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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. Pterygoid Artery
Found near the cementoenamel junction
Raised vertical folds of tissue on the lateral border of the tongue
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Excess bone formations under the tongue on the alvellar bone

2. Anterior Tonsillar Pillar
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Covering over the enamel that is left over from the epithelium ameloblasts
4 cusps/ bifurcated
To dissolve

3. What is the longest tooth in the mandibular arch?
Demonstrates a disturbance in the body metabolism
The connective tissue of the marginal gingiva
The mandibular first premolar
Cut - tear - and grind food

4. What are the eight landmarks of the face?
H20 - mucin - organic salts and digestive enzymes
Disk that acts like a cushion between the temporal bone and the condyloid process
The groove below the lower lips that separates the lips from the chin
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

5. How much saliva do the salivary glands produce in 24 hours?
Sharp projection on the under surface of the temporal bone
Primary and permanent
2 to 3 pints
Retracts the tongue and raises the tip of the tongue

6. Furcation
Buccal - lingual - and inferior alveolar
To lubricate the oral cavity and to moisten food
Dividing point of a multi-rooted tooth
Used to pulverize food

7. Enamel Spindle
The teeth located at the back of the mouth
Opening in the mouth below the orbit on the maxillary bone
Short tubules that seem to crossover to the enamel
The disc becomes displaced

8. Contact Area
Depresses the tongue
Where the proximal sides of two teeth come together and touch
Trigeminal - facial - glossopharyngeal - hypoglossal
Separation of the upper lip ( 1 of 1000 live births)

9. Maxillary vein
Drains the superficial veins of the face and neck into the subclavian vein
Follows the inside of the ramus and the body of the mandible
9 months (5 months ultrasound to tell sex)
Drains the Pterygoid plexus of the veins

10. Embryology
Study of prenatal growth and the developing process of an individual
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
6 months/3years
Rounded depression on a tooth

11. Imbrication lines
Biting edge of the teeth
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Drains the facial structures beginning near the eye and descending toward the mandible
Located behind the ramus of the mandible and branches into five arteries

12. Soft Palate
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
Covers muscle tissue in the posterior portion of the palate
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Enamel is thinner - pulp chamber is smaller -

13. What is the largest cranial nerve and the most important to dental auxillaries and why?
4th week
Drains the Pterygoid plexus of the veins
A bony projection that separates each socket
Trigeminal nerve--because it ennervates the maxilla and the mandible

14. Incisive Nerve branch
Intervating the anterior teeth and the labial gingiva
Healthy gingival tissue with an orange texture
2 small raised folds of tissue where the lingual frenum attaches
Enamel forming cells

15. Posterior Teeth
The teeth located at the back of the mouth
4 cusps/ bifurcated
Mastication - aids in speech - influence facial structure - chewing surfaces
Corners of the mouth

16. Mental Artery
Excess dryness of the mouth
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Function to resist rotational forces and tilting
Found only in multi-rooted teeth and resists rotational forces

17. Common Carotid
Small curved lines that run parellel to the CEJ
Arteries supplying blood to most of the head and the neck
Outside surface Which is towards the cheek - on posterior teeth
Mastication - aids in speech - influence facial structure - chewing surfaces

18. Lacrimal Bones
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
9 weeks thru birth
Surface towards the midline

19. When do oral and nasal cavity separate and palate develop?
Drains the maxiallary artery and superficial temporal arteries
Supplies blood to the face and oral cavity
A line of demarcation between the attached gingiva and alveolar mucosa
Week 12

20. Dental Sac
An enclosed area that matures into dentin - cementum and pulp
The gingiva in the floor of the gingival sulcus that attaches to the enamel
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 shallow v-shaped depression located below the bottom of the nose and above the lips

21. What kind of root does the maxillary first molar have?
A bony projection that separates each socket
Triferacated
Resists forces that try to pull the tooth outward
Forms a large cavity above the roots of the maxillary molars

22. Mesenchyme Tissue
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Tissue covering the alveolar processes
The cornerstone of the mouth

23. Incisive Arteries
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Supplies blood to the roots and periodontal ligaments of the interior teeth
When the surface of the teeth becomes grooved
Clear fluid secreted by the salivary and mucous glands throughout the mouth

24. What are the characteristics of permanent teeth?
Enamel is thinner - pulp chamber is smaller -
Shaping the tongue during speech - mastication and swallowing
Three cusps/ trifurcated
Calcium salts are deposited into formed tooth

25. Ameloblast
Enamel forming cells
Opening for the ear
Creates the wall of the dentinal tubule
Small bony projections surrounding the lingual foramen

26. Free Gingiva
The connective tissue of the marginal gingiva
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Shed from the oral cavity
The portion of the tooth that meets the gingiva

27. Tendon
Genioglossus - hyoglossus - styloglossus - palatoglossus
Assist in the movement and functioning of the tongue
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Band of fibrous tissue which attaches muscle to bone

28. Stomedeum
Primitive mouth
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Two weeks thru 8th week
Conception thru the first two weeks

29. What are the 3 branches of the mandibular nerve branch?
A small projection in the middle of the upper lip
Initiation of the tooth begins
Buccal - lingual - and inferior alveolar
Forms into dentin - cementum and pulp of the teeth

30. Mandibular Artery
Teeth will not erupt in proper position
Radiates from the developmental groove
Small grooves noted on some teeth
Located behind the ramus of the mandible and branches into five arteries

31. Function of Hyoglossus
Depresses the tongue
Act to maintain the gingival integrity of the marginal gingiva
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Opening in the mouth below the orbit on the maxillary bone

32. Greater Palatine Nerve
The internal surface at the center of the mandible
Pulverizing or chewing surface
Small grooves noted on some teeth
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

33. If Palate not fused
Teeth will not erupt in proper position
4 cusps/ bifurcated
A bony projection that separates each socket
2 to 3 pints

34. Posterior Tonsillar Pillar
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
The disc becomes displaced
Set of arches found farther in the back of the throat
Calcified masses of dentin

35. Anomalies
Extreme variations from the norm
A rounded area beyond the last posterior maxillary tooth
When cells rapidly increase in number
Teeth after cuspids

36. Contour Lines of Owen
Small raised projections where taste buds are located
Bluish veins that run the length of the tongue
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Demonstrates a disturbance in the body metabolism

37. Maxillary Sinus
Interdental ligament
The mandibular first premolar
Largest of the branches of the external carotid artery; supplies facial structure
Forms a large cavity above the roots of the maxillary molars

38. Enamel Lamellae
Stained growth rings in dentin
The inner surface of the cheeks
Narrow long enamel tuft
Largest division of the trigeminal nerve

39. What are the 4 taste senses and where are they located?
4/5 cusps/ 3 roots
32
Two vertical extensions of the mandible
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

40. What are the only permeant teeth that are not succedaneous?
Tissue fluid surrounding the cell membrane of the odontoblast
Causes a thickening of the cementum around the apex
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Molars

41. What is the function of the buccle nerve branch?
The disc becomes displaced
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Forms the remaining 2/3 of the hard and soft palate uvula
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars

42. Function of mylohyoid
Bluish veins that run the length of the tongue
Assist in depressing the mandible and elevating the tongue
Lift the hyoid bone and assist in opening the mouth
Elevated are of enamel that forms the Mesial and distal borders

43. Taste Buds
Oval structures that are located on the dorsal surface of the tongue
Depresses the tongue
A bony projection that separates each socket
Permeante teeth replace the primary teeth

44. How much saliva is produced daily?
Used to pulverize food
1500 millimeters
The bone that separates the root on a tooth
Middle line of the teeth

45. Succedaneous teeth
Inner portion of the enamel rod
Drains the maxiallary artery and superficial temporal arteries
Portion of the lips where the skin meets the vermilion zone
Permeante teeth replace the primary teeth

46. Cuspid
Forms the remaining 2/3 of the hard and soft palate uvula
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Tissue fluid surrounding the cell membrane of the odontoblast
Third tooth from the midline

47. Internal Carotid Artery
The internal surface at the center of the mandible
Supplies blood to the brain and the eyes
Occurs in unusual ways and distorted crowns may appear
Layers of tooth tissue become calcified

48. Salivary Glands
Secrete saliva to assist in process of digestion
Lining covers inside of the oral cavity
The groove below the lower lips that separates the lips from the chin
4 cusps/ bifurcated

49. Osteoclasts
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Moves the head backward and laterally
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

50. Stippled
The deepest point of the vestibule
Healthy gingival tissue with an orange texture
Quarters of the teeth
Oval depression of temporal bone in condyloid process