Test your basic knowledge |

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. What are the 4 muscles of the floor of the mouth?
Aid in attaching the gingiva to the alveolar bone
A pocket formed by the soft tissue of cheeks and gingiva
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Digstric - Mylohyoid - stylohyoid - geniohyoid

2. Interdental Ligament Group
The area on the crown of the tooth that is nearest the gingival
Vertical groove on the midline of the upper lip
Resist rotational forces and hold teeth in inter-proximal contact
The deepest point of the vestibule

3. Develop Mental Groove
Inner portion of the enamel rod
Formed by the uniting of lobes during development of crown
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
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

4. What is origin and What is insertion?
Origin - fixed point - insertion - movable point
A line of demarcation between the attached gingiva and alveolar mucosa
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
6 months/3years

5. Morphology
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Three cusps/ trifurcated
9 months (5 months ultrasound to tell sex)
Study of the structure and form of the teeth

6. What are the extrinsic muscles of the tongue responsible for?
A pocket formed by the soft tissue of cheeks and gingiva
A projection that extends off the back of the soft palate
Small raised projections where taste buds are located
Assist in the movement and functioning of the tongue

7. Fetus
Lining covers inside of the oral cavity
Cells From which connective tissue evolve
To bulge of curve outward
9 weeks thru birth

8. Tome's process
Responsible for laying down the enamel matrix into place
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Resulting from an imperfect union where the lobes come together
A junction or center of veins that directly or indirectly drain a vast area

9. Vermilion Border
Genioglossus - hyoglossus - styloglossus - palatoglossus
Portion of the lips where the skin meets the vermilion zone
Opening in the mouth below the orbit on the maxillary bone
Trigeminal - facial - glossopharyngeal - hypoglossal

10. Maxillary vein
Forms into dentin - cementum and pulp of the teeth
When cells rapidly increase in number
Layers of tooth tissue become calcified
Drains the Pterygoid plexus of the veins

11. Maxillary Arch
Excess dryness of the mouth
Upper arch of the teeth
The area on the crown of the tooth that is nearest the gingival
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

12. What are the intrinsical muscles of the tongue responsible for?
Shaping the tongue during speech - mastication and swallowing
The moveable attachment of the muscle
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Week 11

13. How many cusps does the second bicuspid have?
Covering over the enamel that is left over from the epithelium ameloblasts
A line of tissue that extends from the tongue to the floor of the mouth
Portion of the lips where the skin meets the vermilion zone
Two

14. Ectoderm
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Allow flexibility during mastication - speech
Excess bone formations under the tongue on the alvellar bone
Forms into the inner lining of the oral cavitiy and enamel of the teeth

15. Imbritation Lines of Von Eboner
Joined at the midline and are often referred to as the median Palatine suture
Stained growth rings in dentin
A bat shaped bone which forms the anterior portion of the skull
Interdental ligament

16. Dentinal Tubules
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Growth from the oral epithelium that gives rise to the tooth buds
Depresses the tongue
Tubules that pass through the entire surface of the dentin

17. Perikymata
Supplies blood to the roots and periodontal ligaments of the molars and premolars
1500 millimeters
Wings of the sphenoid bone
Small grooves noted on some teeth

18. Symphysis
12 years
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Located behind the ramus of the mandible and branches into five arteries
A junction or center of veins that directly or indirectly drain a vast area

19. Groove
Small linear depression
Forms after the completion of the apical foramen
A projection that extends off the back of the soft palate
Trigeminal nerve--because it ennervates the maxilla and the mandible

20. Fungiform Papillae
A line that represents the alveolus bone lining the socket
Pulverizing or chewing surface
Papillae that give the tongue the strawberry effect
What divides the tongue in half and runs from the base to the tip of the tongue

21. Resonance
Formed by the uniting of lobes during development of crown
Full deep rich sound in nasal cavity
Depresses the tongue
Developmental segment of a tooth

22. Cementoblast
Cells that form cementum
Band of fibrous tissue which attaches muscle to bone
4th week
Shed from the oral cavity

23. Inferior Nasal Conchae
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Stained growth rings in dentin
Resists intrusive forces that try to push the tooth inwards
Scroll like bones outside the nasal cavaties

24. Internal Carotid Artery
Healthy gingival tissue with an orange texture
Supplies blood to the brain and the eyes
A small projection in the middle of the upper lip
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

25. Apposition
Calcium salts are deposited into formed tooth
Band of fibrous tissue which attaches muscle to bone
Cut - tear - and grind food
Digstric - Mylohyoid - stylohyoid - geniohyoid

26. Incisive Papilla
Follows the length of the body of the mandible past the last tooth and up to the ramus
Elevates the posterior portion of the tongue and narrows the fauces
A raised area of tissue laying behind the maxillary central incisors on the hard palate
6 months/3years

27. External Oblique Ridge
Follows the length of the body of the mandible past the last tooth and up to the ramus
Bony projection found on the bottom border of the temporal bone
Resist rotational forces and hold teeth in inter-proximal contact
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

28. Marginal GIngiva
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Drains the Pterygoid plexus of the veins
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
(free gingiva) surrounds the teeth

29. Philtrum
Narrow long enamel tuft
Incremental line indicating trauma of birth
A shallow v-shaped depression located below the bottom of the nose and above the lips
Tissue covering the alveolar processes

30. Anterior Tonsillar Pillar
Bifurcated/ 5 cusps
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Located in a depressed area between the pillars

31. Retro Mandibular Vein
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
Drains the maxiallary artery and superficial temporal arteries
Bluish veins that run the length of the tongue
Assist in depressing the mandible and elevating the tongue

32. Dentinal Hypersensitivity
Appears to be loosely attached - covering the alveolar bone.
When the dentin is exposed
The first predentin that is formed and matures within the tube
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

33. Greater Palatine Nerve
The space between the unattached gingiva and the tooth
2 small raised folds of tissue where the lingual frenum attaches
The smallest of the salivary glands located on the floor of the mouth which empty into the mouth thru either the ducts of Rivinus or Bartholin
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

34. Attrition
Wearing away of the incisal or occlusal surfaces of the tooth
Cut - tear - and grind food
The bone that separates the root on a tooth
Where the proximal sides of two teeth come together and touch

35. Facial Vein
Outside surface Which is towards the lips
Synovial fluid
Elevated are of enamel that forms the Mesial and distal borders
Drains the facial structures beginning near the eye and descending toward the mandible

36. Morpho Differentiation
Forming organ takes shape and resembles the shape of a bell
Assist in depressing the mandible and elevating the tongue
Canal or passage for fluid
Short tubules that seem to crossover to the enamel

37. Tendon
Band of fibrous tissue which attaches muscle to bone
2 small raised folds of tissue where the lingual frenum attaches
Inside of the maxillary teeth
The internal surface at the center of the mandible

38. Evanesce
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
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Forms the bulk of the tooth
To dissolve

39. Sphenoid
A bat shaped bone which forms the anterior portion of the skull
When the surface of the teeth becomes grooved
Canal or passage for fluid
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

40. Circumvallate Papillae
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Indented
Excess dryness of the mouth
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

41. What is the most common problem with TMJ
The disc becomes displaced
Full deep rich sound in nasal cavity
Outside surface Which is towards the cheek - on posterior teeth
Excess bone formations under the tongue on the alvellar bone

42. What is saliva made of?
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Located in a depressed area between the pillars
Biting edge of the teeth
H20 - mucin - organic salts and digestive enzymes

43. Calcification
An overgrowth of the gingival tissue
Permeante teeth replace the primary teeth
Layers of tooth tissue become calcified
Biting edge of the teeth

44. Maxillary Tuberosity
The inner surface of the lips
The space between the unattached gingiva and the tooth
9 months (5 months ultrasound to tell sex)
A rounded area beyond the last posterior maxillary tooth

45. Gingival Hyperplasia
Portion of the root seen in the oral cavity
Portion of the lips where the skin meets the vermilion zone
An overgrowth of the gingival tissue
Study of the structure and form of the teeth

46. Hypercementosis
Causes a thickening of the cementum around the apex
12 years
Formed by the uniting of lobes during development of crown
Drains the floor of the mouth

47. Pulp Stones
Three bulges on the incisal edge
Covers muscle tissue in the posterior portion of the palate
Calcified masses of dentin
Molars

48. Embryology
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
A line of demarcation between the attached gingiva and alveolar mucosa
Study of prenatal growth and the developing process of an individual
Sharp projection on the under surface of the temporal bone

49. What are the 4 taste senses and where are they located?
Band of fibrous tissue which attaches muscle to bone
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Mandibular central incisors
Creates the wall of the dentinal tubule

50. Gums
Forms after the completion of the apical foramen
Cells that form dentin
Tissue covering the alveolar processes
Composed of mucosa and surrounds the necks of the teeth