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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. Articular Disc
The layer of dentin that surrounds the pulp
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
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
When the dentin is exposed

2. Labial Mucosa
An overgrowth of the gingival tissue
The inner surface of the lips
Portion covered with cementum
Surface away from the midline

3. Greater Palatine Foramen
Located behind the ramus of the mandible and branches into five arteries
Primitive mouth
Inside of the maxillary teeth
The largest of three openings located in the posterior region of the hard palate

4. Circular Ligament Fiber Groups
Sharp projection on the under surface of the temporal bone
Circle and tighten the gingival margin around the neck of the tooth
The cornerstone of the mouth
Assist in depressing the mandible and elevating the tongue

5. Fissure
The deepest point of the vestibule
Initiation of the tooth begins
Resulting from an imperfect union where the lobes come together
Palatoglossus - palatopharyngeal

6. Vestibule Fornix
Conception thru the first two weeks
The deepest point of the vestibule
Small yellowish glands on the labial mucosa
Platysma - trapezius - sternocleidomastoid

7. Sharpey's Fibers
Ligaments and muscles of mastication
Used to pulverize food
Acts as anchors between the alveolar bone and the tooth
Assists in elevating the chin

8. Interdental Gingiva
Small raised projections where taste buds are located
When cells rapidly increase in number
An extension of an unattached gingiva and the tooth
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

9. Dental Sac
Compact bone plate of the facial and lingual surfaces
An enclosed area that matures into dentin - cementum and pulp
Middle two teeth in the mouth
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

10. Sulingual Folds
Bony projection found on the bottom border of the temporal bone
Bicuspids
Extends from the mucogingival junction to the gingival groove
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

11. Mental Protuberance
Where the ramus meets the body of the mandible on the outside border
The tip of the chin
An overgrowth of the gingival tissue
The internal surface at the center of the mandible

12. Pit
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Portion of the lips that are red
Draws down the mandible and corners of the mouth
Place where the groove comes together or fissures cross

13. Function of Styloglossus
Separates the developing oral cavities from the nasal cavities
Circle and tighten the gingival margin around the neck of the tooth
Retracts the tongue and raises the tip of the tongue
Opening in the mouth below the orbit on the maxillary bone

14. Alveologingival Fiber Groups
Aid in attaching the gingiva to the alveolar bone
Dentin found between the tubules
Respiratory system - digestive system and glandular organs
The portion of the tooth that meets the gingiva

15. Dentinal Tubules
The fixed attachment of a muscle
Band of fibrous tissue which attaches bone to bone
Tubules that pass through the entire surface of the dentin
Where the proximal sides of two teeth come together and touch

16. Odontogenesis
Elevates the posterior portion of the tongue and narrows the fauces
Origin of the tooth
Three bulges on the incisal edge
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

17. Oblique Fiber Group
Middle two teeth in the mouth
The development of different forms
Resists intrusive forces that try to push the tooth inwards
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip

18. Resonance
Peg shaped crown with a smooth surface
Retracts the tongue and raises the tip of the tongue
A faint line going from the ala of the nose to the corner of the mouth
Full deep rich sound in nasal cavity

19. Labial Commissures
The area on the crown of the tooth that is nearest the gingival
Tissue covering the alveolar processes
Corners of the mouth
Elevates the posterior portion of the tongue and narrows the fauces

20. Convex
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
Resists intrusive forces that try to push the tooth inwards
To bulge of curve outward
Supportive fibers that anchor the tooth to the bone

21. Denticion
Buccal - lingual - and inferior alveolar
Rounded depression on a tooth
Forming organ takes shape and resembles the shape of a bell
Natural teeth in position

22. Morpho differentiation
Cells From which connective tissue evolve
The development of different forms
Follows the length of the body of the mandible past the last tooth and up to the ramus
Dentin found between the tubules

23. Ectoderm
Divides the crown and the root
Conception thru the first two weeks
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Third tooth from the midline

24. Epithelial Attachment
Folds of tissue to the the lingual veins
No bicuspids/ no 3rd molars
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Moves the head backward and laterally

25. Internal Carotid Artery
Supplies blood to the brain and the eyes
Function to resist rotational forces and tilting
Second teeth next to central incisors
Oval depression of temporal bone in condyloid process

26. What are the 4 maxillary nerve branches?
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Compact bone plate of the facial and lingual surfaces
Causes a thickening of the cementum around the apex
Found near the cementoenamel junction

27. Cortical Bone
Teeth will not erupt in proper position
Acts as anchors between the alveolar bone and the tooth
Developmental segment of a tooth
Compact bone plate of the facial and lingual surfaces

28. Lamina Propria
Found only in multi-rooted teeth and resists rotational forces
The connective tissue of the marginal gingiva
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

29. Pulp Stones
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Calcified masses of dentin
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Formed by the uniting of lobes during development of crown

30. Linea Alba
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
A junction or center of veins that directly or indirectly drain a vast area
Joined at the midline and are often referred to as the median Palatine suture
Elevates the posterior portion of the tongue and narrows the fauces

31. What are the 4 pairs of muscles of mastication!
A faint line going from the ala of the nose to the corner of the mouth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Surface towards the midline

32. Hypercementosis
Causes a thickening of the cementum around the apex
Rounded depression on a tooth
Oval depression of temporal bone in condyloid process
The teeth located at the back of the mouth

33. Rod Core
Enamel forming cells
Shed from the oral cavity
Inner portion of the enamel rod
Lower arch of the teeth

34. Primary Dentin
A dense tissue covered with mucous membrane that can withstand chewing
Elevated are of enamel that forms the Mesial and distal borders
When cells rapidly increase in number
Forms the bulk of the tooth

35. Facial Artery
Composed of mucosa and surrounds the necks of the teeth
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
Primitive mouth
Origin - fixed point - insertion - movable point

36. What is the smallest tooth in dentition?
The development of different cells
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Mandibular central incisors
Tissue fluid surrounding the cell membrane of the odontoblast

37. Rami
Calcified masses of dentin
Two vertical extensions of the mandible
2 small raised folds of tissue where the lingual frenum attaches
Clear fluid secreted by the salivary and mucous glands throughout the mouth

38. Lingual
Inside surface Which is towards the tongue - on anterior teeth
Calcified masses of dentin
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
A faint line going from the ala of the nose to the corner of the mouth

39. Torus Mandibularis
Permeante teeth replace the primary teeth
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Excess bone formations under the tongue on the alvellar bone
Located in a depressed area between the pillars

40. Gingiva
Outside surface Which is towards the cheek - on posterior teeth
10 days
Folds of tissue that extend horizontally from the uvula to the base of the tongue
A dense tissue covered with mucous membrane that can withstand chewing

41. Cusp of Caribelli
The deepest point of the vestibule
The area on the crown of the tooth that is nearest the gingival
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Separation of the upper lip ( 1 of 1000 live births)

42. What are the 3 branches of the pterygopalatine nerve branch?
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Portion of the root seen in the oral cavity
Greater - lesser - naso palatine nerves
To dissolve

43. Alveolus
Pointed elongations of the pulp
A flap of tissue on the on the buccal mucosa
Bone that surrounds the root of the tooth
Tissue fluid surrounding the cell membrane of the odontoblast

44. Ridge
Linear elevation of the tooth
Responsible for laying down the enamel matrix into place
Separates the developing oral cavities from the nasal cavities
Forms into the inner lining of the oral cavitiy and enamel of the teeth

45. Alveolar Mucosa
Appears to be loosely attached - covering the alveolar bone.
Raised vertical folds of tissue on the lateral border of the tongue
To dissolve
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct

46. What is another name for premolars?
Compact bone plate of the facial and lingual surfaces
Bi-cuspids
Cells that form dentin
Cut - tear - and grind food

47. Palantine Tonsils
Located in a depressed area between the pillars
Origin - fixed point - insertion - movable point
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Small head - low nasal bridge - thin upper lip - small mandible

48. Palatine Rugae
Compact bone plate of the facial and lingual surfaces
Supplies blood to the brain and the eyes
Digstric - Mylohyoid - stylohyoid - geniohyoid
The ridges that run horizontally across the hard palate behind the incisive papilla

49. Primary palate
9 weeks thru birth
Rounded depression on a tooth
Band of fibrous tissue which attaches muscle to bone
Separates the developing oral cavities from the nasal cavities

50. Anterior Tonsillar Pillar
Small grooves noted on some teeth
Radiates from the developmental groove
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Clear fluid secreted by the salivary and mucous glands throughout the mouth