Constricts the nasopharyngeal passage and elevates the larynx
Supplies blood to the face and oral cavity
Curve outward
An enclosed area that matures into dentin - cementum and pulp

15. Labial Commissures
A horseshoe shaped groove that follow the curve of the dental arch
A condition where the lower frenum attachment is very short/DDS/frenectomy
9 weeks thru birth
The corners of the mouth where the top and bottom lip meet

16. Middle Superior Alveolar Nerve
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Two weeks thru 8th week
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
6 months/3years

17. Primary palate
Two weeks thru 8th week
2 small raised folds of tissue where the lingual frenum attaches
6 years old
Separates the developing oral cavities from the nasal cavities

18. Philtrum
Synovial fluid
A horseshoe shaped groove that follow the curve of the dental arch
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
A shallow v-shaped depression located below the bottom of the nose and above the lips

19. Internal Oblique Ridge
The largest of the salivary glands which lie just below and in front of the ear
Resists intrusive forces that try to push the tooth inwards
Follows the inside of the ramus and the body of the mandible
Located behind the ramus of the mandible and branches into five arteries

20. Incisive Nerve branch
Inside of the maxillary teeth
Intervating the anterior teeth and the labial gingiva
Follows the length of the body of the mandible past the last tooth and up to the ramus
The layer of dentin that surrounds the pulp

21. How much saliva do the salivary glands produce in 24 hours?
Depresses the tongue
Convex area on the lingual surface near gingiva
2 to 3 pints
Place where the groove comes together or fissures cross

22. Fetus
Two cortical bone plates that come together between each tooth
Tissue fluid surrounding the cell membrane of the odontoblast
9 weeks thru birth
(free gingiva) surrounds the teeth

23. Function of Sternocleidomastoid
Short tubules that seem to crossover to the enamel
Assists in elevating the chin
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Wearing away of the incisal or occlusal surfaces of the tooth

24. Mesoderm
Forms into dentin - cementum and pulp of the teeth
Excess bone in the middle of the palate
The space between the unattached gingiva and the tooth
When the tissue becomes inflamed

25. Lingual Vein
The inner surface of the cheeks
Drains the floor of the mouth
The layer of dentin that surrounds the pulp
An extension of an unattached gingiva and the tooth

26. lst and second premolars
Teeth after cuspids
Divides the crown and the root
Largest division of the trigeminal nerve
Layers of tooth tissue become calcified

27. Histo Differentiation
A pocket formed by the soft tissue of cheeks and gingiva
2 to 3 pints
To lubricate the oral cavity and to moisten food
Cells develop into different tissues

28. Nasmyths Membrane
Covering over the enamel that is left over from the epithelium ameloblasts
Wings of the sphenoid bone
Follows the length of the body of the mandible past the last tooth and up to the ramus
Forms into dentin - cementum and pulp of the teeth

29. Interdental Gingiva
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Two
An extension of an unattached gingiva and the tooth
Where the ramus meets the body of the mandible on the outside border

30. Palantine Tonsils
Located in a depressed area between the pillars
Function to resist rotational forces and tilting
Resist rotational forces and hold teeth in inter-proximal contact
Formed by the fibroblast cells and secures the tooth in the socket

31. What are the eight landmarks of the face?
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Lining covers inside of the oral cavity
When cells rapidly increase in number

32. Dental Arteries
Small grooves noted on some teeth
Largest facial bone with two sections joined at the median suture
Separates the developing oral cavities from the nasal cavities
Supplies blood to the roots and periodontal ligaments of the molars and premolars

33. Cemental Spurs
The line of demarcation between the attached gingiva and the marginal gingiva
Assists in elevating the chin
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Found near the cementoenamel junction

34. Succedaneous teeth
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Permeante teeth replace the primary teeth
Divides the crown and the root
A pocket formed by the soft tissue of cheeks and gingiva

35. Agenesis
Occurs in unusual ways and distorted crowns may appear
A rounded area beyond the last posterior maxillary tooth
Growth from the oral epithelium that gives rise to the tooth buds
Third tooth from the midline

36. Lingual Foramen
Three bulges on the incisal edge
The internal surface at the center of the mandible
A line of tissue that extends from the tongue to the floor of the mouth
A raised area of tissue laying behind the maxillary central incisors on the hard palate

37. Soft Palate
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
Lift the hyoid bone and assist in opening the mouth
Developmental segment of a tooth
Covers muscle tissue in the posterior portion of the palate

38. What are the four major muscles of facial expression
A junction or center of veins that directly or indirectly drain a vast area
Digstric - Mylohyoid - stylohyoid - geniohyoid
Orbicularis oris - buccinator - mentalis - zygomatic major
Wearing away of the incisal or occlusal surfaces of the tooth

39. Morpho differentiation
Folds of tissue to the the lingual veins
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
The development of different forms
Linear elevation of the tooth

40. Marginal GIngiva
Act to maintain the gingival integrity of the marginal gingiva
Portion covered with cementum
Branches off the inferior alveolar artery before intering the mandibular canal
(free gingiva) surrounds the teeth

41. Lacrimal Bones
Act to maintain the gingival integrity of the marginal gingiva
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Sharp projection on the under surface of the temporal bone
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

42. What are the four main functions of deciduous teeth?
Mastication - aids in speech - influence facial structure - chewing surfaces
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Enamel is thinner - pulp chamber is smaller -
The connective tissue of the marginal gingiva

43. What are the largest and strongest of the mandibular teeth
Surface towards the midline
The development of different forms
The mandibular molars
Shaping the tongue during speech - mastication and swallowing

44. Secondary palate
Composed of mucosa and surrounds the necks of the teeth
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Forms the remaining 2/3 of the hard and soft palate uvula
Found only in multi-rooted teeth and resists rotational forces

45. Landmarks
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Two weeks thru 8th week
Cells develop into different tissues
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

46. Ala of the Nose
Permeante teeth replace the primary teeth
Resists forces that try to pull the tooth outward
A dense tissue covered with mucous membrane that can withstand chewing
The outer edge of the nostril

47. Apposition
Forming organ takes shape and resembles the shape of a bell
Forms into dentin - cementum and pulp of the teeth
Calcium salts are deposited into formed tooth
Resulting from an imperfect union where the lobes come together

48. External Jugular Vein
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
Digstric - Mylohyoid - stylohyoid - geniohyoid
Drains the superficial veins of the face and neck into the subclavian vein
Palatoglossus - palatopharyngeal

49. Stensens' Duct (aka Parotid)

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50. Quadrants
Bicuspids
Quarters of the teeth
Mucosa that covers the alveolar bone
Causes a thickening of the cementum around the apex