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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. Fibroblasts
Digstric - Mylohyoid - stylohyoid - geniohyoid
The disc becomes displaced
Cells From which connective tissue evolve
Incremental lines around the layers of the enamel matrix

2. Rami
The inner surface of the lips
Two vertical extensions of the mandible
Set of arches found farther in the back of the throat
Band of fibrous tissue which attaches bone to bone

3. If a patient receives toxic agents - how long does it take for their sense of taste to return?
Largest of the branches of the external carotid artery; supplies facial structure
H20 - mucin - organic salts and digestive enzymes
Synovial fluid
10 days

4. Common Carotid
Cheek bones--the most breakable bone in the body
Divides the crown and the root
Contains six branches that supply blood to the pharynx muscles - soft palate tonsils - the posterior of the tongue - sub mandibular gland - muscles of the face - nasal septom - nose and the eyelids
Arteries supplying blood to most of the head and the neck

5. Sublingual Sulcus
Calcified masses of dentin
A horseshoe shaped groove that follow the curve of the dental arch
Dentin found between the tubules
Mucosa that covers the alveolar bone

6. Sublingual Glands
Occurs in unusual ways and distorted crowns may appear
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
Bony projection found on the bottom border of the temporal bone
Follows the inside of the ramus and the body of the mandible

7. What are the 3 branches of the pterygopalatine nerve branch?
Greater - lesser - naso palatine nerves
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

8. Dentogingival Fiber Groups
Small linear depression
Primitive mouth
Covers muscle tissue in the posterior portion of the palate
Act to maintain the gingival integrity of the marginal gingiva

9. When do the tooth buds appear?
Largest of the branches of the external carotid artery; supplies facial structure
Small dark brushes
Study of the structure and form of the teeth
Week 11

10. Lingual Frenum
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
A line of tissue that extends from the tongue to the floor of the mouth
Assist in depressing the mandible and elevating the tongue
Of or pertaining to area surrounding naval cavity

11. Vermilion Border
The internal surface at the center of the mandible
Shaping the tongue during speech - mastication and swallowing
Resulting from an imperfect union where the lobes come together
Portion of the lips where the skin meets the vermilion zone

12. What are the 4 cranial nerves that ennervate the face and oral cavity
Small grooves noted on some teeth
When the tissue becomes inflamed
Interdental ligament
Trigeminal - facial - glossopharyngeal - hypoglossal

13. Function of Styloglossus
The inner surface of the cheeks
Retracts the tongue and raises the tip of the tongue
Bluish veins that run the length of the tongue
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

14. Retro Mandibular Vein
Genioglossus - hyoglossus - styloglossus - palatoglossus
Triangular space in the gingival direction when two adjacent teeth are in contact
Drains the maxiallary artery and superficial temporal arteries
4 cusps/ bifurcated

15. Tome's process
Covers muscle tissue in the posterior portion of the palate
Responsible for laying down the enamel matrix into place
Forms the bulk of the tooth
Lower arch of the teeth

16. Occlusion third
Three bulges on the incisal edge
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Occlusal surface of the posterior tooth
Maxillary first molar

17. Peritubular Dentin
Synovial fluid
Raised vertical folds of tissue on the lateral border of the tongue
To lubricate the oral cavity and to moisten food
Creates the wall of the dentinal tubule

18. Gingival Groove
Circle and tighten the gingival margin around the neck of the tooth
The line of demarcation between the attached gingiva and the marginal gingiva
Resulting from an imperfect union where the lobes come together
Fifth cusp located on the mesial surface lingual surface of maxillary first molars

19. Pulp horns
Acts as anchors between the alveolar bone and the tooth
Pointed elongations of the pulp
Elevates the posterior portion of the tongue and narrows the fauces
What divides the tongue in half and runs from the base to the tip of the tongue

20. Horizontal Fiber Group
Two cortical bone plates that come together between each tooth
Wings of the sphenoid bone
The space between the unattached gingiva and the tooth
Functions the same as the alveolar cfg; originate in alveolar bone

21. Styloid Process
Sharp projection on the under surface of the temporal bone
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
The groove below the lower lips that separates the lips from the chin
Cut - tear - and grind food

22. Alveolus
Bone that surrounds the root of the tooth
Healthy gingival tissue with an orange texture
Two cortical bone plates that come together between each tooth
A raised area of tissue laying behind the maxillary central incisors on the hard palate

23. Alveolar Crest
Two cortical bone plates that come together between each tooth
Orbicularis oris - buccinator - mentalis - zygomatic major
The mandibular molars
Maxillary third molar

24. Secondary palate
Forms the remaining 2/3 of the hard and soft palate uvula
Peg shaped crown with a smooth surface
The development of different cells
The portion of the tooth that meets the gingiva

25. Imbritation Lines of Von Eboner
Stained growth rings in dentin
9 weeks thru birth
Portion of the lips that are red
Located behind the ramus of the mandible and branches into five arteries

26. Resonance
Full deep rich sound in nasal cavity
Narrow long enamel tuft
A projection that extends off the back of the soft palate
Lining covers inside of the oral cavity

27. Incisal third
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Draws the hyoid bone superiorly and posteriorly and stabilizes it
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Resist rotational forces and hold teeth in inter-proximal contact

28. Quadrants
Enamel is thinner - pulp chamber is smaller -
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Quarters of the teeth

29. What are the extrinsic muscles of the tongue responsible for?
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Assist in the movement and functioning of the tongue
Calcium salts are deposited into formed tooth
Quarters of the teeth

30. Enamel Tufts
Lining covers inside of the oral cavity
Follows the inside of the ramus and the body of the mandible
Compact bone plate of the facial and lingual surfaces
Small dark brushes

31. When does the maxillary second molar erupt?
Portion covered with cementum
Drains the facial structures beginning near the eye and descending toward the mandible
12 years
Peg shaped crown with a smooth surface

32. What teeth do the deciduous (baby) tooth not include?
Cells From which connective tissue evolve
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Oval structures that are located on the dorsal surface of the tongue
No bicuspids/ no 3rd molars

33. Lingual Veins
Pointed elongations of the pulp
Bluish veins that run the length of the tongue
Assist in the movement and functioning of the tongue
Triferacated

34. Sphenoid
Portion of the root seen in the oral cavity
A bat shaped bone which forms the anterior portion of the skull
Papillae that give the tongue the strawberry effect
Compact bone plate of the facial and lingual surfaces

35. Ridge
The inner surface of the cheeks
Linear elevation of the tooth
Natural teeth in position
Forming organ takes shape and resembles the shape of a bell

36. Xygomatic bones
A shallow v-shaped depression located below the bottom of the nose and above the lips
The inner surface of the cheeks
9 months (5 months ultrasound to tell sex)
Cheek bones--the most breakable bone in the body

37. Cervical line
Incremental line indicating trauma of birth
A projection that extends off the back of the soft palate
Shaping the tongue during speech - mastication and swallowing
Divides the crown and the root

38. Anterior Alveolar Nerve
Papillae that give the tongue the strawberry effect
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Responsible for laying down the enamel matrix into place
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

39. Linea Alba
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Circle and tighten the gingival margin around the neck of the tooth
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Set of arches found farther in the back of the throat

40. Facial Artery
Enamel is thinner - pulp chamber is smaller -
Located on the inside of the body of the ramus
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Contains six branches that supply blood to the pharynx muscles - soft palate tonsils - the posterior of the tongue - sub mandibular gland - muscles of the face - nasal septom - nose and the eyelids

41. Pulp Stones
Cheek bones--the most breakable bone in the body
Calcified masses of dentin
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 dense tissue covered with mucous membrane that can withstand chewing

42. Alveolar Crest Fiber Group
Forming organ takes shape and resembles the shape of a bell
A shallow v-shaped depression located below the bottom of the nose and above the lips
Small dark brushes
Function to resist rotational forces and tilting

43. What are the 2 sets of teeth?
Primary and permanent
Chewing and swallowing food
The disc becomes displaced
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

44. What are the characteristics of deciduous teeth?
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Raised vertical folds of tissue on the lateral border of the tongue
10 days
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

45. Vestibule
The slightly raised line extending down the middle of the hard palate
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Separation of the upper lip ( 1 of 1000 live births)
A pocket formed by the soft tissue of cheeks and gingiva

46. Mylohyoid Artery
Middle two teeth in the mouth
Branches off the inferior alveolar artery before intering the mandibular canal
The groove below the lower lips that separates the lips from the chin
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

47. Interdental Ligament Group
Follows the length of the body of the mandible past the last tooth and up to the ramus
Papillae that give the tongue the strawberry effect
Resist rotational forces and hold teeth in inter-proximal contact
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

48. Function of Geniohyoid
H20 - mucin - organic salts and digestive enzymes
Aid in attaching the gingiva to the alveolar bone
Pulls the hyoid bone and the tongue anteriorly
Opening in the mouth below the orbit on the maxillary bone

49. Duct
The study of the microscopic structure and functions of tissues
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Canal or passage for fluid
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

50. Cemental Spurs
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Set of arches found farther in the back of the throat
Cheek bones--the most breakable bone in the body
Found near the cementoenamel junction