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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.
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. Contour Lines of Owen
Composed of mucosa and surrounds the necks of the teeth
The teeth located at the back of the mouth
20
Demonstrates a disturbance in the body metabolism

2. Incisive Papilla
A raised area of tissue laying behind the maxillary central incisors on the hard palate
A condition where the lower frenum attachment is very short/DDS/frenectomy
To dissolve
Separates the developing oral cavities from the nasal cavities

3. Zygomatic nerve
Located on the inside of the body of the ramus
Outside surface Which is towards the cheek - on posterior teeth
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Chewing and swallowing food

4. Mesoderm
Set of arches found farther in the back of the throat
Forms into dentin - cementum and pulp of the teeth
Responsible for laying down the enamel matrix into place
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

5. Central Incisor
No bicuspids/ no 3rd molars
Middle two teeth in the mouth
20
Synovial fluid

6. Cemental Spurs
Divides the crown and the root
Molars
A flap of tissue on the on the buccal mucosa
Found near the cementoenamel junction

7. Xygomatic bones
Maxillary first molar
To bulge of curve outward
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Cheek bones--the most breakable bone in the body

8. Stippled
Two
The deepest point of the vestibule
Maxillary first molar
Healthy gingival tissue with an orange texture

9. External Oblique Ridge
A line of demarcation between the attached gingiva and alveolar mucosa
Follows the length of the body of the mandible past the last tooth and up to the ramus
The inner surface of the lips
Teeth will not erupt in proper position

10. If Palate not fused
Teeth will not erupt in proper position
The deepest point of the vestibule
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Glands the size of a walnut that lie on the inside of the mandible and empty saliva into the mouth thru the Wharton's duct

11. Lobes
Vertical groove on the midline of the upper lip
The ridges that run horizontally across the hard palate behind the incisive papilla
Assist in the movement and functioning of the tongue
Developmental segment of a tooth

12. What are the 4 maxillary nerve branches?
Synovial fluid
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
A rounded area beyond the last posterior maxillary tooth
Forms into dentin - cementum and pulp of the teeth

13. Labial Commissures
Corners of the mouth
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
The cornerstone of the mouth
Separation of the upper lip ( 1 of 1000 live births)

14. Mental Artery
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Wings of the sphenoid bone
Radiates from the developmental groove
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

15. Succedaneous teeth
Covering over the enamel that is left over from the epithelium ameloblasts
Tooth emerges from gum tissue and becomes visible
Triangular space in the gingival direction when two adjacent teeth are in contact
Permeante teeth replace the primary teeth

16. Embryo
Mandibular central incisors
Bluish veins that run the length of the tongue
Two weeks thru 8th week
Three cusps/ trifurcated

17. External Jugular Vein
The internal surface at the center of the mandible
Extreme variations from the norm
Molars
Drains the superficial veins of the face and neck into the subclavian vein

18. How many cusps does the second bicuspid have?
Corners of the mouth
Two
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
4 cusps/ bifurcated

19. What are the 2 sets of teeth?
Primary and permanent
The space between the unattached gingiva and the tooth
Interdental ligament
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

20. Angle of the Mandible
Where the ramus meets the body of the mandible on the outside border
Cheek bones--the most breakable bone in the body
The disc becomes displaced
Drains the Pterygoid plexus of the veins

21. Perikymata
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Portion of the lips that are red
Small grooves noted on some teeth
Constricts the nasopharyngeal passage and elevates the larynx

22. Mandible Arch
Assist in depressing the mandible and elevating the tongue
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Oval depression of temporal bone in condyloid process
Lower arch of the teeth

23. Primary palate
Supportive fibers that anchor the tooth to the bone
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Separates the developing oral cavities from the nasal cavities
Largest of the branches of the external carotid artery; supplies facial structure

24. Hyoid Bone
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
A line that represents the alveolus bone lining the socket
Lower arch of the teeth
Covers muscle tissue in the posterior portion of the palate

25. Lacrimal Bones
Incremental lines around the layers of the enamel matrix
Located on the inside of the body of the ramus
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Resist rotational forces and hold teeth in inter-proximal contact

26. Common Carotid
Disk that acts like a cushion between the temporal bone and the condyloid process
Arteries supplying blood to most of the head and the neck
Dentin found between the tubules
No bicuspids/ no 3rd molars

27. Saliva
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Located on the inside of the body of the ramus
Arteries supplying blood to most of the head and the neck
A bony projection that separates each socket

28. Furcation
Initiation of the tooth begins
The space between the unattached gingiva and the tooth
Dividing point of a multi-rooted tooth
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

29. Oblique Ridge
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Assist in depressing the mandible and elevating the tongue
Bicuspids
Digstric - Mylohyoid - stylohyoid - geniohyoid

30. Styloid Process
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Causes a thickening of the cementum around the apex
Sharp projection on the under surface of the temporal bone
Indented

31. Mylohyoid Nerve Branch
Inside surface Which is towards the tongue - on anterior teeth
Drains the Pterygoid plexus of the veins
Genioglossus - hyoglossus - styloglossus - palatoglossus
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle

32. Internal Oblique Ridge
Raised vertical folds of tissue on the lateral border of the tongue
Outside surface Which is towards the cheek - on posterior teeth
Inside of the maxillary teeth
Follows the inside of the ramus and the body of the mandible

33. What is the smallest tooth in dentition?
Acts as anchors between the alveolar bone and the tooth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Forming organ takes shape and resembles the shape of a bell
Mandibular central incisors

34. Vermilion Zone
Portion of the lips that are red
Constricts the nasopharyngeal passage and elevates the larynx
Dentin found between the tubules
6 years old

35. Lesser Palatine Nerve
Rounded depression on a tooth
The largest of three openings located in the posterior region of the hard palate
Smaller branch that ennervates the soft palate uvula and tonsils
A condition where the lower frenum attachment is very short/DDS/frenectomy

36. Mantle Dentin
The first predentin that is formed and matures within the tube
Forms a large cavity above the roots of the maxillary molars
The mandibular first premolar
Slight ridges on the cervical third of certain teeth that extend mesiodistally

37. Morpho Differentiation
Portion covered with cementum
Forming organ takes shape and resembles the shape of a bell
A line of tissue that extends from the tongue to the floor of the mouth
2 small raised folds of tissue where the lingual frenum attaches

38. Agenesis
Occurs in unusual ways and distorted crowns may appear
A small projection in the middle of the upper lip
Rounded depression on a tooth
Incremental lines around the layers of the enamel matrix

39. Pulp horns
Pointed elongations of the pulp
Folds of tissue to the the lingual veins
Origin - fixed point - insertion - movable point
Oval depression of temporal bone in condyloid process

40. Papilla
Disk that acts like a cushion between the temporal bone and the condyloid process
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Small raised projections where taste buds are located
Maxillary first molar

41. Bud stage
Initiation of the tooth begins
20
A line that represents the alveolus bone lining the socket
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

42. Secondary Dentin
Initiation of the tooth begins
Forms after the completion of the apical foramen
A period of both primary teeth and permeant teeth are in the dentition
Circle and tighten the gingival margin around the neck of the tooth

43. Imbracation Lines
Origin - fixed point - insertion - movable point
Indented
Small curved lines that run parellel to the CEJ
Inside of the maxillary teeth

44. Transverse Ridge
Teeth after cuspids
The development of different cells
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Convex area on the lingual surface near gingiva

45. What are the 4 cranial nerves that ennervate the face and oral cavity
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Cut - tear - and grind food
Trigeminal - facial - glossopharyngeal - hypoglossal
Primary embryonic mesoderm layer that develops during the morpho differentiation period

46. What are the 4 pairs of muscles of mastication!
Small dark brushes
Upper arch of the teeth
Elevates the posterior portion of the tongue and narrows the fauces
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

47. Anomalies
Curve outward
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
Extreme variations from the norm
12 years

48. Ridge
Follows the inside of the ramus and the body of the mandible
Oval structures that are located on the dorsal surface of the tongue
The ridges that run horizontally across the hard palate behind the incisive papilla
Linear elevation of the tooth

49. Lateral Incisor
Second teeth next to central incisors
Substances between cells
Pulverizing or chewing surface
Ligaments and muscles of mastication

50. Ala of the Nose
Biting edge of the teeth
The outer edge of the nostril
9 months (5 months ultrasound to tell sex)
Band of fibrous tissue which attaches muscle to bone