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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. Labial Mucosa
Aid in attaching the gingiva to the alveolar bone
Pulls the hyoid bone and the tongue anteriorly
Supplies blood to the brain and the eyes
The inner surface of the lips

2. Palantine Tonsils
Cells that form cementum
Located in a depressed area between the pillars
The area on the crown of the tooth that is nearest the gingival
Looking at the border of the tongue

3. Xerostomia
10 days
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Mandibular central incisors
Excess dryness of the mouth

4. Mylohyoid Artery
Branches off the inferior alveolar artery before intering the mandibular canal
Full deep rich sound in nasal cavity
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Excess dryness of the mouth

5. What are the 4 taste senses and where are they located?
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Largest facial bone with two sections joined at the median suture
Short tubules that seem to crossover to the enamel
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

6. Sphenoid
Two vertical extensions of the mandible
A triangular area located behind the last molar
A bat shaped bone which forms the anterior portion of the skull
Branches off the inferior alveolar artery before intering the mandibular canal

7. Muscle Insertion
The moveable attachment of the muscle
Bluish veins that run the length of the tongue
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Duct located on the parotid papilla

8. How many cusps/ roots do the 2/3rd maxillary molars have?
Conception thru the first two weeks
Three cusps/ trifurcated
The ridges that run horizontally across the hard palate behind the incisive papilla
A pocket formed by the soft tissue of cheeks and gingiva

9. Osteoclasts
Shed from the oral cavity
Located behind the ramus of the mandible and branches into five arteries
Small bony projections surrounding the lingual foramen
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

10. Incisal Edge
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Excess bone in the middle of the palate
Biting edge of the teeth
Pulverizing or chewing surface

11. What are the four major muscles of facial expression
Orbicularis oris - buccinator - mentalis - zygomatic major
Forms after the completion of the apical foramen
Portion of the lips that are red
Supplies blood to the roots and periodontal ligaments of the interior teeth

12. Articular Disc
Supplies blood to the face and oral cavity
Growth from the oral epithelium that gives rise to the tooth buds
Located on the inside of the body of the ramus
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

13. Palatine Bones
Third tooth from the midline
Tissue covering the alveolar processes
Drains the maxiallary artery and superficial temporal arteries
Joined at the midline and are often referred to as the median Palatine suture

14. Dental Sac
9 weeks thru birth
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
An enclosed area that matures into dentin - cementum and pulp
Pulverizing or chewing surface

15. Fossa
Extreme variations from the norm
Rounded depression on a tooth
Lining covers inside of the oral cavity
Bone that surrounds the root of the tooth

16. Occlusal
An extension of an unattached gingiva and the tooth
Pulverizing or chewing surface
Located behind the ramus of the mandible and branches into five arteries
Three bulges on the incisal edge

17. What are the three muscles of the neck?
Middle two teeth in the mouth
The slightly raised line extending down the middle of the hard palate
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Platysma - trapezius - sternocleidomastoid

18. Common Carotid
Where the ramus meets the body of the mandible on the outside border
Arteries supplying blood to most of the head and the neck
Resulting from an imperfect union where the lobes come together
Draws the hyoid bone superiorly and posteriorly and stabilizes it

19. Imbritation Lines of Von Eboner
Stained growth rings in dentin
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Small yellowish glands on the labial mucosa
Upper arch of the teeth

20. How much saliva do the salivary glands produce in 24 hours?
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Portion covered with cementum
The ridges that run horizontally across the hard palate behind the incisive papilla
2 to 3 pints

21. Cuspid
Third tooth from the midline
Wings of the sphenoid bone
The fixed attachment of a muscle
2 to 3 pints

22. Philtrum
Cells that form cementum
Corners of the mouth
A shallow v-shaped depression located below the bottom of the nose and above the lips
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

23. Resonance
Supplies blood to the brain and the eyes
Small raised projections where taste buds are located
Full deep rich sound in nasal cavity
The gingiva in the floor of the gingival sulcus that attaches to the enamel

24. Circumpulpal Dentin
A rounded area beyond the last posterior maxillary tooth
Cells develop into different tissues
The layer of dentin that surrounds the pulp
9 months (5 months ultrasound to tell sex)

25. Peritubular Dentin
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Creates the wall of the dentinal tubule
Layers of tooth tissue become calcified
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

26. Mandibular Artery
Surface towards the midline
Located behind the ramus of the mandible and branches into five arteries
Drains the facial structures beginning near the eye and descending toward the mandible
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

27. Cervical line
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Permeante teeth replace the primary teeth
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Divides the crown and the root

28. How many cusps/ roots do the 2/3rd mandibular molars have?
4 cusps/ bifurcated
Portion covered with cementum
Shaping the tongue during speech - mastication and swallowing
Molaris meaning millstone

29. Supplemental Groove
Radiates from the developmental groove
An enclosed area that matures into dentin - cementum and pulp
Interdental ligament
The development of different cells

30. Transverse Ridge
Inside of the maxillary teeth
Forms a large cavity above the roots of the maxillary molars
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
An overgrowth of the gingival tissue

31. Alveologingival Fiber Groups
Synovial fluid
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Canal or passage for fluid
Aid in attaching the gingiva to the alveolar bone

32. Mixed Dentition
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Cluster of tissue that manufactures and secrets fluid
6 months/3years
A period of both primary teeth and permeant teeth are in the dentition

33. Retro Mandibular Vein
Drains the maxiallary artery and superficial temporal arteries
A horseshoe shaped groove that follow the curve of the dental arch
Found near the cementoenamel junction
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

34. Xygomatic bones
Outside surface Which is towards the lips
The line of demarcation between the attached gingiva and the marginal gingiva
Triferacated
Cheek bones--the most breakable bone in the body

35. Perikymata
Synovial fluid
A period of both primary teeth and permeant teeth are in the dentition
Supplies blood to the roots and periodontal ligaments of the interior teeth
Small grooves noted on some teeth

36. Caruncle
Dividing point of a multi-rooted tooth
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Fleshy elevation under the tongue
Digstric - Mylohyoid - stylohyoid - geniohyoid

37. Which molar is the wisdom tooth
Second teeth next to central incisors
Maxillary third molar
Third tooth from the midline
Mastication - aids in speech - influence facial structure - chewing surfaces

38. Soft Palate
Largest division of the trigeminal nerve
Drains the Pterygoid plexus of the veins
Formed by the uniting of lobes during development of crown
Covers muscle tissue in the posterior portion of the palate

39. Evanesce
The largest of the salivary glands which lie just below and in front of the ear
Depresses the tongue
Act to maintain the gingival integrity of the marginal gingiva
To dissolve

40. Apposition
To bulge of curve outward
Vertical groove on the midline of the upper lip
Calcium salts are deposited into formed tooth
A pocket formed by the soft tissue of cheeks and gingiva

41. Primary palate
Separates the developing oral cavities from the nasal cavities
Primitive mouth
Developmental segment of a tooth
The connective tissue of the marginal gingiva

42. Ridge
Stained growth rings in dentin
Bifurcated/ 5 cusps
Linear elevation of the tooth
Functions the same as the alveolar cfg; originate in alveolar bone

43. Posterior Teeth
Excess dryness of the mouth
Chewing and swallowing food
Forms into dentin - cementum and pulp of the teeth
The teeth located at the back of the mouth

44. Greater Palatine Nerve
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Drains the maxiallary artery and superficial temporal arteries
Separation of the upper lip ( 1 of 1000 live births)

45. Posterior Tonsillar Pillar
Set of arches found farther in the back of the throat
The study of the microscopic structure and functions of tissues
Forms the bulk of the tooth
When the surface of the teeth becomes grooved

46. What is another name for premolars?
Bi-cuspids
32
Cells From which connective tissue evolve
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

47. Hypercementosis
Allow flexibility during mastication - speech
Tissue fluid surrounding the cell membrane of the odontoblast
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Causes a thickening of the cementum around the apex

48. What are the 4 muscles of the floor of the mouth?
Ligaments and muscles of mastication
Digstric - Mylohyoid - stylohyoid - geniohyoid
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Tooth emerges from gum tissue and becomes visible

49. Salivary Glands
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
2 small raised folds of tissue where the lingual frenum attaches
Secrete saliva to assist in process of digestion
Calcified masses of dentin

50. When do the tooth buds appear?
Demonstrates a disturbance in the body metabolism
Week 11
Elevated are of enamel that forms the Mesial and distal borders
Resist rotational forces and hold teeth in inter-proximal contact