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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. Free Gingiva
The largest of three openings located in the posterior region of the hard palate
No bicuspids/ no 3rd molars
The portion of the tooth that meets the gingiva
The mandibular molars

2. Filiform Papillae
Creates the wall of the dentinal tubule
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Supplies blood to the face and oral cavity
The layer of dentin that surrounds the pulp

3. Lingual Veins
Drains the floor of the mouth
Incremental line indicating trauma of birth
Shed from the oral cavity
Bluish veins that run the length of the tongue

4. Maxillary Arch
Acts as anchors between the alveolar bone and the tooth
Rounded depression on a tooth
6 years old
Upper arch of the teeth

5. Attached Gingiva
Functions the same as the alveolar cfg; originate in alveolar bone
Forms a large cavity above the roots of the maxillary molars
Extends from the mucogingival junction to the gingival groove
Bone that surrounds the root of the tooth

6. Vestibule Fornix
Band of fibrous tissue which attaches bone to bone
Enamel is thinner - pulp chamber is smaller -
The deepest point of the vestibule
Extreme variations from the norm

7. What are the four main functions of deciduous teeth?
20
The study of the microscopic structure and functions of tissues
Hinge motion and gliding movement
Mastication - aids in speech - influence facial structure - chewing surfaces

8. Cuspid
Appears to be loosely attached - covering the alveolar bone.
6 years old
When cells rapidly increase in number
Third tooth from the midline

9. When do the primary teeth begin erupting and are fully erupted?
6 months/3years
Portion of the lips that are red
A bat shaped bone which forms the anterior portion of the skull
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

10. Internal Carotid Artery
Synovial fluid
The ridges that run horizontally across the hard palate behind the incisive papilla
Week 11
Supplies blood to the brain and the eyes

11. Incisal third
Interdental ligament
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
The crown of the tooth that is nearest the incisal edge near the anterior tooth
A raised area of tissue laying behind the maxillary central incisors on the hard palate

12. Lamina Dura
The largest of the salivary glands which lie just below and in front of the ear
Wearing away of the incisal or occlusal surfaces of the tooth
A line that represents the alveolus bone lining the socket
Supplies blood to the roots and periodontal ligaments of the interior teeth

13. Gestational period
The disc becomes displaced
9 months (5 months ultrasound to tell sex)
Second teeth next to central incisors
Surface towards the midline

14. Mixed Dentition
Excess bone in the middle of the palate
Shaping the tongue during speech - mastication and swallowing
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
A period of both primary teeth and permeant teeth are in the dentition

15. Distal
A projection that extends off the back of the soft palate
Surface away from the midline
Greater - lesser - naso palatine nerves
Occlusal surface of the posterior tooth

16. Cingulum
Convex area on the lingual surface near gingiva
Acts as anchors between the alveolar bone and the tooth
Enamel is thinner - pulp chamber is smaller -
Forms into the inner lining of the oral cavitiy and enamel of the teeth

17. Fetus
Forms into dentin - cementum and pulp of the teeth
9 weeks thru birth
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Set of arches found farther in the back of the throat

18. What are the 4 taste senses and where are they located?
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
The slightly raised line extending down the middle of the hard palate
Wearing away of the incisal or occlusal surfaces of the tooth
Small raised projections where taste buds are located

19. What are the four major muscles of facial expression
Functions the same as the alveolar cfg; originate in alveolar bone
Folds of tissue to the the lingual veins
Orbicularis oris - buccinator - mentalis - zygomatic major
Bicuspids

20. Ectoderm
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Drains the facial structures beginning near the eye and descending toward the mandible
Calcified masses of dentin
The portion of the tooth that meets the gingiva

21. What teeth do the deciduous (baby) tooth not include?
Depresses the tongue
Demonstrates a disturbance in the body metabolism
A triangular area located behind the last molar
No bicuspids/ no 3rd molars

22. Palatine Bones
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Joined at the midline and are often referred to as the median Palatine suture
Creates the wall of the dentinal tubule
When the tissue becomes inflamed

23. Nasal-Labial Groove
Supplies blood to the brain and the eyes
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
4 cusps/ bifurcated
A faint line going from the ala of the nose to the corner of the mouth

24. Anterior Tonsillar Pillar
12 years
Bony projection found on the bottom border of the temporal bone
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Mandibular central incisors

25. Incisive Arteries
Second teeth next to central incisors
Functions the same as the alveolar cfg; originate in alveolar bone
Supplies blood to the roots and periodontal ligaments of the interior teeth
Trigeminal - facial - glossopharyngeal - hypoglossal

26. Nasolacrimal groove
Arteries supplying blood to most of the head and the neck
Compact bone plate of the facial and lingual surfaces
Extends from the medial corner of the eye to the nasal cavity
Elevates the posterior portion of the tongue and narrows the fauces

27. TMJ bones are bathed In what solution?
Branches off the inferior alveolar artery before intering the mandibular canal
Synovial fluid
A line of tissue that extends from the tongue to the floor of the mouth
Compact bone plate of the facial and lingual surfaces

28. Tubercle of the Lip
A small projection in the middle of the upper lip
Occurs in unusual ways and distorted crowns may appear
The largest of the salivary glands which lie just below and in front of the ear
Extends from the mucogingival junction to the gingival groove

29. What kind of root does the maxillary first molar have?
Genioglossus - hyoglossus - styloglossus - palatoglossus
Week 12
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Triferacated

30. Mesenchyme Tissue
Retracts the tongue and raises the tip of the tongue
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Forms into dentin - cementum and pulp of the teeth
Small dark brushes

31. Imbritation Lines of Von Eboner
Stained growth rings in dentin
Portion of the lips that are red
A junction or center of veins that directly or indirectly drain a vast area
The bone that separates the root on a tooth

32. What are the 4 cranial nerves that ennervate the face and oral cavity
Respiratory system - digestive system and glandular organs
Developmental segment of a tooth
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Trigeminal - facial - glossopharyngeal - hypoglossal

33. Morpho Differentiation
Incremental lines around the layers of the enamel matrix
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Forming organ takes shape and resembles the shape of a bell
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

34. Eruption
Digstric - Mylohyoid - stylohyoid - geniohyoid
Tooth emerges from gum tissue and becomes visible
A bony projection that separates each socket
Mastication - aids in speech - influence facial structure - chewing surfaces

35. Proliferation
The inner surface of the lips
When the tissue becomes inflamed
Where the ectoderm layer matures into the enamel
10 days

36. What are the extrinsic muscles of the tongue responsible for?
Two vertical extensions of the mandible
The area on the crown of the tooth that is nearest the gingival
Assist in the movement and functioning of the tongue
Biting edge of the teeth

37. Which molar is the wisdom tooth
Radiates from the developmental groove
Maxillary third molar
Covering over the enamel that is left over from the epithelium ameloblasts
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

38. Interradicular Septum
10 days
Extreme variations from the norm
Narrow long enamel tuft
The bone that separates the root on a tooth

39. Circumvallate Papillae
A projection that extends off the back of the soft palate
Calcified masses of dentin
The space between the unattached gingiva and the tooth
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

40. Parotid glands
The largest of the salivary glands which lie just below and in front of the ear
Fleshy elevation under the tongue
Extends from the medial corner of the eye to the nasal cavity
Where the ramus meets the body of the mandible on the outside border

41. Exfoliated
Shed from the oral cavity
A dense tissue covered with mucous membrane that can withstand chewing
Composed of mucosa and surrounds the necks of the teeth
Drains the Pterygoid plexus of the veins

42. Occlusion third
Occlusal surface of the posterior tooth
2 to 3 pints
Hinge motion and gliding movement
6 months/3years

43. Dentinal Tubules
Tubules that pass through the entire surface of the dentin
Mandibular central incisors
Tooth emerges from gum tissue and becomes visible
A line that represents the alveolus bone lining the socket

44. Sharpey's Fibers
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Acts as anchors between the alveolar bone and the tooth
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

45. Cleft Palate
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Small grooves noted on some teeth
Bluish veins that run the length of the tongue

46. Lamina Propria
Molaris meaning millstone
A small projection in the middle of the upper lip
Pointed elongations of the pulp
The connective tissue of the marginal gingiva

47. Retromolar Area
Convex area on the lingual surface near gingiva
A triangular area located behind the last molar
A period of both primary teeth and permeant teeth are in the dentition
10 days

48. What are the two muscles of the soft palate?
The mandibular molars
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Used to pulverize food
Palatoglossus - palatopharyngeal

49. Palatine Rugae
Two vertical extensions of the mandible
Inside of the maxillary teeth
Platysma - trapezius - sternocleidomastoid
The ridges that run horizontally across the hard palate behind the incisive papilla

50. Apical Fiber Group
The fixed attachment of a muscle
Small dark brushes
12 years
Resists forces that try to pull the tooth outward