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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. Peg lateral
Origin of the tooth
Peg shaped crown with a smooth surface
Narrow long enamel tuft
Mandibular central incisors

2. Incisal third
Narrow long enamel tuft
Excess dryness of the mouth
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Vertical groove on the midline of the upper lip

3. Philtrum
Bi-cuspids
An overgrowth of the gingival tissue
Vertical groove on the midline of the upper lip
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

4. Lingual Nerve Branch
When the surface of the teeth becomes grooved
The first predentin that is formed and matures within the tube
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
Follows the length of the body of the mandible past the last tooth and up to the ramus

5. Pterygoid Process
Wings of the sphenoid bone
Small grooves noted on some teeth
Small yellowish glands on the labial mucosa
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

6. Retromolar Area
A line that represents the alveolus bone lining the socket
Study of prenatal growth and the developing process of an individual
Maxillary first molar
A triangular area located behind the last molar

7. Alveolar Mucosa
Located behind the ramus of the mandible and branches into five arteries
Mucosa that covers the alveolar bone
Week 12
Convex area on the lingual surface near gingiva

8. Perikymata
Mandibular central incisors
Layers of tooth tissue become calcified
Small grooves noted on some teeth
Oval structures that are located on the dorsal surface of the tongue

9. How many cusps does the second bicuspid have?
Cells From which connective tissue evolve
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Bifurcated/ 5 cusps
Two

10. Circumvallate Papillae
Trigeminal nerve--because it ennervates the maxilla and the mandible
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
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
Upper arch of the teeth

11. What are the three muscles of the neck?
Platysma - trapezius - sternocleidomastoid
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Causes a thickening of the cementum around the apex
Excess bone formations under the tongue on the alvellar bone

12. Clinical root
An overgrowth of the gingival tissue
Enamel forming cells
Mucosa that covers the alveolar bone
Portion of the root seen in the oral cavity

13. If a patient receives toxic agents - how long does it take for their sense of taste to return?
Extends from the mucogingival junction to the gingival groove
10 days
Supplies blood to the roots and periodontal ligaments of the interior teeth
Bifurcated/ 5 cusps

14. What is another name for premolars?
Bi-cuspids
Inner portion of the enamel rod
Outside surface Which is towards the lips
Palatoglossus - palatopharyngeal

15. lst and second premolars
Teeth after cuspids
Wearing away of the incisal or occlusal surfaces of the tooth
A triangular area located behind the last molar
Shed from the oral cavity

16. Xygote
Conception thru the first two weeks
Incremental lines around the layers of the enamel matrix
A period of both primary teeth and permeant teeth are in the dentition
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

17. Alveolar Crest Fiber Group
Function to resist rotational forces and tilting
Portion of the lips where the skin meets the vermilion zone
Arteries supplying blood to most of the head and the neck
Pulverizing or chewing surface

18. Nasolacrimal groove
Extends from the medial corner of the eye to the nasal cavity
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Bi-cuspids
Resists intrusive forces that try to push the tooth inwards

19. Internal Carotid Artery
Wings of the sphenoid bone
Supplies blood to the brain and the eyes
Elevates the posterior portion of the tongue and narrows the fauces
Used to pulverize food

20. Mastoid process
Disk that acts like a cushion between the temporal bone and the condyloid process
Folds of tissue to the the lingual veins
Bony projection found on the bottom border of the temporal bone
Smaller branch that ennervates the soft palate uvula and tonsils

21. Epithelial Attachment
The portion of the tooth that meets the gingiva
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
No bicuspids/ no 3rd molars

22. Anterior Tonsillar Pillar
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
A condition where the lower frenum attachment is very short/DDS/frenectomy
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Forming organ takes shape and resembles the shape of a bell

23. Labial Commissures
Place where the groove comes together or fissures cross
Elevates the posterior portion of the tongue and narrows the fauces
The corners of the mouth where the top and bottom lip meet
Responsible for laying down the enamel matrix into place

24. What is the purpose of saliva?
Covers muscle tissue in the posterior portion of the palate
Portion covered with cementum
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
To lubricate the oral cavity and to moisten food

25. How much saliva is produced daily?
When the surface of the teeth becomes grooved
1500 millimeters
Draws the hyoid bone superiorly and posteriorly and stabilizes it
A period of both primary teeth and permeant teeth are in the dentition

26. Pit
Convex area on the lingual surface near gingiva
Set of arches found farther in the back of the throat
Place where the groove comes together or fissures cross
Cut - tear - and grind food

27. What are the four major muscles of facial expression
9 months (5 months ultrasound to tell sex)
Orbicularis oris - buccinator - mentalis - zygomatic major
The largest of three openings located in the posterior region of the hard palate
Portion of the lips where the skin meets the vermilion zone

28. Maxillary Sinus
Depresses the tongue
Week 11
Forms a large cavity above the roots of the maxillary molars
Teeth will not erupt in proper position

29. Contour Lines of Owen
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Demonstrates a disturbance in the body metabolism
Dividing point of a multi-rooted tooth
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

30. Cusps
Mandibular central incisors
Radiates from the developmental groove
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Pointed or rounded mounds on the crown of the tooth

31. Apposition
Calcium salts are deposited into formed tooth
Chewing and swallowing food
Largest facial bone with two sections joined at the median suture
Extends from the medial corner of the eye to the nasal cavity

32. Salivary Glands
Secrete saliva to assist in process of digestion
Mildest form of cleft palate
The study of the microscopic structure and functions of tissues
Constricts the nasopharyngeal passage and elevates the larynx

33. What are the four main functions of deciduous teeth?
Mastication - aids in speech - influence facial structure - chewing surfaces
Convex area on the lingual surface near gingiva
Located in a depressed area between the pillars
Cells From which connective tissue evolve

34. What is saliva made of?
H20 - mucin - organic salts and digestive enzymes
Healthy gingival tissue with an orange texture
Surface away from the midline
Synovial fluid

35. Ameloblast
Folds of tissue to the the lingual veins
Enamel forming cells
Opening for the ear
Mucosa that covers the alveolar bone

36. Attrition
A condition where the lower frenum attachment is very short/DDS/frenectomy
Indented
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Wearing away of the incisal or occlusal surfaces of the tooth

37. Mesenchyme Tissue
Calcium salts are deposited into formed tooth
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Middle line of the teeth
Natural teeth in position

38. What are the extrinsic muscles of the tongue responsible for?
Quarters of the teeth
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Assist in the movement and functioning of the tongue
Dentin found between the tubules

39. External Auditory Meatus
Tissue fluid surrounding the cell membrane of the odontoblast
Located in a depressed area between the pillars
Opening for the ear
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. What are the 4 muscles of the floor of the mouth?
Digstric - Mylohyoid - stylohyoid - geniohyoid
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Conception thru the first two weeks
Occurs in unusual ways and distorted crowns may appear

41. What are the characteristics of permanent teeth?
To dissolve
Separation of the upper lip ( 1 of 1000 live births)
Three cusps/ trifurcated
Enamel is thinner - pulp chamber is smaller -

42. Labial Mucosa
Molars
Forming organ takes shape and resembles the shape of a bell
The disc becomes displaced
The inner surface of the lips

43. Imbracation Lines
Small curved lines that run parellel to the CEJ
Stained growth rings in dentin
Joined at the midline and are often referred to as the median Palatine suture
Tooth emerges from gum tissue and becomes visible

44. Convex
To bulge of curve outward
Where the proximal sides of two teeth come together and touch
A triangular area located behind the last molar
Upper arch of the teeth

45. Enamel Dysplasia
When the surface of the teeth becomes grooved
To lubricate the oral cavity and to moisten food
The bone that separates the root on a tooth
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

46. Alveologingival Fiber Groups
Surface away from the midline
Aid in attaching the gingiva to the alveolar bone
Set of arches found farther in the back of the throat
Folds of tissue to the the lingual veins

47. Vestibule
Palatoglossus - palatopharyngeal
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
A pocket formed by the soft tissue of cheeks and gingiva
A horseshoe shaped groove that follow the curve of the dental arch

48. Muscle Insertion
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
The portion of the tooth that meets the gingiva
Located on the inside of the body of the ramus
The moveable attachment of the muscle

49. Saliva
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Used to pulverize food
Supplies blood to the roots and periodontal ligaments of the molars and premolars
The portion of the tooth that meets the gingiva

50. Filiform Papillae
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
An enclosed area that matures into dentin - cementum and pulp
Tissue fluid surrounding the cell membrane of the odontoblast
Synovial fluid