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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. Dentoperiosteal Fiber Groups
Buccal - lingual - and inferior alveolar
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Substances between cells
Supportive fibers that anchor the tooth to the bone

2. Maxillary Artery
Acts as anchors between the alveolar bone and the tooth
Largest of the branches of the external carotid artery; supplies facial structure
Bone that surrounds the root of the tooth
Radiates from the developmental groove

3. Sublingual Caruncles
Bony projection found on the bottom border of the temporal bone
2 small raised folds of tissue where the lingual frenum attaches
Supportive fibers that anchor the tooth to the bone
Retracts the tongue and raises the tip of the tongue

4. If Palate not fused
Teeth will not erupt in proper position
The development of different cells
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
The connective tissue of the marginal gingiva

5. Resonance
What divides the tongue in half and runs from the base to the tip of the tongue
Looking at the border of the tongue
Forms after the completion of the apical foramen
Full deep rich sound in nasal cavity

6. Mylohyoid Nerve Branch
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
The gingiva in the floor of the gingival sulcus that attaches to the enamel
4/5 cusps/ 3 roots
Draws down the mandible and corners of the mouth

7. TMJ bones are bathed In what solution?
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Band of fibrous tissue which attaches muscle to bone
Radiates from the developmental groove
Synovial fluid

8. Nasmyths Membrane
Where the ramus meets the body of the mandible on the outside border
Elevates the posterior portion of the tongue and narrows the fauces
Assist in the movement and functioning of the tongue
Covering over the enamel that is left over from the epithelium ameloblasts

9. Embrasure
Triangular space in the gingival direction when two adjacent teeth are in contact
Respiratory system - digestive system and glandular organs
Located in a depressed area between the pillars
Occurs in unusual ways and distorted crowns may appear

10. Labial-Mental Groove
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
The groove below the lower lips that separates the lips from the chin
Bicuspids
A shallow v-shaped depression located below the bottom of the nose and above the lips

11. Interradical Fiber Group
Found only in multi-rooted teeth and resists rotational forces
Separates the developing oral cavities from the nasal cavities
Orbicularis oris - buccinator - mentalis - zygomatic major
Located in a depressed area between the pillars

12. Which molar is the wisdom tooth
The mandibular molars
A horseshoe shaped groove that follow the curve of the dental arch
4th week
Maxillary third molar

13. Odontal Fiber Groups
Papillae that give the tongue the strawberry effect
Smaller branch that ennervates the soft palate uvula and tonsils
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Allow flexibility during mastication - speech

14. How many roots/ cusps does the mandibular first molar have?
Bifurcated/ 5 cusps
The gingiva in the floor of the gingival sulcus that attaches to the enamel
The groove below the lower lips that separates the lips from the chin
A projection that extends off the back of the soft palate

15. Perikymata
Small grooves noted on some teeth
A condition where the lower frenum attachment is very short/DDS/frenectomy
Bicuspids
The crown of the tooth that is nearest the incisal edge near the anterior tooth

16. Meniscus
Rounded depression on a tooth
Triferacated
Disk that acts like a cushion between the temporal bone and the condyloid process
The inner surface of the lips

17. Enamel Lamellae
Moves the head backward and laterally
Corners of the mouth
Small dark brushes
Narrow long enamel tuft

18. Pulp horns
Joined at the midline and are often referred to as the median Palatine suture
Pointed elongations of the pulp
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Acts as anchors between the alveolar bone and the tooth

19. Secondary palate
Inside surface Which is towards the tongue - on anterior teeth
When the tissue becomes inflamed
Located behind the ramus of the mandible and branches into five arteries
Forms the remaining 2/3 of the hard and soft palate uvula

20. External Jugular Vein
Drains the superficial veins of the face and neck into the subclavian vein
Band of fibrous tissue which attaches muscle to bone
What divides the tongue in half and runs from the base to the tip of the tongue
A junction or center of veins that directly or indirectly drain a vast area

21. Lingual Frenum
Mucosa that covers the alveolar bone
Stained growth rings in dentin
Platysma - trapezius - sternocleidomastoid
A line of tissue that extends from the tongue to the floor of the mouth

22. Common Carotid
The cornerstone of the mouth
Formed by the uniting of lobes during development of crown
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Arteries supplying blood to most of the head and the neck

23. Succedaneous teeth
(free gingiva) surrounds the teeth
The space between the unattached gingiva and the tooth
The development of different tissues
Permeante teeth replace the primary teeth

24. Mucogingival Junction
A line of demarcation between the attached gingiva and alveolar mucosa
Found only in multi-rooted teeth and resists rotational forces
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Mastication - aids in speech - influence facial structure - chewing surfaces

25. Enamel Tufts
A line that represents the alveolus bone lining the socket
Mandibular central incisors
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Small dark brushes

26. Periodontal Ligaments
The mandibular first premolar
Pointed or rounded mounds on the crown of the tooth
Upper arch of the teeth
Formed by the fibroblast cells and secures the tooth in the socket

27. Gestational period
Sharp projection on the under surface of the temporal bone
9 months (5 months ultrasound to tell sex)
Oval depression of temporal bone in condyloid process
A raised area of tissue laying behind the maxillary central incisors on the hard palate

28. Lingual
Arteries supplying blood to most of the head and the neck
Pulverizing or chewing surface
6 months/3years
Inside surface Which is towards the tongue - on anterior teeth

29. Cervical line
Enamel is thinner - pulp chamber is smaller -
Cut - tear - and grind food
Supplies blood to the roots and periodontal ligaments of the interior teeth
Divides the crown and the root

30. Pterygoid Artery
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Indented
Natural teeth in position

31. Mucosa
Drains the superficial veins of the face and neck into the subclavian vein
A line of tissue that extends from the tongue to the floor of the mouth
Stained growth rings in dentin
Lining covers inside of the oral cavity

32. When do the tooth buds appear?
Week 11
1500 millimeters
Separates the developing oral cavities from the nasal cavities
Full deep rich sound in nasal cavity

33. Periodontium
6 months/3years
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
The internal surface at the center of the mandible
Functions the same as the alveolar cfg; originate in alveolar bone

34. Incisal third
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Pulls the hyoid bone and the tongue anteriorly
Cells develop into different tissues
The crown of the tooth that is nearest the incisal edge near the anterior tooth

35. Free Gingiva
The portion of the tooth that meets the gingiva
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Oval structures that are located on the dorsal surface of the tongue
Wearing away of the incisal or occlusal surfaces of the tooth

36. Pit
Place where the groove comes together or fissures cross
The largest of three openings located in the posterior region of the hard palate
Act to maintain the gingival integrity of the marginal gingiva
Occurs in unusual ways and distorted crowns may appear

37. Attrition
Compact bone plate of the facial and lingual surfaces
Peg shaped crown with a smooth surface
Genioglossus - hyoglossus - styloglossus - palatoglossus
Wearing away of the incisal or occlusal surfaces of the tooth

38. Lateral Incisor
Supplies blood to the roots and periodontal ligaments of the interior teeth
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
Second teeth next to central incisors
Initiation of the tooth begins

39. Imbracation Lines
Outside surface Which is towards the lips
Function to resist rotational forces and tilting
Retracts or depresses the tongue
Small curved lines that run parellel to the CEJ

40. Occlusion third
Formed by the fibroblast cells and secures the tooth in the socket
Orbicularis oris - buccinator - mentalis - zygomatic major
4th week
Occlusal surface of the posterior tooth

41. Apposition
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Calcium salts are deposited into formed tooth
Small linear depression
Curve outward

42. Attached Gingiva
Three cusps/ trifurcated
Cut - tear - and grind food
Extends from the mucogingival junction to the gingival groove
The outer edge of the nostril

43. Sharpey's Fibers
The disc becomes displaced
Inside of the maxillary teeth
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
Acts as anchors between the alveolar bone and the tooth

44. Infraorbital Foramen
Drains the Pterygoid plexus of the veins
Opening in the mouth below the orbit on the maxillary bone
The cornerstone of the mouth
A triangular area located behind the last molar

45. Torus Mandibularis
Excess bone formations under the tongue on the alvellar bone
Extreme variations from the norm
A dense tissue covered with mucous membrane that can withstand chewing
A faint line going from the ala of the nose to the corner of the mouth

46. What are the largest and strongest of the mandibular teeth
Rounded depression on a tooth
Drains the maxiallary artery and superficial temporal arteries
Follows the inside of the ramus and the body of the mandible
The mandibular molars

47. What teeth do the deciduous (baby) tooth not include?
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Study of the structure and form of the teeth
No bicuspids/ no 3rd molars
A dense tissue covered with mucous membrane that can withstand chewing

48. Endoderm
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
Respiratory system - digestive system and glandular organs
Portion of the lips where the skin meets the vermilion zone
Enamel is thinner - pulp chamber is smaller -

49. Incisive Arteries
Middle line of the teeth
Platysma - trapezius - sternocleidomastoid
Supplies blood to the roots and periodontal ligaments of the interior teeth
Forms the bulk of the tooth

50. How can you tell if someone has cancer by looking at the tongue?
Drains the floor of the mouth
Looking at the border of the tongue
Narrow long enamel tuft
A bat shaped bone which forms the anterior portion of the skull