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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. Glenoid Fossa
Divides the crown and the root
Enamel is thinner - pulp chamber is smaller -
Oval depression of temporal bone in condyloid process
9 months (5 months ultrasound to tell sex)

2. Alveolus
Greater - lesser - naso palatine nerves
Supplies blood to the brain and the eyes
Found only in multi-rooted teeth and resists rotational forces
Bone that surrounds the root of the tooth

3. Imbracation Lines
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Raised vertical folds of tissue on the lateral border of the tongue
Small curved lines that run parellel to the CEJ
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone

4. Pulpitis
Full deep rich sound in nasal cavity
Elevates the posterior portion of the tongue and narrows the fauces
Follows the length of the body of the mandible past the last tooth and up to the ramus
When the tissue becomes inflamed

5. Buccal
Formed by the uniting of lobes during development of crown
Elevated are of enamel that forms the Mesial and distal borders
32
Outside surface Which is towards the cheek - on posterior teeth

6. Duct
Canal or passage for fluid
Conception thru the first two weeks
Band of fibrous tissue which attaches bone to bone
9 months (5 months ultrasound to tell sex)

7. External Auditory Meatus
Mandibular central incisors
Band of fibrous tissue which attaches muscle to bone
Small head - low nasal bridge - thin upper lip - small mandible
Opening for the ear

8. How much saliva is produced daily?
Upper arch of the teeth
1500 millimeters
The development of different cells
Study of the structure and form of the teeth

9. Sublingual Caruncles
2 small raised folds of tissue where the lingual frenum attaches
Stained growth rings in dentin
A pocket formed by the soft tissue of cheeks and gingiva
Drains the Pterygoid plexus of the veins

10. Anterior Tonsillar Pillar
Excess bone formations under the tongue on the alvellar bone
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Assist in the movement and functioning of the tongue
Function to resist rotational forces and tilting

11. Periodontal Ligaments
Functions the same as the alveolar cfg; originate in alveolar bone
A period of both primary teeth and permeant teeth are in the dentition
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
Formed by the fibroblast cells and secures the tooth in the socket

12. Central Incisor
Origin - fixed point - insertion - movable point
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Middle two teeth in the mouth
Natural teeth in position

13. Stensens' Duct (aka Parotid)

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14. Fetus
Buccal - lingual - and inferior alveolar
4 cusps/ bifurcated
9 weeks thru birth
Maxillary first molar

15. Interdental Ligament Group
Origin - fixed point - insertion - movable point
Resist rotational forces and hold teeth in inter-proximal contact
The space between the unattached gingiva and the tooth
Aid in attaching the gingiva to the alveolar bone

16. Retro Mandibular Vein
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Formed by the fibroblast cells and secures the tooth in the socket
Drains the maxiallary artery and superficial temporal arteries

17. Symphysis
Appears to be loosely attached - covering the alveolar bone.
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
An overgrowth of the gingival tissue
Convex area on the lingual surface near gingiva

18. Muscle origine
Portion of the root seen in the oral cavity
The fixed attachment of a muscle
To dissolve
Depresses the tongue

19. Function of Platysma
Draws down the mandible and corners of the mouth
Study of the structure and form of the teeth
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
A shallow v-shaped depression located below the bottom of the nose and above the lips

20. Resonance
The bone that separates the root on a tooth
Full deep rich sound in nasal cavity
Two
Resist rotational forces and hold teeth in inter-proximal contact

21. Free Gingiva
Cells that form dentin
A triangular area located behind the last molar
The portion of the tooth that meets the gingiva
Drains the maxiallary artery and superficial temporal arteries

22. How is the TMJ supported and what controls their movement?
Supplies blood to the roots and periodontal ligaments of the interior teeth
Ligaments and muscles of mastication
Occlusal surface of the posterior tooth
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

23. Mandibular Artery
The connective tissue of the marginal gingiva
6 years old
Assists in elevating the chin
Located behind the ramus of the mandible and branches into five arteries

24. Denticion
Natural teeth in position
Platysma - trapezius - sternocleidomastoid
Triferacated
Formed by the uniting of lobes during development of crown

25. Function of Styloglossus
Retracts the tongue and raises the tip of the tongue
Surface towards the midline
Layers of tooth tissue become calcified
Opening in the mouth below the orbit on the maxillary bone

26. Cusp of Caribelli
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
The groove below the lower lips that separates the lips from the chin
Covers muscle tissue in the posterior portion of the palate
Forms into dentin - cementum and pulp of the teeth

27. Function of Palatoglossus
Extreme variations from the norm
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Elevates the posterior portion of the tongue and narrows the fauces
Conception thru the first two weeks

28. Dentogingival Fiber Groups
The disc becomes displaced
A flap of tissue on the on the buccal mucosa
Act to maintain the gingival integrity of the marginal gingiva
Dividing point of a multi-rooted tooth

29. Torus
The ridges that run horizontally across the hard palate behind the incisive papilla
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Interdental ligament
Excess bone in the middle of the palate

30. Fetal Alcohol Syndrome symptons
Small head - low nasal bridge - thin upper lip - small mandible
Mastication - aids in speech - influence facial structure - chewing surfaces
Greater - lesser - naso palatine nerves
10 days

31. Hypercementosis
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Two
Causes a thickening of the cementum around the apex

32. Pterygoid plexus of the veins
A junction or center of veins that directly or indirectly drain a vast area
A line of tissue that extends from the tongue to the floor of the mouth
Functions the same as the alveolar cfg; originate in alveolar bone
When cells rapidly increase in number

33. Function of Geneoglossus?
Retracts or depresses the tongue
Two weeks thru 8th week
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Middle line of the teeth

34. Hyoid Bone
Small raised projections where taste buds are located
Maxillary third molar
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
Formed by the fibroblast cells and secures the tooth in the socket

35. Labial Commissures
Corners of the mouth
Functions the same as the alveolar cfg; originate in alveolar bone
The portion of the tooth that meets the gingiva
Folds of tissue that extend horizontally from the uvula to the base of the tongue

36. Interdental Septum
Lining covers inside of the oral cavity
Linear elevation of the tooth
A bony projection that separates each socket
Two vertical extensions of the mandible

37. What are the 3 branches of the mandibular nerve branch?
Mucosa that covers the alveolar bone
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
The tip of the chin
Buccal - lingual - and inferior alveolar

38. Posterior Superior Alveolar Nerve
Curve outward
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
The cornerstone of the mouth
Two

39. How much saliva do the salivary glands produce in 24 hours?
2 to 3 pints
9 months (5 months ultrasound to tell sex)
Smaller branch that ennervates the soft palate uvula and tonsils
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

40. Genial Tubercles
A line of demarcation between the attached gingiva and alveolar mucosa
Small bony projections surrounding the lingual foramen
Extreme variations from the norm
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

41. Gingiva
Opening for the ear
A dense tissue covered with mucous membrane that can withstand chewing
Separation of the upper lip ( 1 of 1000 live births)
Located in a depressed area between the pillars

42. Salivary Glands
Folds of tissue to the the lingual veins
Looking at the border of the tongue
The development of different tissues
Secrete saliva to assist in process of digestion

43. Horizontal Fiber Group
Functions the same as the alveolar cfg; originate in alveolar bone
Secrete saliva to assist in process of digestion
Depresses the tongue
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

44. Tendon
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
The portion of the tooth that meets the gingiva
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
Band of fibrous tissue which attaches muscle to bone

45. Exfoliated
Branches off the inferior alveolar artery before intering the mandibular canal
2 small raised folds of tissue where the lingual frenum attaches
When the tissue becomes inflamed
Shed from the oral cavity

46. Maxillary Artery
Largest of the branches of the external carotid artery; supplies facial structure
Folds of tissue to the the lingual veins
The largest of three openings located in the posterior region of the hard palate
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

47. Nasolacrimal groove
Extends from the medial corner of the eye to the nasal cavity
Short tubules that seem to crossover to the enamel
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Week 12

48. Stippled
Healthy gingival tissue with an orange texture
Indented
Quarters of the teeth
The cornerstone of the mouth

49. Retromolar Area
A triangular area located behind the last molar
Secrete saliva to assist in process of digestion
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Smaller branch that ennervates the soft palate uvula and tonsils

50. Lingual Nerve Branch
Where the proximal sides of two teeth come together and touch
The disc becomes displaced
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 connective tissue of the marginal gingiva