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Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
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. Genial Tubercles
Small bony projections surrounding the lingual foramen
Inside of the maxillary teeth
Triferacated
Mastication - aids in speech - influence facial structure - chewing surfaces

2. Foliate Papillae
A dense tissue covered with mucous membrane that can withstand chewing
Excess dryness of the mouth
Upper arch of the teeth
Raised vertical folds of tissue on the lateral border of the tongue

3. Primary Dentin
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
Mastication - aids in speech - influence facial structure - chewing surfaces
Stained growth rings in dentin
Forms the bulk of the tooth

4. Enamel Dysplasia
Canal or passage for fluid
The largest of the salivary glands which lie just below and in front of the ear
When the surface of the teeth becomes grooved
Duct located on the parotid papilla

5. Cemental Spurs
Forms the bulk of the tooth
The groove below the lower lips that separates the lips from the chin
Found near the cementoenamel junction
Band of fibrous tissue which attaches muscle to bone

6. Morpho Differentiation
Forming organ takes shape and resembles the shape of a bell
Forms a large cavity above the roots of the maxillary molars
An extension of an unattached gingiva and the tooth
(free gingiva) surrounds the teeth

7. What are the extrinsic muscles of the tongue responsible for?
6 months/3years
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
H20 - mucin - organic salts and digestive enzymes
Assist in the movement and functioning of the tongue

8. Enamel Lamellae
Function to resist rotational forces and tilting
Narrow long enamel tuft
What divides the tongue in half and runs from the base to the tip of the tongue
Forms a large cavity above the roots of the maxillary molars

9. When do the tooth buds appear?
Teeth after cuspids
Week 12
Small yellowish glands on the labial mucosa
Week 11

10. Angle of the Mandible
The disc becomes displaced
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Where the ramus meets the body of the mandible on the outside border

11. Pterygoid plexus of the veins
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
A junction or center of veins that directly or indirectly drain a vast area
Incremental line indicating trauma of birth
Shed from the oral cavity

12. Mandibular Artery
A line of demarcation between the attached gingiva and alveolar mucosa
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Located behind the ramus of the mandible and branches into five arteries
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13. Stensens' Duct (aka Parotid)

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14. Occlusal
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Pulverizing or chewing surface
Lower arch of the teeth
Hinge motion and gliding movement

15. What are the 4 taste senses and where are they located?
Convex area on the lingual surface near gingiva
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Teeth will not erupt in proper position

16. Function of Sternocleidomastoid
Functions the same as the alveolar cfg; originate in alveolar bone
Branches off the inferior alveolar artery before intering the mandibular canal
The fixed attachment of a muscle
Assists in elevating the chin

17. Rod Core
Inner portion of the enamel rod
Forms the bulk of the tooth
Separates the developing oral cavities from the nasal cavities
A dense tissue covered with mucous membrane that can withstand chewing

18. What are the only permeant teeth that are not succedaneous?
When the surface of the teeth becomes grooved
Curve outward
Circle and tighten the gingival margin around the neck of the tooth
Molars

19. What are the 4 cranial nerves that ennervate the face and oral cavity
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Trigeminal - facial - glossopharyngeal - hypoglossal
Layers of tooth tissue become calcified
The connective tissue of the marginal gingiva

20. Incisive Papilla
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Orbicularis oris - buccinator - mentalis - zygomatic major
The portion of the tooth that meets the gingiva
Healthy gingival tissue with an orange texture

21. What are the two muscles of the soft palate?
Stained growth rings in dentin
Hinge motion and gliding movement
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Palatoglossus - palatopharyngeal

22. Meniscus
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Disk that acts like a cushion between the temporal bone and the condyloid process
Small raised projections where taste buds are located
Indented

23. Incisal third
Separates the developing oral cavities from the nasal cavities
A junction or center of veins that directly or indirectly drain a vast area
Digstric - Mylohyoid - stylohyoid - geniohyoid
The crown of the tooth that is nearest the incisal edge near the anterior tooth

24. Interradical Fiber Group
Portion covered with cementum
Found only in multi-rooted teeth and resists rotational forces
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Occurs in unusual ways and distorted crowns may appear

25. Central Incisor
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Layers of tooth tissue become calcified
Middle two teeth in the mouth
Primary and permanent

26. When do the primary teeth begin erupting and are fully erupted?
Place where the groove comes together or fissures cross
Inside of the maxillary teeth
Cells that form dentin
6 months/3years

27. Alveolar Mucosa
A horseshoe shaped groove that follow the curve of the dental arch
Mucosa that covers the alveolar bone
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Sharp projection on the under surface of the temporal bone

28. Mandibular Foramen
Small dark brushes
Follows the inside of the ramus and the body of the mandible
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Located on the inside of the body of the ramus

29. Styloid Process
Week 12
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Sharp projection on the under surface of the temporal bone

30. Maxillary Tuberosity
The development of different forms
A rounded area beyond the last posterior maxillary tooth
Mandibular central incisors
Demonstrates a disturbance in the body metabolism

31. Infraorbital Foramen
Opening in the mouth below the orbit on the maxillary bone
A bony plate covered with keratinized tissue located in the anterior portion of the palate
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Inner portion of the enamel rod

32. Buccal
Outside surface Which is towards the cheek - on posterior teeth
Resist rotational forces and hold teeth in inter-proximal contact
Inner portion of the enamel rod
Inside surface Which is towards the tongue - on anterior teeth

33. TMJ bones are bathed In what solution?
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Extreme variations from the norm
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Synovial fluid

34. Submandibular Glands

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35. What are the 3 branches of the mandibular nerve branch?
Mandibular central incisors
Bone that surrounds the root of the tooth
Origin - fixed point - insertion - movable point
Buccal - lingual - and inferior alveolar

36. Symphysis
Where the ramus meets the body of the mandible on the outside border
When the dentin is exposed
Small head - low nasal bridge - thin upper lip - small mandible
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface

37. How is the TMJ supported and what controls their movement?
Triferacated
Ligaments and muscles of mastication
Acts as anchors between the alveolar bone and the tooth
Hinge motion and gliding movement

38. What are the two ways the TMJs move?
Moves the head backward and laterally
Hinge motion and gliding movement
The connective tissue of the marginal gingiva
Assists in elevating the chin

39. What is saliva made of?
H20 - mucin - organic salts and digestive enzymes
Small yellowish glands on the labial mucosa
Forms into dentin - cementum and pulp of the teeth
Trigeminal nerve--because it ennervates the maxilla and the mandible

40. Sharpey's Fibers
Where the ramus meets the body of the mandible on the outside border
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Acts as anchors between the alveolar bone and the tooth
Peg shaped crown with a smooth surface

41. Stenson's Duct
Primary and permanent
Duct located on the parotid papilla
Compact bone plate of the facial and lingual surfaces
Allow flexibility during mastication - speech

42. How many cusps/ roots do the 2/3rd maxillary molars have?
1500 millimeters
Healthy gingival tissue with an orange texture
Three cusps/ trifurcated
Depresses the tongue

43. Sulingual Folds
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Cheek bones--the most breakable bone in the body
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Respiratory system - digestive system and glandular organs

44. Maxillary vein
Pulls the hyoid bone and the tongue anteriorly
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Bifurcated/ 5 cusps
Drains the Pterygoid plexus of the veins

45. Develop Mental Groove
Band of fibrous tissue which attaches muscle to bone
Follows the inside of the ramus and the body of the mandible
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

46. Mandible Arch
The bone that separates the root on a tooth
Bifurcated/ 5 cusps
Canal or passage for fluid
Lower arch of the teeth

47. Histo Differentiation
Band of fibrous tissue which attaches muscle to bone
Cells develop into different tissues
Initiation of the tooth begins
Forms after the completion of the apical foramen

48. Gestational period
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
To dissolve
6 months/3years
9 months (5 months ultrasound to tell sex)

49. External Oblique Ridge
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Follows the length of the body of the mandible past the last tooth and up to the ramus
Found only in multi-rooted teeth and resists rotational forces

50. What is the function of the buccle nerve branch?
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
An overgrowth of the gingival tissue
The internal surface at the center of the mandible
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue