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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. Dentinal Fluid
Tissue fluid surrounding the cell membrane of the odontoblast
Two
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Excess bone in the middle of the palate

2. What is the purpose of permanent teeth?
Synovial fluid
Cut - tear - and grind food
Covers muscle tissue in the posterior portion of the palate
Mandibular central incisors

3. What are the eight landmarks of the face?
Oval structures that are located on the dorsal surface of the tongue
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Appears to be loosely attached - covering the alveolar bone.

4. Dentoperiosteal Fiber Groups
Supportive fibers that anchor the tooth to the bone
Forms into dentin - cementum and pulp of the teeth
A line that represents the alveolus bone lining the socket
Maxillary first molar

5. Stippled
The first predentin that is formed and matures within the tube
A triangular area located behind the last molar
Convex area on the lingual surface near gingiva
Healthy gingival tissue with an orange texture

6. Enamel Tufts
A line of tissue that extends from the tongue to the floor of the mouth
Small dark brushes
Drains the facial structures beginning near the eye and descending toward the mandible
Largest division of the trigeminal nerve

7. Lines of Retzius
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
Incremental lines around the layers of the enamel matrix
Pointed or rounded mounds on the crown of the tooth
Resists intrusive forces that try to push the tooth inwards

8. What teeth are removed if overcrowding occurs?
Buccal - lingual - and inferior alveolar
Triangular space in the gingival direction when two adjacent teeth are in contact
Drains the Pterygoid plexus of the veins
Bicuspids

9. Soft Palate
Healthy gingival tissue with an orange texture
Vertical groove on the midline of the upper lip
Bone that surrounds the root of the tooth
Covers muscle tissue in the posterior portion of the palate

10. What are the three muscles of the neck?
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Platysma - trapezius - sternocleidomastoid
12 years

11. Alveolar Mucosa
Drains the facial structures beginning near the eye and descending toward the mandible
Elevated are of enamel that forms the Mesial and distal borders
Appears to be loosely attached - covering the alveolar bone.
Cluster of tissue that manufactures and secrets fluid

12. Fetus
Forming organ takes shape and resembles the shape of a bell
9 weeks thru birth
Oval structures that are located on the dorsal surface of the tongue
Outside surface Which is towards the cheek - on posterior teeth

13. Gland
The bone that separates the root on a tooth
Draws down the mandible and corners of the mouth
Cluster of tissue that manufactures and secrets fluid
To dissolve

14. Oblique Ridge
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
An enclosed area that matures into dentin - cementum and pulp
Covers muscle tissue in the posterior portion of the palate
Mastication - aids in speech - influence facial structure - chewing surfaces

15. Gingiva
A dense tissue covered with mucous membrane that can withstand chewing
Composed of mucosa and surrounds the necks of the teeth
A line of demarcation between the attached gingiva and alveolar mucosa
Band of fibrous tissue which attaches muscle to bone

16. Imbracation Lines
Triangular space in the gingival direction when two adjacent teeth are in contact
Triferacated
Small curved lines that run parellel to the CEJ
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

17. Pulp horns
Allow flexibility during mastication - speech
Narrow long enamel tuft
Pointed elongations of the pulp
Extends from the medial corner of the eye to the nasal cavity

18. What are the four major muscles of facial expression
Orbicularis oris - buccinator - mentalis - zygomatic major
Linear elevation of the tooth
The largest of three openings located in the posterior region of the hard palate
Moves the head backward and laterally

19. Vestibule
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Elevates the posterior portion of the tongue and narrows the fauces
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
A pocket formed by the soft tissue of cheeks and gingiva

20. Ligament
Band of fibrous tissue which attaches bone to bone
Inside of the maxillary teeth
4 cusps/ bifurcated
Separation of the upper lip ( 1 of 1000 live births)

21. Labial-Mental Groove
Three bulges on the incisal edge
The groove below the lower lips that separates the lips from the chin
Divides the crown and the root
A projection that extends off the back of the soft palate

22. Occlusal
Pulverizing or chewing surface
Lining covers inside of the oral cavity
Three bulges on the incisal edge
Growth from the oral epithelium that gives rise to the tooth buds

23. If a patient receives toxic agents - how long does it take for their sense of taste to return?
The disc becomes displaced
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Drains the facial structures beginning near the eye and descending toward the mandible
10 days

24. Lateral Incisor
Surface away from the midline
Second teeth next to central incisors
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
2 small raised folds of tissue where the lingual frenum attaches

25. Lingual Foramen
Small bony projections surrounding the lingual foramen
Looking at the border of the tongue
Depresses the tongue
The internal surface at the center of the mandible

26. Mucogingival Junction
Secrete saliva to assist in process of digestion
Supplies blood to the roots and periodontal ligaments of the interior teeth
A line of demarcation between the attached gingiva and alveolar mucosa
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

27. Oblique Fiber Group
Mandibular central incisors
Resists intrusive forces that try to push the tooth inwards
The area on the crown of the tooth that is nearest the gingival
The mandibular first premolar

28. Alveolus
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Bone that surrounds the root of the tooth
Corners of the mouth
Enamel forming cells

29. Lobes
Radiates from the developmental groove
Developmental segment of a tooth
Surface away from the midline
Retracts the tongue and raises the tip of the tongue

30. Exfoliated
Palatoglossus - palatopharyngeal
Shed from the oral cavity
Small bony projections surrounding the lingual foramen
Causes a thickening of the cementum around the apex

31. Odontogenesis
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Origin of the tooth
Inside surface Which is towards the tongue - on anterior teeth
Small head - low nasal bridge - thin upper lip - small mandible

32. How many cusps/ roots do the 2/3rd mandibular molars have?
Buccal - lingual - and inferior alveolar
4 cusps/ bifurcated
6 years old
Week 11

33. What are the two muscles of the soft palate?
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Pointed elongations of the pulp
Palatoglossus - palatopharyngeal
Incremental line indicating trauma of birth

34. Greater Palatine Nerve
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
A junction or center of veins that directly or indirectly drain a vast area
Located on the inside of the body of the ramus
When cells rapidly increase in number

35. Lingual Vein
Assist in depressing the mandible and elevating the tongue
Drains the floor of the mouth
When the tissue becomes inflamed
Pulverizing or chewing surface

36. What is the largest cranial nerve and the most important to dental auxillaries and why?
Ligaments and muscles of mastication
Trigeminal nerve--because it ennervates the maxilla and the mandible
Found near the cementoenamel junction
Substances between cells

37. Mastoid process
Outside surface Which is towards the cheek - on posterior teeth
Elevates the posterior portion of the tongue and narrows the fauces
Interdental ligament
Bony projection found on the bottom border of the temporal bone

38. Lingual Frenum
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Secrete saliva to assist in process of digestion
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
A line of tissue that extends from the tongue to the floor of the mouth

39. Distal
Hinge motion and gliding movement
Act to maintain the gingival integrity of the marginal gingiva
Surface away from the midline
Supportive fibers that anchor the tooth to the bone

40. Clinical root
Responsible for laying down the enamel matrix into place
Wearing away of the incisal or occlusal surfaces of the tooth
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
Portion of the root seen in the oral cavity

41. What kind of root does the maxillary first molar have?
Triferacated
When cells rapidly increase in number
Teeth will not erupt in proper position
Clear fluid secreted by the salivary and mucous glands throughout the mouth

42. Posterior Superior Alveolar Nerve
Biting edge of the teeth
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Follows the inside of the ramus and the body of the mandible
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar

43. Palatine Bones
Orbicularis oris - buccinator - mentalis - zygomatic major
Joined at the midline and are often referred to as the median Palatine suture
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Greater - lesser - naso palatine nerves

44. Palatine Raphe
Third tooth from the midline
Formed by the uniting of lobes during development of crown
The slightly raised line extending down the middle of the hard palate
Study of prenatal growth and the developing process of an individual

45. Anterior Alveolar Nerve
Growth from the oral epithelium that gives rise to the tooth buds
Study of prenatal growth and the developing process of an individual
Of or pertaining to area surrounding naval cavity
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

46. Convects
Curve outward
Tooth emerges from gum tissue and becomes visible
Largest of the branches of the external carotid artery; supplies facial structure
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

47. Sublingual Caruncles
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Joined at the midline and are often referred to as the median Palatine suture
2 small raised folds of tissue where the lingual frenum attaches
Where the ectoderm layer matures into the enamel

48. What are the 4 muscles of the floor of the mouth?
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Function to resist rotational forces and tilting
Digstric - Mylohyoid - stylohyoid - geniohyoid
A bony plate covered with keratinized tissue located in the anterior portion of the palate

49. Fibroblasts
Portion covered with cementum
Cells From which connective tissue evolve
Elevates the posterior portion of the tongue and narrows the fauces
Linear elevation of the tooth

50. Secondary palate
Disk that acts like a cushion between the temporal bone and the condyloid process
Forms the remaining 2/3 of the hard and soft palate uvula
Act to maintain the gingival integrity of the marginal gingiva
Inner portion of the enamel rod