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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. Mental Nerve Branch
Largest division of the trigeminal nerve
Short tubules that seem to crossover to the enamel
Mastication - aids in speech - influence facial structure - chewing surfaces
A line that represents the alveolus bone lining the socket

2. How many cusps/ roots do the 2/3rd mandibular molars have?
The inner surface of the lips
Inner portion of the enamel rod
4 cusps/ bifurcated
The mandibular molars

3. Internal Carotid Artery
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
6 months/3years
Supplies blood to the brain and the eyes
Radiates from the developmental groove

4. What are the two muscles of the soft palate?
Small bony projections surrounding the lingual foramen
Pulverizing or chewing surface
Palatoglossus - palatopharyngeal
The internal surface at the center of the mandible

5. External Jugular Vein
When cells rapidly increase in number
Formed by the uniting of lobes during development of crown
Drains the superficial veins of the face and neck into the subclavian vein
The groove below the lower lips that separates the lips from the chin

6. Bud stage
Initiation of the tooth begins
Small dark brushes
Calcified masses of dentin
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

7. Tome's process
Supplies blood to the brain and the eyes
Responsible for laying down the enamel matrix into place
A pocket formed by the soft tissue of cheeks and gingiva
20

8. Mastoid process
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Bony projection found on the bottom border of the temporal bone
Demonstrates a disturbance in the body metabolism
Aid in attaching the gingiva to the alveolar bone

9. Salivary Glands
Narrow long enamel tuft
Week 11
Secrete saliva to assist in process of digestion
Drains the facial structures beginning near the eye and descending toward the mandible

10. What are the 4 maxillary nerve branches?
Looking at the border of the tongue
Genioglossus - hyoglossus - styloglossus - palatoglossus
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Disk that acts like a cushion between the temporal bone and the condyloid process

11. Paranasal
Of or pertaining to area surrounding naval cavity
A rounded area beyond the last posterior maxillary tooth
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Functions the same as the alveolar cfg; originate in alveolar bone

12. Function of mylohyoid
Assist in depressing the mandible and elevating the tongue
Incremental line indicating trauma of birth
6 years old
A bony plate covered with keratinized tissue located in the anterior portion of the palate

13. Mamelons
Occlusal surface of the posterior tooth
Found near the cementoenamel junction
Three bulges on the incisal edge
Elevates the posterior portion of the tongue and narrows the fauces

14. Dentogingival Fiber Groups
Smaller branch that ennervates the soft palate uvula and tonsils
Act to maintain the gingival integrity of the marginal gingiva
Located behind the ramus of the mandible and branches into five arteries
Pointed elongations of the pulp

15. What teeth are removed if overcrowding occurs?
A line of tissue that extends from the tongue to the floor of the mouth
Bicuspids
6 months/3years
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

16. Free Gingiva
Maxillary first molar
Supplies blood to the roots and periodontal ligaments of the molars and premolars
The portion of the tooth that meets the gingiva
The mandibular first premolar

17. Ridge
No bicuspids/ no 3rd molars
Formed by the uniting of lobes during development of crown
Linear elevation of the tooth
Supplies blood to the face and oral cavity

18. External Auditory Meatus
A bat shaped bone which forms the anterior portion of the skull
Extreme variations from the norm
Assists in elevating the chin
Opening for the ear

19. Periodontal Ligaments
Secrete saliva to assist in process of digestion
Drains the floor of the mouth
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Formed by the fibroblast cells and secures the tooth in the socket

20. Lesser Palatine Foramen
Located behind the ramus of the mandible and branches into five arteries
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Primary and permanent

21. Buccal Mucosa
Tubules that pass through the entire surface of the dentin
Supplies blood to the face and oral cavity
The inner surface of the cheeks
Elevated are of enamel that forms the Mesial and distal borders

22. Convex
To bulge of curve outward
Surface towards the midline
Function to resist rotational forces and tilting
Indented

23. Sublingual Glands
2 small raised folds of tissue where the lingual frenum attaches
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
The mandibular molars
Trigeminal - facial - glossopharyngeal - hypoglossal

24. What is the most common problem with TMJ
The disc becomes displaced
Where the ectoderm layer matures into the enamel
Covers muscle tissue in the posterior portion of the palate
A shallow v-shaped depression located below the bottom of the nose and above the lips

25. How much saliva is produced daily?
Bi-cuspids
Where the ramus meets the body of the mandible on the outside border
The crown of the tooth that is nearest the incisal edge near the anterior tooth
1500 millimeters

26. Intertubular Dentin
Dentin found between the tubules
Looking at the border of the tongue
Buccal - lingual - and inferior alveolar
Function to resist rotational forces and tilting

27. Fimbriated Folds
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Folds of tissue to the the lingual veins
Papillae that give the tongue the strawberry effect

28. What is the smallest tooth in dentition?
Located in a depressed area between the pillars
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Mandibular central incisors
Forms a large cavity above the roots of the maxillary molars

29. Cortical Bone
Wings of the sphenoid bone
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Compact bone plate of the facial and lingual surfaces
A line of demarcation between the attached gingiva and alveolar mucosa

30. What is saliva made of?
Vertical groove on the midline of the upper lip
Composed of mucosa and surrounds the necks of the teeth
H20 - mucin - organic salts and digestive enzymes
A line of demarcation between the attached gingiva and alveolar mucosa

31. What are the four major muscles of facial expression
Surface towards the midline
Orbicularis oris - buccinator - mentalis - zygomatic major
Study of prenatal growth and the developing process of an individual
Oval depression of temporal bone in condyloid process

32. Lines of Retzius
2 small raised folds of tissue where the lingual frenum attaches
Pulverizing or chewing surface
Trigeminal nerve--because it ennervates the maxilla and the mandible
Incremental lines around the layers of the enamel matrix

33. Incisive Papilla
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Curve outward
Appears to be loosely attached - covering the alveolar bone.
Aid in attaching the gingiva to the alveolar bone

34. Stenson's Duct
Duct located on the parotid papilla
The cornerstone of the mouth
The layer of dentin that surrounds the pulp
When cells rapidly increase in number

35. Cleft Lip
Extends from the medial corner of the eye to the nasal cavity
Vertical groove on the midline of the upper lip
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Separation of the upper lip ( 1 of 1000 live births)

36. What are the 4 cranial nerves that ennervate the face and oral cavity
A small projection in the middle of the upper lip
Upper arch of the teeth
Raised vertical folds of tissue on the lateral border of the tongue
Trigeminal - facial - glossopharyngeal - hypoglossal

37. Perikymata
6 years old
Small grooves noted on some teeth
Resulting from an imperfect union where the lobes come together
Joined at the midline and are often referred to as the median Palatine suture

38. Soft Palate
The area on the crown of the tooth that is nearest the gingival
Covers muscle tissue in the posterior portion of the palate
Where the ectoderm layer matures into the enamel
2 to 3 pints

39. Pterygoid plexus of the veins
Radiates from the developmental groove
Arteries supplying blood to most of the head and the neck
The moveable attachment of the muscle
A junction or center of veins that directly or indirectly drain a vast area

40. Midline
Middle line of the teeth
Drains the maxiallary artery and superficial temporal arteries
Genioglossus - hyoglossus - styloglossus - palatoglossus
Third tooth from the midline

41. Dental Lamina
Depresses the tongue
Excess bone in the middle of the palate
Orbicularis oris - buccinator - mentalis - zygomatic major
Growth from the oral epithelium that gives rise to the tooth buds

42. What is the purpose of saliva?
Biting edge of the teeth
Clear fluid secreted by the salivary and mucous glands throughout the mouth
To lubricate the oral cavity and to moisten food
Study of prenatal growth and the developing process of an individual

43. Function of Stylohyoid
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Bluish veins that run the length of the tongue
Composed of mucosa and surrounds the necks of the teeth
The layer of dentin that surrounds the pulp

44. Stippled
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Healthy gingival tissue with an orange texture
Portion of the lips that are red
Natural teeth in position

45. How can you tell if someone has cancer by looking at the tongue?
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Teeth will not erupt in proper position
Looking at the border of the tongue
Forming organ takes shape and resembles the shape of a bell

46. Enamel Lamellae
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
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
Narrow long enamel tuft
The area on the crown of the tooth that is nearest the gingival

47. Cemental Spurs
Palatoglossus - palatopharyngeal
Pulverizing or chewing surface
Supplies blood to the roots and periodontal ligaments of the interior teeth
Found near the cementoenamel junction

48. What are the 2 sets of teeth?
Shed from the oral cavity
Primary and permanent
Set of arches found farther in the back of the throat
The disc becomes displaced

49. Exfoliated
A horseshoe shaped groove that follow the curve of the dental arch
Shed from the oral cavity
Molars
Study of the structure and form of the teeth

50. Convects
Calcium salts are deposited into formed tooth
Curve outward
Small dark brushes
Corners of the mouth