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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. Apical Fiber Group
Resists forces that try to pull the tooth outward
Stained growth rings in dentin
Folds of tissue to the the lingual veins
The first predentin that is formed and matures within the tube

2. Anterior Tonsillar Pillar
Conception thru the first two weeks
The largest of the salivary glands which lie just below and in front of the ear
Primary and permanent
Folds of tissue that extend horizontally from the uvula to the base of the tongue

3. How many cusps does the second bicuspid have?
Two
Band of fibrous tissue which attaches bone to bone
Origin - fixed point - insertion - movable point
To bulge of curve outward

4. Lacrimal Bones
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Hinge motion and gliding movement
Middle line of the teeth
Separation of the upper lip ( 1 of 1000 live births)

5. Articular Disc
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Covering over the enamel that is left over from the epithelium ameloblasts
Teeth after cuspids
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

6. Succedaneous teeth
Radiates from the developmental groove
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Interdental ligament
Permeante teeth replace the primary teeth

7. Cervical line
Divides the crown and the root
Bluish veins that run the length of the tongue
The fixed attachment of a muscle
A small projection in the middle of the upper lip

8. Embryo
Two weeks thru 8th week
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Follows the length of the body of the mandible past the last tooth and up to the ramus
Chewing and swallowing food

9. Lines of Retzius
Inner portion of the enamel rod
Incremental lines around the layers of the enamel matrix
Drains the maxiallary artery and superficial temporal arteries
Primary and permanent

10. Lobes
The space between the unattached gingiva and the tooth
Developmental segment of a tooth
Forming organ takes shape and resembles the shape of a bell
Growth from the oral epithelium that gives rise to the tooth buds

11. Imbritation Lines of Von Eboner
Stained growth rings in dentin
The ridges that run horizontally across the hard palate behind the incisive papilla
Initiation of the tooth begins
Two weeks thru 8th week

12. Cusp of Caribelli
Divides the crown and the root
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Quarters of the teeth

13. Maxillary Tuberosity
A rounded area beyond the last posterior maxillary tooth
Interdental ligament
Opening in the mouth below the orbit on the maxillary bone
Short tubules that seem to crossover to the enamel

14. Mixed Dentition
Calcium salts are deposited into formed tooth
A period of both primary teeth and permeant teeth are in the dentition
Trigeminal nerve--because it ennervates the maxilla and the mandible
Genioglossus - hyoglossus - styloglossus - palatoglossus

15. Symphysis
A line of demarcation between the attached gingiva and alveolar mucosa
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
To lubricate the oral cavity and to moisten food

16. Function of Geniohyoid
Formed by the fibroblast cells and secures the tooth in the socket
Natural teeth in position
Pulls the hyoid bone and the tongue anteriorly
Primary embryonic mesoderm layer that develops during the morpho differentiation period

17. TMJ bones are bathed In what solution?
Synovial fluid
Elevates the posterior portion of the tongue and narrows the fauces
Teeth after cuspids
Orbicularis oris - buccinator - mentalis - zygomatic major

18. Bud stage
Initiation of the tooth begins
Retracts or depresses the tongue
H20 - mucin - organic salts and digestive enzymes
Intervating the anterior teeth and the labial gingiva

19. What are the eight landmarks of the face?
9 months (5 months ultrasound to tell sex)
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Functions the same as the alveolar cfg; originate in alveolar bone
Stained growth rings in dentin

20. Glenoid Fossa
The fixed attachment of a muscle
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
A faint line going from the ala of the nose to the corner of the mouth
Oval depression of temporal bone in condyloid process

21. Odontoblast
To bulge of curve outward
Resist rotational forces and hold teeth in inter-proximal contact
Pointed or rounded mounds on the crown of the tooth
Cells that form dentin

22. Neonatal line
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Incremental line indicating trauma of birth
2 to 3 pints
Looking at the border of the tongue

23. Caruncle
Fleshy elevation under the tongue
The fixed attachment of a muscle
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Two cortical bone plates that come together between each tooth

24. Cyto differentiation
The development of different cells
Small dark brushes
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
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

25. Hypercementosis
Cheek bones--the most breakable bone in the body
Triangular space in the gingival direction when two adjacent teeth are in contact
Causes a thickening of the cementum around the apex
Opening in the mouth below the orbit on the maxillary bone

26. Alveolar Crest Fiber Group
Function to resist rotational forces and tilting
Forms after the completion of the apical foramen
The groove below the lower lips that separates the lips from the chin
Occlusal surface of the posterior tooth

27. Peg lateral
Pulls the hyoid bone and the tongue anteriorly
Composed of mucosa and surrounds the necks of the teeth
Band of fibrous tissue which attaches bone to bone
Peg shaped crown with a smooth surface

28. Fordyce's Spots
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
The first predentin that is formed and matures within the tube
Small yellowish glands on the labial mucosa
The tip of the chin

29. Cleft Uvula
Where the ramus meets the body of the mandible on the outside border
Supplies blood to the brain and the eyes
Mildest form of cleft palate
Natural teeth in position

30. Cemental Spurs
The space between the unattached gingiva and the tooth
Orbicularis oris - buccinator - mentalis - zygomatic major
Found near the cementoenamel junction
Two

31. Genial Tubercles
Supplies blood to the roots and periodontal ligaments of the interior teeth
Small bony projections surrounding the lingual foramen
Drains the superficial veins of the face and neck into the subclavian vein
Respiratory system - digestive system and glandular organs

32. When does the maxillary first molar erupt?
A rounded area beyond the last posterior maxillary tooth
6 years old
Layers of tooth tissue become calcified
A condition where the lower frenum attachment is very short/DDS/frenectomy

33. When does the maxillary second molar erupt?
The mandibular molars
12 years
Covers muscle tissue in the posterior portion of the palate
The development of different tissues

34. Incisal third
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Extends from the mucogingival junction to the gingival groove
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

35. Embryology
Band of fibrous tissue which attaches muscle to bone
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Cells that form dentin
Study of prenatal growth and the developing process of an individual

36. Function of Platysma
Draws down the mandible and corners of the mouth
Assist in the movement and functioning of the tongue
Linear elevation of the tooth
The development of different forms

37. What is the purpose of saliva?
To lubricate the oral cavity and to moisten food
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
The gingiva in the floor of the gingival sulcus that attaches to the enamel

38. What are the intrinsical muscles of the tongue responsible for?
Convex area on the lingual surface near gingiva
Covers muscle tissue in the posterior portion of the palate
Radiates from the developmental groove
Shaping the tongue during speech - mastication and swallowing

39. Pulp Stones
Calcified masses of dentin
Mastication - aids in speech - influence facial structure - chewing surfaces
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Band of fibrous tissue which attaches bone to bone

40. Stenson's Duct
Duct located on the parotid papilla
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Covering over the enamel that is left over from the epithelium ameloblasts
Incremental lines around the layers of the enamel matrix

41. Central Incisor
Conception thru the first two weeks
Middle two teeth in the mouth
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

42. When do oral and nasal cavity separate and palate develop?
Excess bone formations under the tongue on the alvellar bone
Cells From which connective tissue evolve
Mildest form of cleft palate
Week 12

43. How many teeth are in the Primary teeth?
Scroll like bones outside the nasal cavaties
Tissue covering the alveolar processes
20
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

44. Naso Palatine Nerve
The largest of three openings located in the posterior region of the hard palate
Mildest form of cleft palate
Vertical groove on the midline of the upper lip
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

45. Cortical Bone
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
Compact bone plate of the facial and lingual surfaces
A line that represents the alveolus bone lining the socket
Pointed or rounded mounds on the crown of the tooth

46. Endoderm
Maxillary first molar
Molars
Respiratory system - digestive system and glandular organs
Extreme variations from the norm

47. Mesial
The connective tissue of the marginal gingiva
20
Greater - lesser - naso palatine nerves
Surface towards the midline

48. Facial Artery
Sharp projection on the under surface of the temporal bone
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
An overgrowth of the gingival tissue
Looking at the border of the tongue

49. Occlusion third
Small curved lines that run parellel to the CEJ
Occlusal surface of the posterior tooth
Smaller branch that ennervates the soft palate uvula and tonsils
Outside surface Which is towards the lips

50. Nasolacrimal groove
Extends from the medial corner of the eye to the nasal cavity
Calcium salts are deposited into formed tooth
Bone that surrounds the root of the tooth
Responsible for laying down the enamel matrix into place