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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.
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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. Maxillary Artery
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Second teeth next to central incisors
Largest of the branches of the external carotid artery; supplies facial structure
Surface away from the midline

2. Bud stage
Initiation of the tooth begins
Bluish veins that run the length of the tongue
The deepest point of the vestibule
Middle line of the teeth

3. What kind of root does the maxillary first molar have?
The inner surface of the cheeks
Triferacated
Found only in multi-rooted teeth and resists rotational forces
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

4. Philtrum
A small projection in the middle of the upper lip
Vertical groove on the midline of the upper lip
A shallow v-shaped depression located below the bottom of the nose and above the lips
1500 millimeters

5. Pterygoid Artery
Inside surface Which is towards the tongue - on anterior teeth
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
A horseshoe shaped groove that follow the curve of the dental arch
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

6. Histo Differentation
The development of different tissues
Calcified masses of dentin
Shed from the oral cavity
Quarters of the teeth

7. Function of Digastric
Portion of the lips where the skin meets the vermilion zone
Third tooth from the midline
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Lift the hyoid bone and assist in opening the mouth

8. Lingual Frenum
2 small raised folds of tissue where the lingual frenum attaches
Supportive fibers that anchor the tooth to the bone
A line of tissue that extends from the tongue to the floor of the mouth
4th week

9. Purpose of premolars
Largest division of the trigeminal nerve
Used to pulverize food
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
The development of different tissues

10. Oblique Ridge
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Used to pulverize food
Natural teeth in position
Growth from the oral epithelium that gives rise to the tooth buds

11. Dentoperiosteal Fiber Groups
Extends from the mucogingival junction to the gingival groove
Drains the facial structures beginning near the eye and descending toward the mandible
Supportive fibers that anchor the tooth to the bone
The line of demarcation between the attached gingiva and the marginal gingiva

12. Function of Trapezius
Moves the head backward and laterally
Primary embryonic mesoderm layer that develops during the morpho differentiation period
The space between the unattached gingiva and the tooth
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars

13. Cingulum
Surface towards the midline
Located in a depressed area between the pillars
Second teeth next to central incisors
Convex area on the lingual surface near gingiva

14. Attrition
Layers of tooth tissue become calcified
Wearing away of the incisal or occlusal surfaces of the tooth
Dividing point of a multi-rooted tooth
Short tubules that seem to crossover to the enamel

15. Maxillary Tuberosity
Pointed elongations of the pulp
A rounded area beyond the last posterior maxillary tooth
Linear elevation of the tooth
Respiratory system - digestive system and glandular organs

16. Pterygoid Process
A pocket formed by the soft tissue of cheeks and gingiva
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Buccal - lingual - and inferior alveolar
Wings of the sphenoid bone

17. Mylohyoid Artery
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Branches off the inferior alveolar artery before intering the mandibular canal
Palatoglossus - palatopharyngeal
Initiation of the tooth begins

18. Alveolus
Bone that surrounds the root of the tooth
Retracts or depresses the tongue
The connective tissue of the marginal gingiva
Portion of the lips where the skin meets the vermilion zone

19. Internal Jugular Vein
When the surface of the teeth becomes grooved
The largest of the salivary glands which lie just below and in front of the ear
Assist in the movement and functioning of the tongue
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

20. Alveolar Mucosa
Molars
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Formed by the fibroblast cells and secures the tooth in the socket
Mucosa that covers the alveolar bone

21. Ligament
Covering over the enamel that is left over from the epithelium ameloblasts
The ridges that run horizontally across the hard palate behind the incisive papilla
Band of fibrous tissue which attaches bone to bone
Inside surface Which is towards the tongue - on anterior teeth

22. Mandibular Foramen
Located on the inside of the body of the ramus
Compact bone plate of the facial and lingual surfaces
No bicuspids/ no 3rd molars
When the dentin is exposed

23. What is the longest tooth in the mandibular arch?
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Lift the hyoid bone and assist in opening the mouth
The mandibular first premolar
Small linear depression

24. When does the maxillary first molar erupt?
Small grooves noted on some teeth
6 years old
Permeante teeth replace the primary teeth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

25. Nasmyths Membrane
Divides the crown and the root
Covering over the enamel that is left over from the epithelium ameloblasts
Bi-cuspids
Calcified masses of dentin

26. Nasal-Labial Groove
A faint line going from the ala of the nose to the corner of the mouth
The development of different tissues
Largest facial bone with two sections joined at the median suture
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

27. Circumpulpal Dentin
Digstric - Mylohyoid - stylohyoid - geniohyoid
Elevated are of enamel that forms the Mesial and distal borders
The layer of dentin that surrounds the pulp
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

28. Posterior Tonsillar Pillar
An extension of an unattached gingiva and the tooth
Indented
Place where the groove comes together or fissures cross
Set of arches found farther in the back of the throat

29. Saliva
A rounded area beyond the last posterior maxillary tooth
Chewing and swallowing food
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Tooth emerges from gum tissue and becomes visible

30. Lines of Retzius
The first predentin that is formed and matures within the tube
Incremental lines around the layers of the enamel matrix
Extreme variations from the norm
Band of fibrous tissue which attaches muscle to bone

31. Incisal Edge
Biting edge of the teeth
Forms the bulk of the tooth
Respiratory system - digestive system and glandular organs
Opening for the ear

32. Inferior Nasal Conchae
Joined at the midline and are often referred to as the median Palatine suture
Resulting from an imperfect union where the lobes come together
Primitive mouth
Scroll like bones outside the nasal cavaties

33. Marginal GIngiva
Outside surface Which is towards the lips
(free gingiva) surrounds the teeth
Responsible for laying down the enamel matrix into place
Cheek bones--the most breakable bone in the body

34. How can you tell if someone has cancer by looking at the tongue?
Found only in multi-rooted teeth and resists rotational forces
The largest of three openings located in the posterior region of the hard palate
H20 - mucin - organic salts and digestive enzymes
Looking at the border of the tongue

35. Imbracation Lines
Permeante teeth replace the primary teeth
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
Small curved lines that run parellel to the CEJ
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

36. Median Sulcus
Drains the facial structures beginning near the eye and descending toward the mandible
What divides the tongue in half and runs from the base to the tip of the tongue
Arteries supplying blood to most of the head and the neck
Branches off the inferior alveolar artery before intering the mandibular canal

37. Sharpey's Fibers
Acts as anchors between the alveolar bone and the tooth
The inner surface of the cheeks
Layers of tooth tissue become calcified
Mucosa that covers the alveolar bone

38. Which molar is the wisdom tooth
Separates the developing oral cavities from the nasal cavities
Located on the inside of the body of the ramus
Maxillary third molar
Calcified masses of dentin

39. Morphology
Study of the structure and form of the teeth
Extreme variations from the norm
Respiratory system - digestive system and glandular organs
Slight ridges on the cervical third of certain teeth that extend mesiodistally

40. Palantine Tonsils
Found near the cementoenamel junction
The inner surface of the cheeks
Located in a depressed area between the pillars
Mastication - aids in speech - influence facial structure - chewing surfaces

41. Palatine Rugae
Maxillary first molar
Opening for the ear
The ridges that run horizontally across the hard palate behind the incisive papilla
The line of demarcation between the attached gingiva and the marginal gingiva

42. Lingual Nerve Branch
Small curved lines that run parellel to the CEJ
Pointed elongations of the pulp
Synovial fluid
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

43. What are the extrinsic muscles of the tongue responsible for?
1500 millimeters
Assist in the movement and functioning of the tongue
Triferacated
Papillae that give the tongue the strawberry effect

44. Lamina Propria
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Trigeminal - facial - glossopharyngeal - hypoglossal
The connective tissue of the marginal gingiva
Clear fluid secreted by the salivary and mucous glands throughout the mouth

45. Fibroblasts
Teeth after cuspids
Primary and permanent
Triangular space in the gingival direction when two adjacent teeth are in contact
Cells From which connective tissue evolve

46. Clinical root
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Linear elevation of the tooth
Portion of the root seen in the oral cavity
Set of arches found farther in the back of the throat

47. Filiform Papillae
Causes a thickening of the cementum around the apex
Three bulges on the incisal edge
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Raised vertical folds of tissue on the lateral border of the tongue

48. Deep Facial Veins
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Primitive mouth
Linear elevation of the tooth
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

49. What are the characteristics of permanent teeth?
Enamel is thinner - pulp chamber is smaller -
9 weeks thru birth
Divides the crown and the root
Wearing away of the incisal or occlusal surfaces of the tooth

50. Attached Gingiva
Hinge motion and gliding movement
Extends from the mucogingival junction to the gingival groove
Disk that acts like a cushion between the temporal bone and the condyloid process
Clear fluid secreted by the salivary and mucous glands throughout the mouth