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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 teeth are removed if overcrowding occurs?
Bi-cuspids
Supportive fibers that anchor the tooth to the bone
Bicuspids
The slightly raised line extending down the middle of the hard palate

2. Maxillary Tuberosity
Supplies blood to the roots and periodontal ligaments of the interior teeth
A rounded area beyond the last posterior maxillary tooth
Cells that form dentin
Moves the head backward and laterally

3. Histo Differentation
The development of different tissues
Found near the cementoenamel junction
Canal or passage for fluid
Responsible for laying down the enamel matrix into place

4. Mandibular Foramen
Located on the inside of the body of the ramus
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Vertical groove on the midline of the upper lip
Pointed or rounded mounds on the crown of the tooth

5. What is the latin word for molar?
Layers of tooth tissue become calcified
(free gingiva) surrounds the teeth
Molaris meaning millstone
Mandibular central incisors

6. Nasal-Labial Groove
2 to 3 pints
Resists forces that try to pull the tooth outward
Composed of mucosa and surrounds the necks of the teeth
A faint line going from the ala of the nose to the corner of the mouth

7. How much saliva do the salivary glands produce in 24 hours?
Opening in the mouth below the orbit on the maxillary bone
Lower arch of the teeth
Follows the length of the body of the mandible past the last tooth and up to the ramus
2 to 3 pints

8. Fordyce's Spots
Small yellowish glands on the labial mucosa
4th week
Surface towards the midline
An extension of an unattached gingiva and the tooth

9. Median Sulcus
What divides the tongue in half and runs from the base to the tip of the tongue
A pocket formed by the soft tissue of cheeks and gingiva
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Respiratory system - digestive system and glandular organs

10. Incisive Papilla
The tip of the chin
A bony plate covered with keratinized tissue located in the anterior portion of the palate
The area on the crown of the tooth that is nearest the gingival
A raised area of tissue laying behind the maxillary central incisors on the hard palate

11. Primary Dentin
Forms the bulk of the tooth
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Inner portion of the enamel rod
Folds of tissue that extend horizontally from the uvula to the base of the tongue

12. Gland
Forms a large cavity above the roots of the maxillary molars
Mucosa that covers the alveolar bone
Cluster of tissue that manufactures and secrets fluid
Draws the hyoid bone superiorly and posteriorly and stabilizes it

13. Embryology
Study of prenatal growth and the developing process of an individual
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
The development of different forms

14. Interdental Septum
Maxillary first molar
Pulls the hyoid bone and the tongue anteriorly
A bony projection that separates each socket
Band of fibrous tissue which attaches muscle to bone

15. Palatine Raphe
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
The slightly raised line extending down the middle of the hard palate
Located in a depressed area between the pillars
Pulverizing or chewing surface

16. What are the characteristics of deciduous teeth?
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Full deep rich sound in nasal cavity
Small linear depression
The mandibular molars

17. Labial
Follows the length of the body of the mandible past the last tooth and up to the ramus
Outside surface Which is towards the lips
A line that represents the alveolus bone lining the socket
Orbicularis oris - buccinator - mentalis - zygomatic major

18. Dentinal Tubules
Convex area on the lingual surface near gingiva
Interdental ligament
Tubules that pass through the entire surface of the dentin
32

19. What are the 4 extrinsic muscles of the tongue
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Genioglossus - hyoglossus - styloglossus - palatoglossus
Of or pertaining to area surrounding naval cavity
The development of different forms

20. Enamel Tufts
Trigeminal nerve--because it ennervates the maxilla and the mandible
The inner surface of the lips
Small dark brushes
The tip of the chin

21. Embrasure
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Biting edge of the teeth
Triangular space in the gingival direction when two adjacent teeth are in contact
Separation of the upper lip ( 1 of 1000 live births)

22. How many cusps does the second bicuspid have?
The groove below the lower lips that separates the lips from the chin
Two
The development of different forms
Forms into the inner lining of the oral cavitiy and enamel of the teeth

23. Contact Area
A small projection in the middle of the upper lip
Hinge motion and gliding movement
Where the proximal sides of two teeth come together and touch
Palatoglossus - palatopharyngeal

24. Enamel Spindle
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
1500 millimeters
6 months/3years
Short tubules that seem to crossover to the enamel

25. Interradicular Septum
The bone that separates the root on a tooth
Mandibular central incisors
H20 - mucin - organic salts and digestive enzymes
The space between the unattached gingiva and the tooth

26. Fissure
Resulting from an imperfect union where the lobes come together
Assists in elevating the chin
When the surface of the teeth becomes grooved
Supplies blood to the face and oral cavity

27. Vermilion Border
Portion of the lips where the skin meets the vermilion zone
Full deep rich sound in nasal cavity
Week 11
The layer of dentin that surrounds the pulp

28. Mental Nerve Branch
Largest division of the trigeminal nerve
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Permeante teeth replace the primary teeth
10 days

29. Enamel Lamellae
A triangular area located behind the last molar
Separation of the upper lip ( 1 of 1000 live births)
Narrow long enamel tuft
Incremental lines around the layers of the enamel matrix

30. Dentinal Hypersensitivity
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Peg shaped crown with a smooth surface
Wings of the sphenoid bone
When the dentin is exposed

31. Function of Geniohyoid
Radiates from the developmental groove
Supplies blood to the brain and the eyes
Pulls the hyoid bone and the tongue anteriorly
Forming organ takes shape and resembles the shape of a bell

32. Circumpulpal Dentin
The layer of dentin that surrounds the pulp
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
The line of demarcation between the attached gingiva and the marginal gingiva
Convex area on the lingual surface near gingiva

33. What are the 4 muscles of the floor of the mouth?
Pulls the hyoid bone and the tongue anteriorly
20
The disc becomes displaced
Digstric - Mylohyoid - stylohyoid - geniohyoid

34. Facial development
The mandibular molars
Raised vertical folds of tissue on the lateral border of the tongue
4th week
Primary embryonic mesoderm layer that develops during the morpho differentiation period

35. Which molar contains the cusp of Caribelli?
Maxillary first molar
Chewing and swallowing food
Respiratory system - digestive system and glandular organs
Lift the hyoid bone and assist in opening the mouth

36. Labial Commissures
Drains the maxiallary artery and superficial temporal arteries
Primary and permanent
The corners of the mouth where the top and bottom lip meet
Calcified masses of dentin

37. Calcification
Calcified masses of dentin
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Layers of tooth tissue become calcified
Forms the remaining 2/3 of the hard and soft palate uvula

38. Buckle groove
A shallow v-shaped depression located below the bottom of the nose and above the lips
Middle line of the teeth
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch

39. Mesoderm
Trigeminal nerve--because it ennervates the maxilla and the mandible
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Forms into dentin - cementum and pulp of the teeth
The deepest point of the vestibule

40. Sulingual Folds
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Forms into dentin - cementum and pulp of the teeth
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Band of fibrous tissue which attaches bone to bone

41. What is the largest cranial nerve and the most important to dental auxillaries and why?
Trigeminal nerve--because it ennervates the maxilla and the mandible
Moves the head backward and laterally
Mucosa that covers the alveolar bone
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar

42. What are the four main functions of deciduous teeth?
Maxillary third molar
The cornerstone of the mouth
Functions the same as the alveolar cfg; originate in alveolar bone
Mastication - aids in speech - influence facial structure - chewing surfaces

43. Genial Tubercles
Small bony projections surrounding the lingual foramen
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Allow flexibility during mastication - speech
Separation of the upper lip ( 1 of 1000 live births)

44. Alveolar Crest
Two cortical bone plates that come together between each tooth
Draws down the mandible and corners of the mouth
Origin of the tooth
Covering over the enamel that is left over from the epithelium ameloblasts

45. Cemental Spurs
Found near the cementoenamel junction
Platysma - trapezius - sternocleidomastoid
Bone that surrounds the root of the tooth
Joined at the midline and are often referred to as the median Palatine suture

46. What are the intrinsical muscles of the tongue responsible for?
20
The teeth located at the back of the mouth
Disk that acts like a cushion between the temporal bone and the condyloid process
Shaping the tongue during speech - mastication and swallowing

47. Pit
Small curved lines that run parellel to the CEJ
Place where the groove comes together or fissures cross
Origin - fixed point - insertion - movable point
The connective tissue of the marginal gingiva

48. Meniscus
A dense tissue covered with mucous membrane that can withstand chewing
Outside surface Which is towards the lips
The bone that separates the root on a tooth
Disk that acts like a cushion between the temporal bone and the condyloid process

49. Convects
When cells rapidly increase in number
Curve outward
Resists forces that try to pull the tooth outward
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle

50. External Jugular Vein
Substances between cells
The mandibular molars
Primitive mouth
Drains the superficial veins of the face and neck into the subclavian vein