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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. Philtrum
Maxillary first molar
Portion of the lips that are red
Vertical groove on the midline of the upper lip
Cells develop into different tissues

2. Muscle Insertion
Excess bone in the middle of the palate
The moveable attachment of the muscle
Forms after the completion of the apical foramen
An overgrowth of the gingival tissue

3. What is the purpose of saliva?
To lubricate the oral cavity and to moisten food
Outside surface Which is towards the cheek - on posterior teeth
Resulting from an imperfect union where the lobes come together
Permeante teeth replace the primary teeth

4. Hard Palate
Forms the remaining 2/3 of the hard and soft palate uvula
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Covers muscle tissue in the posterior portion of the palate
Trigeminal nerve--because it ennervates the maxilla and the mandible

5. Inferior Nasal Conchae
Two
Developmental segment of a tooth
Scroll like bones outside the nasal cavaties
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

6. Interdental Gingiva
Conception thru the first two weeks
Mildest form of cleft palate
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
An extension of an unattached gingiva and the tooth

7. If a patient receives toxic agents - how long does it take for their sense of taste to return?
Stained growth rings in dentin
10 days
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Maxillary third molar

8. Fimbriated Folds
Folds of tissue to the the lingual veins
Incremental lines around the layers of the enamel matrix
Two weeks thru 8th week
The development of different tissues

9. What are the 4 extrinsic muscles of the tongue
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Covers muscle tissue in the posterior portion of the palate
Genioglossus - hyoglossus - styloglossus - palatoglossus
Cells that form dentin

10. Greater Palatine Nerve
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Bicuspids
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

11. Labial Mucosa
Assist in depressing the mandible and elevating the tongue
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Wearing away of the incisal or occlusal surfaces of the tooth
The inner surface of the lips

12. Lesser Palatine Foramen
Inside surface Which is towards the tongue - on anterior teeth
Supplies blood to the brain and the eyes
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Branches off the inferior alveolar artery before intering the mandibular canal

13. Palatine Raphe
A raised area of tissue laying behind the maxillary central incisors on the hard palate
20
The slightly raised line extending down the middle of the hard palate
Constricts the nasopharyngeal passage and elevates the larynx

14. How much saliva do the salivary glands produce in 24 hours?
2 to 3 pints
Looking at the border of the tongue
Chewing and swallowing food
The bone that separates the root on a tooth

15. Histology
The study of the microscopic structure and functions of tissues
Branches off the inferior alveolar artery before intering the mandibular canal
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Wings of the sphenoid bone

16. How much saliva is produced daily?
1500 millimeters
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Looking at the border of the tongue
Small linear depression

17. Agenesis
Tooth emerges from gum tissue and becomes visible
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Occurs in unusual ways and distorted crowns may appear
Found only in multi-rooted teeth and resists rotational forces

18. Sublingual Glands
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
Compact bone plate of the facial and lingual surfaces
Conception thru the first two weeks
Largest facial bone with two sections joined at the median suture

19. Naso Palatine Nerve
The area on the crown of the tooth that is nearest the gingival
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
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
2 to 3 pints

20. Fetus
9 weeks thru birth
Linear elevation of the tooth
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
What divides the tongue in half and runs from the base to the tip of the tongue

21. Which molar contains the cusp of Caribelli?
Scroll like bones outside the nasal cavaties
Maxillary first molar
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Function to resist rotational forces and tilting

22. Philtrum
A line that represents the alveolus bone lining the socket
Surface towards the midline
A junction or center of veins that directly or indirectly drain a vast area
A shallow v-shaped depression located below the bottom of the nose and above the lips

23. Buccal
Outside surface Which is towards the cheek - on posterior teeth
Corners of the mouth
Tissue covering the alveolar processes
Two cortical bone plates that come together between each tooth

24. What is another name for premolars?
Bi-cuspids
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Found near the cementoenamel junction
Palatoglossus - palatopharyngeal

25. What are the characteristics of permanent teeth?
Teeth after cuspids
Excess bone formations under the tongue on the alvellar bone
Enamel is thinner - pulp chamber is smaller -
Synovial fluid

26. Which molar is the wisdom tooth
Maxillary third molar
Incremental line indicating trauma of birth
Resulting from an imperfect union where the lobes come together
A dense tissue covered with mucous membrane that can withstand chewing

27. What are the 12 landmarks of the oral cavity?

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28. When does the maxillary second molar erupt?
12 years
Oval depression of temporal bone in condyloid process
Rounded depression on a tooth
Extends from the mucogingival junction to the gingival groove

29. Salivary Glands
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Lining covers inside of the oral cavity
Secrete saliva to assist in process of digestion

30. Odontoblast
A condition where the lower frenum attachment is very short/DDS/frenectomy
Cells that form dentin
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Acts as anchors between the alveolar bone and the tooth

31. Ectoderm
Forms into the inner lining of the oral cavitiy and enamel of the teeth
The corners of the mouth where the top and bottom lip meet
Surface towards the midline
Looking at the border of the tongue

32. Buckle groove
Largest division of the trigeminal nerve
Found near the cementoenamel junction
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

33. What is saliva made of?
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Appears to be loosely attached - covering the alveolar bone.
A shallow v-shaped depression located below the bottom of the nose and above the lips
H20 - mucin - organic salts and digestive enzymes

34. Incisal Edge
The largest of the salivary glands which lie just below and in front of the ear
Biting edge of the teeth
A line that represents the alveolus bone lining the socket
The inner surface of the lips

35. Paranasal
When the surface of the teeth becomes grooved
The area on the crown of the tooth that is nearest the gingival
Formed by the fibroblast cells and secures the tooth in the socket
Of or pertaining to area surrounding naval cavity

36. How many cusps/ roots do the 2/3rd mandibular molars have?
4 cusps/ bifurcated
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
An extension of an unattached gingiva and the tooth

37. Lines of Retzius
Chewing and swallowing food
Cheek bones--the most breakable bone in the body
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Incremental lines around the layers of the enamel matrix

38. Dentinal Fluid
Incremental lines around the layers of the enamel matrix
Forming organ takes shape and resembles the shape of a bell
Disk that acts like a cushion between the temporal bone and the condyloid process
Tissue fluid surrounding the cell membrane of the odontoblast

39. Uvula
Slight ridges on the cervical third of certain teeth that extend mesiodistally
A horseshoe shaped groove that follow the curve of the dental arch
Radiates from the developmental groove
A projection that extends off the back of the soft palate

40. Midline
Middle line of the teeth
Function to resist rotational forces and tilting
Canal or passage for fluid
Bi-cuspids

41. What is Ankyloglossia and who can treat it / What is the treatment called?
A condition where the lower frenum attachment is very short/DDS/frenectomy
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
When the dentin is exposed
Curve outward

42. Imbracation Lines
The inner surface of the cheeks
Located behind the ramus of the mandible and branches into five arteries
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Small curved lines that run parellel to the CEJ

43. Fossa
A faint line going from the ala of the nose to the corner of the mouth
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
Origin of the tooth
Rounded depression on a tooth

44. Furcation
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Separates the developing oral cavities from the nasal cavities
Dividing point of a multi-rooted tooth
Ligaments and muscles of mastication

45. Labial-Mental Groove
Portion covered with cementum
Sharp projection on the under surface of the temporal bone
The groove below the lower lips that separates the lips from the chin
Supplies blood to the face and oral cavity

46. Free Gingiva
2 small raised folds of tissue where the lingual frenum attaches
The portion of the tooth that meets the gingiva
Used to pulverize food
Tissue covering the alveolar processes

47. Rod Core
Covers muscle tissue in the posterior portion of the palate
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Scroll like bones outside the nasal cavaties
Inner portion of the enamel rod

48. Perikymata
Small head - low nasal bridge - thin upper lip - small mandible
Portion of the root seen in the oral cavity
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Small grooves noted on some teeth

49. Deep Facial Veins
Second teeth next to central incisors
Conception thru the first two weeks
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
The area on the crown of the tooth that is nearest the gingival

50. Endoderm
Respiratory system - digestive system and glandular organs
When the dentin is exposed
Drains the floor of the mouth
A small projection in the middle of the upper lip