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Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

Instructions:

Answer 50 questions in 15 minutes.
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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. If a patient receives toxic agents - how long does it take for their sense of taste to return?
When the surface of the teeth becomes grooved
Mastication - aids in speech - influence facial structure - chewing surfaces
Opening in the mouth below the orbit on the maxillary bone
10 days

2. Greater Palatine Nerve
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Function to resist rotational forces and tilting

3. Concave
Indented
Resists forces that try to pull the tooth outward
The largest of three openings located in the posterior region of the hard palate
Bifurcated/ 5 cusps

4. Palantine Tonsils
Located in a depressed area between the pillars
Causes a thickening of the cementum around the apex
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

5. How many teeth are in the Primary teeth?
Buccal - lingual - and inferior alveolar
Two weeks thru 8th week
Functions the same as the alveolar cfg; originate in alveolar bone
20

6. Fetus
The inner surface of the cheeks
Cut - tear - and grind food
Duct located on the parotid papilla
9 weeks thru birth

7. Embryo
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Two weeks thru 8th week
To dissolve
Tubules that pass through the entire surface of the dentin

8. Xygote
Assists in elevating the chin
When cells rapidly increase in number
A bat shaped bone which forms the anterior portion of the skull
2 to 3 pints

9. Purpose of premolars
Cells that form cementum
Used to pulverize food
The connective tissue of the marginal gingiva
Forms the bulk of the tooth

10. TMJ bones are bathed In what solution?
Synovial fluid
Supplies blood to the roots and periodontal ligaments of the interior teeth
Small yellowish glands on the labial mucosa
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids

11. Marginal Ridges
Found only in multi-rooted teeth and resists rotational forces
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Ligaments and muscles of mastication
Elevated are of enamel that forms the Mesial and distal borders

12. Symphysis
Extends from the medial corner of the eye to the nasal cavity
The mandibular molars
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Folds of tissue that extend horizontally from the uvula to the base of the tongue

13. Buckle groove
An extension of an unattached gingiva and the tooth
Papillae that give the tongue the strawberry effect
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Portion of the root seen in the oral cavity

14. Xygote
Initiation of the tooth begins
Conception thru the first two weeks
The mandibular molars
Supplies blood to the roots and periodontal ligaments of the molars and premolars

15. Mesial
Rounded depression on a tooth
The development of different tissues
A line of demarcation between the attached gingiva and alveolar mucosa
Surface towards the midline

16. Stippled
Healthy gingival tissue with an orange texture
The cornerstone of the mouth
Wings of the sphenoid bone
Indented

17. Buccal
Outside surface Which is towards the cheek - on posterior teeth
Healthy gingival tissue with an orange texture
Three cusps/ trifurcated
A projection that extends off the back of the soft palate

18. Function of Geneoglossus?
Retracts or depresses the tongue
Primitive mouth
A triangular area located behind the last molar
Inside surface Which is towards the tongue - on anterior teeth

19. Alveolar Mucosa
The outer edge of the nostril
Appears to be loosely attached - covering the alveolar bone.
Small bony projections surrounding the lingual foramen
Platysma - trapezius - sternocleidomastoid

20. Vermilion Zone
The portion of the tooth that meets the gingiva
Upper arch of the teeth
Portion of the lips that are red
Week 12

21. External Carotid Artery
Supplies blood to the face and oral cavity
The disc becomes displaced
Teeth after cuspids
Ligaments and muscles of mastication

22. Cyto differentiation
The development of different cells
The fixed attachment of a muscle
The deepest point of the vestibule
Creates the wall of the dentinal tubule

23. Groove
Third tooth from the midline
Bifurcated/ 5 cusps
Retracts the tongue and raises the tip of the tongue
Small linear depression

24. Lesser Palatine Nerve
Formed by the uniting of lobes during development of crown
Smaller branch that ennervates the soft palate uvula and tonsils
Small raised projections where taste buds are located
Occurs in unusual ways and distorted crowns may appear

25. Interdental Gingiva
Oval depression of temporal bone in condyloid process
2 to 3 pints
An extension of an unattached gingiva and the tooth
Cut - tear - and grind food

26. Posterior Superior Alveolar Nerve
Demonstrates a disturbance in the body metabolism
A flap of tissue on the on the buccal mucosa
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
A dense tissue covered with mucous membrane that can withstand chewing

27. What is origin and What is insertion?
Origin - fixed point - insertion - movable point
Study of the structure and form of the teeth
When the dentin is exposed
Greater - lesser - naso palatine nerves

28. How many cusps/ roots do the maxillary first molars have?
Buccal - lingual - and inferior alveolar
4/5 cusps/ 3 roots
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
No bicuspids/ no 3rd molars

29. Anomalies
Extreme variations from the norm
A horseshoe shaped groove that follow the curve of the dental arch
Drains the Pterygoid plexus of the veins
Resulting from an imperfect union where the lobes come together

30. Gingival Groove
The teeth located at the back of the mouth
Incremental lines around the layers of the enamel matrix
The line of demarcation between the attached gingiva and the marginal gingiva
(free gingiva) surrounds the teeth

31. Function of Geniohyoid
Pulls the hyoid bone and the tongue anteriorly
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Surface towards the midline
Function to resist rotational forces and tilting

32. Calcification
Used to pulverize food
Layers of tooth tissue become calcified
Small bony projections surrounding the lingual foramen
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

33. Mesoderm
Two weeks thru 8th week
Maxillary first molar
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Forms into dentin - cementum and pulp of the teeth

34. What is the function of the buccle nerve branch?
Peg shaped crown with a smooth surface
Assist in the movement and functioning of the tongue
Hinge motion and gliding movement
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars

35. Osteoclasts
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Follows the inside of the ramus and the body of the mandible
Separation of the upper lip ( 1 of 1000 live births)
The inner surface of the lips

36. Peg lateral
Peg shaped crown with a smooth surface
Trigeminal nerve--because it ennervates the maxilla and the mandible
Looking at the border of the tongue
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

37. Function of Digastric
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Lift the hyoid bone and assist in opening the mouth

38. Enamel Lamellae
Drains the superficial veins of the face and neck into the subclavian vein
The largest of three openings located in the posterior region of the hard palate
Portion of the lips that are red
Narrow long enamel tuft

39. Histology
Study of prenatal growth and the developing process of an individual
Causes a thickening of the cementum around the apex
Drains the maxiallary artery and superficial temporal arteries
The study of the microscopic structure and functions of tissues

40. Cleft Uvula
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Drains the Pterygoid plexus of the veins
Mildest form of cleft palate
4/5 cusps/ 3 roots

41. Internal Oblique Ridge
Used to pulverize food
Enamel is thinner - pulp chamber is smaller -
Peg shaped crown with a smooth surface
Follows the inside of the ramus and the body of the mandible

42. How can you tell if someone has cancer by looking at the tongue?
The ridges that run horizontally across the hard palate behind the incisive papilla
Teeth will not erupt in proper position
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Looking at the border of the tongue

43. Greater Palatine Foramen
Opening in the mouth below the orbit on the maxillary bone
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
The largest of three openings located in the posterior region of the hard palate
The moveable attachment of the muscle

44. Perikymata
Mandibular central incisors
Small grooves noted on some teeth
Causes a thickening of the cementum around the apex
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

45. Buccal Mucosa
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
An extension of an unattached gingiva and the tooth
The inner surface of the cheeks
Elevates the posterior portion of the tongue and narrows the fauces

46. Mucogingival Junction
Surface away from the midline
Full deep rich sound in nasal cavity
A line of demarcation between the attached gingiva and alveolar mucosa
Two weeks thru 8th week

47. What are the 4 muscles of the floor of the mouth?
Digstric - Mylohyoid - stylohyoid - geniohyoid
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
A line of demarcation between the attached gingiva and alveolar mucosa
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

48. Fossa
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Rounded depression on a tooth
A pocket formed by the soft tissue of cheeks and gingiva
Dentin found between the tubules

49. Xygomatic bones
Supportive fibers that anchor the tooth to the bone
Found only in multi-rooted teeth and resists rotational forces
The layer of dentin that surrounds the pulp
Cheek bones--the most breakable bone in the body

50. Function of Sternocleidomastoid
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Assists in elevating the chin
Creates the wall of the dentinal tubule