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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. Maxillary Artery
The teeth located at the back of the mouth
Largest of the branches of the external carotid artery; supplies facial structure
Molars
When the surface of the teeth becomes grooved

2. Furcation
Largest division of the trigeminal nerve
Aid in attaching the gingiva to the alveolar bone
Second teeth next to central incisors
Dividing point of a multi-rooted tooth

3. What is the purpose of saliva?
Dividing point of a multi-rooted tooth
To lubricate the oral cavity and to moisten food
Retracts the tongue and raises the tip of the tongue
Indented

4. Ectoderm
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Origin of the tooth
Assist in depressing the mandible and elevating the tongue
(free gingiva) surrounds the teeth

5. Mamelons
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Joined at the midline and are often referred to as the median Palatine suture
Three bulges on the incisal edge

6. Secondary palate
Mucosa that covers the alveolar bone
A projection that extends off the back of the soft palate
Forms the remaining 2/3 of the hard and soft palate uvula
Formed by the fibroblast cells and secures the tooth in the socket

7. Enamel Lamellae
Cut - tear - and grind food
Narrow long enamel tuft
When the tissue becomes inflamed
Upper arch of the teeth

8. Morpho differentiation
The corners of the mouth where the top and bottom lip meet
The development of different forms
Primary and permanent
Convex area on the lingual surface near gingiva

9. External Carotid Artery
Supplies blood to the face and oral cavity
Ligaments and muscles of mastication
Bone that surrounds the root of the tooth
Forms the remaining 2/3 of the hard and soft palate uvula

10. Function of Geniohyoid
Forms the bulk of the tooth
Inside surface Which is towards the tongue - on anterior teeth
Band of fibrous tissue which attaches bone to bone
Pulls the hyoid bone and the tongue anteriorly

11. Cleft Lip
Full deep rich sound in nasal cavity
Separation of the upper lip ( 1 of 1000 live births)
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Vertical groove on the midline of the upper lip

12. Xygote
Where the ramus meets the body of the mandible on the outside border
Conception thru the first two weeks
Week 11
Composed of mucosa and surrounds the necks of the teeth

13. Nasolacrimal groove
Circle and tighten the gingival margin around the neck of the tooth
The deepest point of the vestibule
Folds of tissue to the the lingual veins
Extends from the medial corner of the eye to the nasal cavity

14. Vestibule
A pocket formed by the soft tissue of cheeks and gingiva
Outside surface Which is towards the lips
Enamel forming cells
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch

15. Incisal Edge
Quarters of the teeth
Biting edge of the teeth
The development of different cells
The deepest point of the vestibule

16. Central Incisor
What divides the tongue in half and runs from the base to the tip of the tongue
Shed from the oral cavity
The development of different tissues
Middle two teeth in the mouth

17. Proliferation
Where the ectoderm layer matures into the enamel
Small head - low nasal bridge - thin upper lip - small mandible
1500 millimeters
Peg shaped crown with a smooth surface

18. Mesoderm
6 months/3years
The area on the crown of the tooth that is nearest the gingival
Forms into dentin - cementum and pulp of the teeth
The groove below the lower lips that separates the lips from the chin

19. Peg lateral
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
Secrete saliva to assist in process of digestion
Peg shaped crown with a smooth surface
Appears to be loosely attached - covering the alveolar bone.

20. When do oral and nasal cavity separate and palate develop?
Molars
Week 12
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
Small head - low nasal bridge - thin upper lip - small mandible

21. Gland
Small head - low nasal bridge - thin upper lip - small mandible
A triangular area located behind the last molar
Full deep rich sound in nasal cavity
Cluster of tissue that manufactures and secrets fluid

22. What are the four major muscles of facial expression
Orbicularis oris - buccinator - mentalis - zygomatic major
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Constricts the nasopharyngeal passage and elevates the larynx
The layer of dentin that surrounds the pulp

23. How is the TMJ supported and what controls their movement?
Portion covered with cementum
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Ligaments and muscles of mastication
Developmental segment of a tooth

24. Cervical line
Divides the crown and the root
Portion of the lips where the skin meets the vermilion zone
Digstric - Mylohyoid - stylohyoid - geniohyoid
The moveable attachment of the muscle

25. Frenum
Biting edge of the teeth
Chewing and swallowing food
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle

26. Linea Alba
Oval structures that are located on the dorsal surface of the tongue
Extreme variations from the norm
Supplies blood to the face and oral cavity
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

27. What kind of root does the maxillary first molar have?
Branches off the inferior alveolar artery before intering the mandibular canal
A period of both primary teeth and permeant teeth are in the dentition
Triferacated
Primary embryonic mesoderm layer that develops during the morpho differentiation period

28. Hyoid Bone
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
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 development of different tissues
The inner surface of the cheeks

29. When do the tooth buds appear?
Week 11
Radiates from the developmental groove
A bony projection that separates each socket
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone

30. What is the most common problem with TMJ
The deepest point of the vestibule
The disc becomes displaced
Excess bone formations under the tongue on the alvellar bone
Fleshy elevation under the tongue

31. Histo Differentiation
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Narrow long enamel tuft
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Cells develop into different tissues

32. Function of Sternocleidomastoid
The largest of three openings located in the posterior region of the hard palate
The largest of the salivary glands which lie just below and in front of the ear
A pocket formed by the soft tissue of cheeks and gingiva
Assists in elevating the chin

33. Which molar contains the cusp of Caribelli?
Small yellowish glands on the labial mucosa
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Maxillary first molar
The crown of the tooth that is nearest the incisal edge near the anterior tooth

34. Pterygoid Process
Responsible for laying down the enamel matrix into place
Retracts or depresses the tongue
Wings of the sphenoid bone
Creates the wall of the dentinal tubule

35. If a patient receives toxic agents - how long does it take for their sense of taste to return?
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
10 days
Ligaments and muscles of mastication

36. What teeth do the deciduous (baby) tooth not include?
Oval depression of temporal bone in condyloid process
6 months/3years
No bicuspids/ no 3rd molars
Compact bone plate of the facial and lingual surfaces

37. Nasal-Labial Groove
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Formed by the fibroblast cells and secures the tooth in the socket
A faint line going from the ala of the nose to the corner of the mouth
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

38. Mixed Dentition
A period of both primary teeth and permeant teeth are in the dentition
Two vertical extensions of the mandible
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Located behind the ramus of the mandible and branches into five arteries

39. Internal Carotid Artery
Papillae that give the tongue the strawberry effect
Resists intrusive forces that try to push the tooth inwards
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Supplies blood to the brain and the eyes

40. How many roots/ cusps does the mandibular first molar have?
When the dentin is exposed
Second teeth next to central incisors
Bifurcated/ 5 cusps
The area on the crown of the tooth that is nearest the gingival

41. Alveolar Crest Fiber Group
Function to resist rotational forces and tilting
Bicuspids
The teeth located at the back of the mouth
Wearing away of the incisal or occlusal surfaces of the tooth

42. Dental Lamina
The first predentin that is formed and matures within the tube
The space between the unattached gingiva and the tooth
Growth from the oral epithelium that gives rise to the tooth buds
The teeth located at the back of the mouth

43. What is saliva made of?
H20 - mucin - organic salts and digestive enzymes
An overgrowth of the gingival tissue
Healthy gingival tissue with an orange texture
Substances between cells

44. What are the 4 cranial nerves that ennervate the face and oral cavity
Rounded depression on a tooth
Trigeminal - facial - glossopharyngeal - hypoglossal
Orbicularis oris - buccinator - mentalis - zygomatic major
The area on the crown of the tooth that is nearest the gingival

45. Retro Mandibular Vein
Shaping the tongue during speech - mastication and swallowing
Folds of tissue that extend horizontally from the uvula to the base of the tongue
A line of demarcation between the attached gingiva and alveolar mucosa
Drains the maxiallary artery and superficial temporal arteries

46. Enamel Tufts
Portion of the root seen in the oral cavity
Incremental line indicating trauma of birth
Small dark brushes
Oval depression of temporal bone in condyloid process

47. Fimbriated Folds
Folds of tissue to the the lingual veins
Second teeth next to central incisors
The slightly raised line extending down the middle of the hard palate
Palatoglossus - palatopharyngeal

48. What are the 4 pairs of muscles of mastication!
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
12 years
Elevated are of enamel that forms the Mesial and distal borders
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

49. TMJ bones are bathed In what solution?
Natural teeth in position
Synovial fluid
Small curved lines that run parellel to the CEJ
A dense tissue covered with mucous membrane that can withstand chewing

50. Infraorbital Foramen
Oval depression of temporal bone in condyloid process
Opening in the mouth below the orbit on the maxillary bone
Curve outward
Portion covered with cementum