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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. Sublingual Sulcus
Small raised projections where taste buds are located
A horseshoe shaped groove that follow the curve of the dental arch
A junction or center of veins that directly or indirectly drain a vast area
Resulting from an imperfect union where the lobes come together

2. External Auditory Meatus
Resist rotational forces and hold teeth in inter-proximal contact
Raised vertical folds of tissue on the lateral border of the tongue
Compact bone plate of the facial and lingual surfaces
Opening for the ear

3. Gingival Groove
Draws down the mandible and corners of the mouth
The first predentin that is formed and matures within the tube
The line of demarcation between the attached gingiva and the marginal gingiva
Forms after the completion of the apical foramen

4. Dental Lamina
Covers muscle tissue in the posterior portion of the palate
Growth from the oral epithelium that gives rise to the tooth buds
4 cusps/ bifurcated
Disk that acts like a cushion between the temporal bone and the condyloid process

5. Posterior Teeth
The teeth located at the back of the mouth
No bicuspids/ no 3rd molars
Stained growth rings in dentin
Hinge motion and gliding movement

6. Mental Nerve Branch
Biting edge of the teeth
Formed by the fibroblast cells and secures the tooth in the socket
12 years
Largest division of the trigeminal nerve

7. Morpho differentiation
The development of different forms
The bone that separates the root on a tooth
Excess dryness of the mouth
Small dark brushes

8. Parotid Papilla
A raised area of tissue laying behind the maxillary central incisors on the hard palate
A flap of tissue on the on the buccal mucosa
Band of fibrous tissue which attaches muscle to bone
Orbicularis oris - buccinator - mentalis - zygomatic major

9. Xerostomia
Found near the cementoenamel junction
Digstric - Mylohyoid - stylohyoid - geniohyoid
Excess dryness of the mouth
Cheek bones--the most breakable bone in the body

10. Maxillary vein
To dissolve
Drains the Pterygoid plexus of the veins
Lift the hyoid bone and assist in opening the mouth
Upper arch of the teeth

11. Stensens' Duct (aka Parotid)

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12. Gingival Sulcus
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
The space between the unattached gingiva and the tooth
Outside surface Which is towards the cheek - on posterior teeth
Drains the floor of the mouth

13. Cervical Third
The area on the crown of the tooth that is nearest the gingival
Quarters of the teeth
Cut - tear - and grind food
A triangular area located behind the last molar

14. Facial Vein
Drains the facial structures beginning near the eye and descending toward the mandible
The largest of three openings located in the posterior region of the hard palate
Used to pulverize food
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

15. Attached Gingiva
Extends from the mucogingival junction to the gingival groove
What divides the tongue in half and runs from the base to the tip of the tongue
A rounded area beyond the last posterior maxillary tooth
Layers of tooth tissue become calcified

16. Mastication
Chewing and swallowing food
Scroll like bones outside the nasal cavaties
Greater - lesser - naso palatine nerves
Forming organ takes shape and resembles the shape of a bell

17. Lamina Dura
A line that represents the alveolus bone lining the socket
Portion of the lips that are red
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Slight ridges on the cervical third of certain teeth that extend mesiodistally

18. Periodontium
Tissue covering the alveolar processes
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
The layer of dentin that surrounds the pulp
Largest division of the trigeminal nerve

19. What are the four major muscles of facial expression
Largest facial bone with two sections joined at the median suture
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Orbicularis oris - buccinator - mentalis - zygomatic major
Molars

20. Attrition
Drains the superficial veins of the face and neck into the subclavian vein
A bony projection that separates each socket
When the surface of the teeth becomes grooved
Wearing away of the incisal or occlusal surfaces of the tooth

21. Buccal Mucosa
The inner surface of the cheeks
Mucosa that covers the alveolar bone
Covering over the enamel that is left over from the epithelium ameloblasts
The area on the crown of the tooth that is nearest the gingival

22. Where is the palate located?
Inside of the maxillary teeth
Incremental lines around the layers of the enamel matrix
Third tooth from the midline
Small raised projections where taste buds are located

23. Labial-Mental Groove
Extends from the mucogingival junction to the gingival groove
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
Portion of the lips that are red
The groove below the lower lips that separates the lips from the chin

24. Histo Differentiation
Wings of the sphenoid bone
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Cells develop into different tissues
Surface towards the midline

25. Labial Commissures
Where the proximal sides of two teeth come together and touch
Corners of the mouth
Divides the crown and the root
An enclosed area that matures into dentin - cementum and pulp

26. Quadrants
Vertical groove on the midline of the upper lip
Of or pertaining to area surrounding naval cavity
The layer of dentin that surrounds the pulp
Quarters of the teeth

27. Apical Fiber Group
Small head - low nasal bridge - thin upper lip - small mandible
The teeth located at the back of the mouth
Resists forces that try to pull the tooth outward
Occurs in unusual ways and distorted crowns may appear

28. What are the 4 cranial nerves that ennervate the face and oral cavity
Smaller branch that ennervates the soft palate uvula and tonsils
An overgrowth of the gingival tissue
Trigeminal - facial - glossopharyngeal - hypoglossal
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

29. Circumvallate Papillae
Mucosa that covers the alveolar bone
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Primary and permanent
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

30. What are the only permeant teeth that are not succedaneous?
Molars
Ligaments and muscles of mastication
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
The layer of dentin that surrounds the pulp

31. Dental Sac
An enclosed area that matures into dentin - cementum and pulp
Pointed elongations of the pulp
Wearing away of the incisal or occlusal surfaces of the tooth
Set of arches found farther in the back of the throat

32. Function of Digastric
2 to 3 pints
Lift the hyoid bone and assist in opening the mouth
Place where the groove comes together or fissures cross
Shaping the tongue during speech - mastication and swallowing

33. Internal Carotid Artery
Stained growth rings in dentin
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Supplies blood to the brain and the eyes
Drains the maxiallary artery and superficial temporal arteries

34. Anterior Tonsillar Pillar
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
4th week
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Incremental line indicating trauma of birth

35. Tubercle of the Lip
Located in a depressed area between the pillars
Causes a thickening of the cementum around the apex
Retracts or depresses the tongue
A small projection in the middle of the upper lip

36. Enamel Dysplasia
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Corners of the mouth
When the surface of the teeth becomes grooved
The corners of the mouth where the top and bottom lip meet

37. TMJ bones are bathed In what solution?
The inner surface of the cheeks
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Synovial fluid
4 cusps/ bifurcated

38. Palatine Raphe
Disk that acts like a cushion between the temporal bone and the condyloid process
The slightly raised line extending down the middle of the hard palate
Supplies blood to the roots and periodontal ligaments of the interior teeth
Cells that form dentin

39. Xygote
Two vertical extensions of the mandible
Separates the developing oral cavities from the nasal cavities
When cells rapidly increase in number
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

40. Taste Buds
Oval structures that are located on the dorsal surface of the tongue
Functions the same as the alveolar cfg; originate in alveolar bone
A junction or center of veins that directly or indirectly drain a vast area
A projection that extends off the back of the soft palate

41. Distal
Digstric - Mylohyoid - stylohyoid - geniohyoid
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Bi-cuspids
Surface away from the midline

42. Occlusal
Largest division of the trigeminal nerve
Disk that acts like a cushion between the temporal bone and the condyloid process
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Pulverizing or chewing surface

43. Ligament
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Band of fibrous tissue which attaches bone to bone
4 cusps/ bifurcated
Resists forces that try to pull the tooth outward

44. Function of Geneoglossus?
Retracts or depresses the tongue
The layer of dentin that surrounds the pulp
Follows the inside of the ramus and the body of the mandible
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

45. Oblique Ridge
Elevated are of enamel that forms the Mesial and distal borders
The moveable attachment of the muscle
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
A junction or center of veins that directly or indirectly drain a vast area

46. What are the three muscles of the neck?
Drains the superficial veins of the face and neck into the subclavian vein
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Platysma - trapezius - sternocleidomastoid

47. What is saliva made of?
The first predentin that is formed and matures within the tube
A faint line going from the ala of the nose to the corner of the mouth
Responsible for laying down the enamel matrix into place
H20 - mucin - organic salts and digestive enzymes

48. What are the 4 maxillary nerve branches?
Inside surface Which is towards the tongue - on anterior teeth
Primary and permanent
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
When the tissue becomes inflamed

49. Marginal Ridges
A projection that extends off the back of the soft palate
Convex area on the lingual surface near gingiva
When the surface of the teeth becomes grooved
Elevated are of enamel that forms the Mesial and distal borders

50. Mesoderm
Depresses the tongue
Vertical groove on the midline of the upper lip
Forms into dentin - cementum and pulp of the teeth
The layer of dentin that surrounds the pulp