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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. Gestational period
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Triferacated
9 months (5 months ultrasound to tell sex)
10 days

2. Mastoid process
Bony projection found on the bottom border of the temporal bone
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
(free gingiva) surrounds the teeth
Found only in multi-rooted teeth and resists rotational forces

3. How many cusps/ roots do the 2/3rd maxillary molars have?
Three cusps/ trifurcated
Molaris meaning millstone
Incremental lines around the layers of the enamel matrix
Small grooves noted on some teeth

4. Inferior Alveolar Artery
Synovial fluid
Respiratory system - digestive system and glandular organs
Set of arches found farther in the back of the throat
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

5. Mental Protuberance
The tip of the chin
Respiratory system - digestive system and glandular organs
Elevates the posterior portion of the tongue and narrows the fauces
Three bulges on the incisal edge

6. Sublingual Glands
A triangular area located behind the last molar
A condition where the lower frenum attachment is very short/DDS/frenectomy
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
6 months/3years

7. Function of Digastric
The groove below the lower lips that separates the lips from the chin
Resulting from an imperfect union where the lobes come together
The tip of the chin
Lift the hyoid bone and assist in opening the mouth

8. Vestibule
Triferacated
A pocket formed by the soft tissue of cheeks and gingiva
Vertical groove on the midline of the upper lip
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

9. Cervical Third
The area on the crown of the tooth that is nearest the gingival
Pointed elongations of the pulp
Incremental lines around the layers of the enamel matrix
6 months/3years

10. What is saliva made of?
Forms the remaining 2/3 of the hard and soft palate uvula
Separation of the upper lip ( 1 of 1000 live births)
Cut - tear - and grind food
H20 - mucin - organic salts and digestive enzymes

11. Stensens' Duct (aka Parotid)

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12. What are the two ways the TMJs move?
Occurs in unusual ways and distorted crowns may appear
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Hinge motion and gliding movement
Cells that form cementum

13. Histo Differentation
The space between the unattached gingiva and the tooth
Extreme variations from the norm
Portion covered with cementum
The development of different tissues

14. Marginal GIngiva
Mildest form of cleft palate
Separates the developing oral cavities from the nasal cavities
(free gingiva) surrounds the teeth
Indented

15. Purpose of premolars
Surface towards the midline
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Used to pulverize food
Drains the maxiallary artery and superficial temporal arteries

16. Lacrimal Bones
Forms the remaining 2/3 of the hard and soft palate uvula
Raised vertical folds of tissue on the lateral border of the tongue
Tissue covering the alveolar processes
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

17. Imbritation Lines of Von Eboner
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
The moveable attachment of the muscle
Stained growth rings in dentin
Formed by the fibroblast cells and secures the tooth in the socket

18. Mental Nerve Branch
Largest division of the trigeminal nerve
Excess bone formations under the tongue on the alvellar bone
When the tissue becomes inflamed
Responsible for laying down the enamel matrix into place

19. When does the maxillary first molar erupt?
6 years old
Small raised projections where taste buds are located
Calcified masses of dentin
The fixed attachment of a muscle

20. Convects
The mandibular molars
Curve outward
Quarters of the teeth
Trigeminal - facial - glossopharyngeal - hypoglossal

21. Convex
Responsible for laying down the enamel matrix into place
Biting edge of the teeth
Chewing and swallowing food
To bulge of curve outward

22. Dental Sac
A flap of tissue on the on the buccal mucosa
The corners of the mouth where the top and bottom lip meet
A faint line going from the ala of the nose to the corner of the mouth
An enclosed area that matures into dentin - cementum and pulp

23. Odontogenesis
Cells that form cementum
2 to 3 pints
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Origin of the tooth

24. Perikymata
The deepest point of the vestibule
Excess bone formations under the tongue on the alvellar bone
Small grooves noted on some teeth
Portion covered with cementum

25. Pterygoid Process
Tubules that pass through the entire surface of the dentin
Dentin found between the tubules
Maxillary first molar
Wings of the sphenoid bone

26. Mamelons
Three bulges on the incisal edge
Extreme variations from the norm
Formed by the uniting of lobes during development of crown
Excess dryness of the mouth

27. Labial Commissures
Corners of the mouth
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
6 months/3years
Small grooves noted on some teeth

28. Attrition
An extension of an unattached gingiva and the tooth
Wearing away of the incisal or occlusal surfaces of the tooth
The gingiva in the floor of the gingival sulcus that attaches to the enamel
A line of demarcation between the attached gingiva and alveolar mucosa

29. Dentogingival Fiber Groups
Inner portion of the enamel rod
Drains the floor of the mouth
Act to maintain the gingival integrity of the marginal gingiva
A bony projection that separates each socket

30. What are the 3 branches of the mandibular nerve branch?
Buccal - lingual - and inferior alveolar
Mildest form of cleft palate
Small raised projections where taste buds are located
Forms the remaining 2/3 of the hard and soft palate uvula

31. Xygote
Conception thru the first two weeks
Surface away from the midline
The slightly raised line extending down the middle of the hard palate
Disk that acts like a cushion between the temporal bone and the condyloid process

32. Secondary Dentin
Pulverizing or chewing surface
Forms after the completion of the apical foramen
Elevates the posterior portion of the tongue and narrows the fauces
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

33. Cemental Spurs
Supportive fibers that anchor the tooth to the bone
Origin - fixed point - insertion - movable point
Outside surface Which is towards the lips
Found near the cementoenamel junction

34. Lingual Veins
Bluish veins that run the length of the tongue
Opening for the ear
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Biting edge of the teeth

35. Philtrum
Substances between cells
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Vertical groove on the midline of the upper lip
An overgrowth of the gingival tissue

36. Periodontal Ligaments
Formed by the fibroblast cells and secures the tooth in the socket
Function to resist rotational forces and tilting
Folds of tissue that extend horizontally from the uvula to the base of the tongue
The outer edge of the nostril

37. What teeth are removed if overcrowding occurs?
Bicuspids
32
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
Wearing away of the incisal or occlusal surfaces of the tooth

38. Exfoliated
Shed from the oral cavity
The corners of the mouth where the top and bottom lip meet
Two cortical bone plates that come together between each tooth
A bat shaped bone which forms the anterior portion of the skull

39. Enamel Spindle
Outside surface Which is towards the cheek - on posterior teeth
Shed from the oral cavity
Short tubules that seem to crossover to the enamel
Formed by the fibroblast cells and secures the tooth in the socket

40. Xygote
Separation of the upper lip ( 1 of 1000 live births)
Hinge motion and gliding movement
When cells rapidly increase in number
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

41. Dentoperiosteal Fiber Groups
Elevates the posterior portion of the tongue and narrows the fauces
Triangular space in the gingival direction when two adjacent teeth are in contact
Supportive fibers that anchor the tooth to the bone
Tooth emerges from gum tissue and becomes visible

42. What is the largest cranial nerve and the most important to dental auxillaries and why?
The outer edge of the nostril
Divides the crown and the root
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Trigeminal nerve--because it ennervates the maxilla and the mandible

43. Mucosa
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Lining covers inside of the oral cavity
Small yellowish glands on the labial mucosa
Supplies blood to the brain and the eyes

44. Horizontal Fiber Group
Inside surface Which is towards the tongue - on anterior teeth
The development of different forms
Functions the same as the alveolar cfg; originate in alveolar bone
Wearing away of the incisal or occlusal surfaces of the tooth

45. What is the smallest tooth in dentition?
Duct located on the parotid papilla
Mandibular central incisors
Corners of the mouth
Enamel forming cells

46. Palatine Bones
Joined at the midline and are often referred to as the median Palatine suture
Secrete saliva to assist in process of digestion
1500 millimeters
The fixed attachment of a muscle

47. What are the largest and strongest of the mandibular teeth
A flap of tissue on the on the buccal mucosa
Extends from the mucogingival junction to the gingival groove
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
The mandibular molars

48. How many teeth are in the Primary teeth?
Duct located on the parotid papilla
20
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Smaller branch that ennervates the soft palate uvula and tonsils

49. Anomalies
Upper arch of the teeth
Excess bone in the middle of the palate
The portion of the tooth that meets the gingiva
Extreme variations from the norm

50. Fibroblasts
Cells From which connective tissue evolve
A pocket formed by the soft tissue of cheeks and gingiva
A shallow v-shaped depression located below the bottom of the nose and above the lips
Calcified masses of dentin