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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. Facial Artery
Peg shaped crown with a smooth surface
Palatoglossus - palatopharyngeal
Mildest form of cleft 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

2. Fibroblasts
Cells From which connective tissue evolve
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Supportive fibers that anchor the tooth to the bone
A raised area of tissue laying behind the maxillary central incisors on the hard palate

3. Xygomatic bones
The moveable attachment of the muscle
Cheek bones--the most breakable bone in the body
Scroll like bones outside the nasal cavaties
Mildest form of cleft palate

4. Hyoid Bone
Molars
Occlusal surface of the posterior tooth
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
Calcified masses of dentin

5. Interradical Fiber Group
Study of the structure and form of the teeth
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Found only in multi-rooted teeth and resists rotational forces
The tip of the chin

6. Mastoid process
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Inside surface Which is towards the tongue - on anterior teeth
Bony projection found on the bottom border of the temporal bone
Retracts the tongue and raises the tip of the tongue

7. What are the intrinsical muscles of the tongue responsible for?
Mildest form of cleft palate
Shaping the tongue during speech - mastication and swallowing
Calcified masses of dentin
2 small raised folds of tissue where the lingual frenum attaches

8. Imbritation Lines of Von Eboner
Stained growth rings in dentin
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Surface away from the midline

9. lst and second premolars
Teeth after cuspids
Convex area on the lingual surface near gingiva
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Scroll like bones outside the nasal cavaties

10. Embrasure
Mildest form of cleft palate
Triangular space in the gingival direction when two adjacent teeth are in contact
Portion of the lips where the skin meets the vermilion zone
A bat shaped bone which forms the anterior portion of the skull

11. Mylohyoid Artery
Separation of the upper lip ( 1 of 1000 live births)
10 days
Branches off the inferior alveolar artery before intering the mandibular canal
A bony plate covered with keratinized tissue located in the anterior portion of the palate

12. Common Carotid
Arteries supplying blood to most of the head and the neck
When the tissue becomes inflamed
Function to resist rotational forces and tilting
Largest of the branches of the external carotid artery; supplies facial structure

13. Angle of the Mandible
Band of fibrous tissue which attaches bone to bone
Origin - fixed point - insertion - movable point
Where the ectoderm layer matures into the enamel
Where the ramus meets the body of the mandible on the outside border

14. Palantine Tonsils
Retracts or depresses the tongue
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
Located in a depressed area between the pillars
The internal surface at the center of the mandible

15. Evanesce
Cells From which connective tissue evolve
To dissolve
The fixed attachment of a muscle
Respiratory system - digestive system and glandular organs

16. When does the maxillary first molar erupt?
Demonstrates a disturbance in the body metabolism
6 years old
Elevated are of enamel that forms the Mesial and distal borders
Papillae that give the tongue the strawberry effect

17. Gestational period
Drains the facial structures beginning near the eye and descending toward the mandible
Scroll like bones outside the nasal cavaties
Drains the superficial veins of the face and neck into the subclavian vein
9 months (5 months ultrasound to tell sex)

18. Horizontal Fiber Group
Hinge motion and gliding movement
The portion of the tooth that meets the gingiva
Substances between cells
Functions the same as the alveolar cfg; originate in alveolar bone

19. Dental Sac
An enclosed area that matures into dentin - cementum and pulp
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Genioglossus - hyoglossus - styloglossus - palatoglossus
Drains the floor of the mouth

20. Cortical Bone
Compact bone plate of the facial and lingual surfaces
Lower arch of the teeth
Inside of the maxillary teeth
Occurs in unusual ways and distorted crowns may appear

21. Vermilion Zone
An extension of an unattached gingiva and the tooth
Cheek bones--the most breakable bone in the body
Developmental segment of a tooth
Portion of the lips that are red

22. Maxillary Nerve Branch
Moves the head backward and laterally
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Forms the bulk of the tooth
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

23. Posterior Superior Alveolar Nerve
Largest division of the trigeminal nerve
The inner surface of the lips
Papillae that give the tongue the strawberry effect
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar

24. Ameloblast
Enamel forming cells
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Largest of the branches of the external carotid artery; supplies facial structure
Inside surface Which is towards the tongue - on anterior teeth

25. Histo Differentation
The development of different tissues
Mucosa that covers the alveolar bone
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Radiates from the developmental groove

26. Duct
Canal or passage for fluid
The outer edge of the nostril
Duct located on the parotid papilla
Aid in attaching the gingiva to the alveolar bone

27. Fordyce's Spots
An enclosed area that matures into dentin - cementum and pulp
Small yellowish glands on the labial mucosa
A horseshoe shaped groove that follow the curve of the dental arch
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

28. Fissure
Demonstrates a disturbance in the body metabolism
Resulting from an imperfect union where the lobes come together
A triangular area located behind the last molar
Initiation of the tooth begins

29. Buccal Mucosa
The inner surface of the cheeks
Forming organ takes shape and resembles the shape of a bell
A bat shaped bone which forms the anterior portion of the skull
Incremental line indicating trauma of birth

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

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31. Lingual Nerve Branch
Separates the developing oral cavities from the nasal cavities
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
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
Short tubules that seem to crossover to the enamel

32. Primary palate
Separates the developing oral cavities from the nasal cavities
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
A horseshoe shaped groove that follow the curve of the dental arch
Looking at the border of the tongue

33. Lines of Retzius
The development of different tissues
Incremental lines around the layers of the enamel matrix
A line of demarcation between the attached gingiva and alveolar mucosa
Healthy gingival tissue with an orange texture

34. Maxillary Tuberosity
Found near the cementoenamel junction
9 months (5 months ultrasound to tell sex)
A rounded area beyond the last posterior maxillary tooth
Pulls the hyoid bone and the tongue anteriorly

35. Rami
Two vertical extensions of the mandible
A condition where the lower frenum attachment is very short/DDS/frenectomy
Draws down the mandible and corners of the mouth
Place where the groove comes together or fissures cross

36. How many cusps/ roots do the 2/3rd maxillary molars have?
Three cusps/ trifurcated
The mandibular molars
1500 millimeters
Interdental ligament

37. Foliate Papillae
Assists in elevating the chin
Curve outward
Largest facial bone with two sections joined at the median suture
Raised vertical folds of tissue on the lateral border of the tongue

38. Osteoclasts
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Shed from the oral cavity
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

39. Morpho differentiation
The development of different forms
Outside surface Which is towards the cheek - on posterior teeth
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Portion of the root seen in the oral cavity

40. How many cusps/ roots do the 2/3rd mandibular molars have?
Extends from the mucogingival junction to the gingival groove
Fleshy elevation under the tongue
4 cusps/ bifurcated
A raised area of tissue laying behind the maxillary central incisors on the hard palate

41. When do oral and nasal cavity separate and palate develop?
Bicuspids
Week 12
Forms into dentin - cementum and pulp of the teeth
Initiation of the tooth begins

42. Where is the palate located?
Outside surface Which is towards the cheek - on posterior teeth
Inside of the maxillary teeth
The mandibular molars
Molars

43. What is saliva made of?
H20 - mucin - organic salts and digestive enzymes
Forms a large cavity above the roots of the maxillary molars
Bi-cuspids
The crown of the tooth that is nearest the incisal edge near the anterior tooth

44. Lesser Palatine Foramen
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Two vertical extensions of the mandible
Outside surface Which is towards the lips

45. Parotid Papilla
Appears to be loosely attached - covering the alveolar bone.
Creates the wall of the dentinal tubule
A flap of tissue on the on the buccal mucosa
Excess bone formations under the tongue on the alvellar bone

46. Mastication
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Functions the same as the alveolar cfg; originate in alveolar bone
The first predentin that is formed and matures within the tube
Chewing and swallowing food

47. Mandibular Foramen
Located on the inside of the body of the ramus
Stained growth rings in dentin
Extreme variations from the norm
Folds of tissue to the the lingual veins

48. What is the longest tooth in the mandibular arch?
The mandibular first premolar
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Molaris meaning millstone
A faint line going from the ala of the nose to the corner of the mouth

49. Central Incisor
Bone that surrounds the root of the tooth
9 weeks thru birth
Middle two teeth in the mouth
Bluish veins that run the length of the tongue

50. Mucogingival Junction
A line of demarcation between the attached gingiva and alveolar mucosa
20
Bifurcated/ 5 cusps
Raised vertical folds of tissue on the lateral border of the tongue