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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. Muscle origine
The fixed attachment of a muscle
Assist in depressing the mandible and elevating the tongue
Indented
Forms into the inner lining of the oral cavitiy and enamel of the teeth

2. Lesser Palatine Nerve
The deepest point of the vestibule
Surface away from the midline
Causes a thickening of the cementum around the apex
Smaller branch that ennervates the soft palate uvula and tonsils

3. Dentoperiosteal Fiber Groups
A dense tissue covered with mucous membrane that can withstand chewing
Dividing point of a multi-rooted tooth
Supportive fibers that anchor the tooth to the bone
9 months (5 months ultrasound to tell sex)

4. Alveolar Mucosa
Mucosa that covers the alveolar bone
4/5 cusps/ 3 roots
Trigeminal - facial - glossopharyngeal - hypoglossal
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

5. Odontal Fiber Groups
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
4/5 cusps/ 3 roots
Tubules that pass through the entire surface of the dentin
Allow flexibility during mastication - speech

6. Odontoblast
An extension of an unattached gingiva and the tooth
Pointed elongations of the pulp
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Cells that form dentin

7. Mucogingival Junction
Bony projection found on the bottom border of the temporal bone
Portion of the lips that are red
A line of demarcation between the attached gingiva and alveolar mucosa
Indented

8. Primary Dentin
Small curved lines that run parellel to the CEJ
The ridges that run horizontally across the hard palate behind the incisive papilla
Forms the bulk of the tooth
6 months/3years

9. What are the 4 cranial nerves that ennervate the face and oral cavity
Trigeminal - facial - glossopharyngeal - hypoglossal
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Largest division of the trigeminal nerve

10. Cleft Palate
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
The first predentin that is formed and matures within the tube
Located on the inside of the body of the ramus
A line of tissue that extends from the tongue to the floor of the mouth

11. Greater Palatine Foramen
Joined at the midline and are often referred to as the median Palatine suture
The largest of three openings located in the posterior region of the hard palate
Largest of the branches of the external carotid artery; supplies facial structure
Resist rotational forces and hold teeth in inter-proximal contact

12. Ala of the Nose
Assist in the movement and functioning of the tongue
Platysma - trapezius - sternocleidomastoid
The outer edge of the nostril
Allow flexibility during mastication - speech

13. Fossa
Located on the inside of the body of the ramus
Maxillary first molar
Drains the maxiallary artery and superficial temporal arteries
Rounded depression on a tooth

14. Contour Lines of Owen
Circle and tighten the gingival margin around the neck of the tooth
Demonstrates a disturbance in the body metabolism
Duct located on the parotid papilla
A flap of tissue on the on the buccal mucosa

15. Dentinal Hypersensitivity
Oval structures that are located on the dorsal surface of the tongue
Middle line of the teeth
Trigeminal nerve--because it ennervates the maxilla and the mandible
When the dentin is exposed

16. Uvula
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
A projection that extends off the back of the soft palate
Three bulges on the incisal edge
A horseshoe shaped groove that follow the curve of the dental arch

17. Function of Hyoglossus
Incremental lines around the layers of the enamel matrix
Divides the crown and the root
Depresses the tongue
Extreme variations from the norm

18. Dental Arteries
Depresses the tongue
Supplies blood to the roots and periodontal ligaments of the molars and premolars
A shallow v-shaped depression located below the bottom of the nose and above the lips
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

19. Saliva
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Used to pulverize food
Clear fluid secreted by the salivary and mucous glands throughout the mouth
32

20. Facial development
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Resists intrusive forces that try to push the tooth inwards
4th week
The layer of dentin that surrounds the pulp

21. Cuspid
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Drains the maxiallary artery and superficial temporal arteries
Third tooth from the midline
Mucosa that covers the alveolar bone

22. How many roots/ cusps does the mandibular first molar have?
Bifurcated/ 5 cusps
Secrete saliva to assist in process of digestion
Three bulges on the incisal edge
Indented

23. Deep Facial Veins
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
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Teeth after cuspids

24. Interdental Gingiva
Found only in multi-rooted teeth and resists rotational forces
An extension of an unattached gingiva and the tooth
Surface towards the midline
To lubricate the oral cavity and to moisten food

25. Cortical Bone
Portion of the lips where the skin meets the vermilion zone
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
Compact bone plate of the facial and lingual surfaces
Scroll like bones outside the nasal cavaties

26. Gingiva
Bi-cuspids
A dense tissue covered with mucous membrane that can withstand chewing
Two weeks thru 8th week
Extreme variations from the norm

27. Pulpitis
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
When the tissue becomes inflamed
The teeth located at the back of the mouth
Slight ridges on the cervical third of certain teeth that extend mesiodistally

28. Mental Artery
Buccal - lingual - and inferior alveolar
When the tissue becomes inflamed
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Curve outward

29. Soft Palate
Initiation of the tooth begins
Covers muscle tissue in the posterior portion of the palate
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Synovial fluid

30. Tendon
Band of fibrous tissue which attaches muscle to bone
4 cusps/ bifurcated
Lining covers inside of the oral cavity
Set of arches found farther in the back of the throat

31. Tubercle of the Lip
A small projection in the middle of the upper lip
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Draws down the mandible and corners of the mouth
Orbicularis oris - buccinator - mentalis - zygomatic major

32. Function of Styloglossus
Hinge motion and gliding movement
Inside surface Which is towards the tongue - on anterior teeth
Drains the floor of the mouth
Retracts the tongue and raises the tip of the tongue

33. Contact Area
To bulge of curve outward
Branches off the inferior alveolar artery before intering the mandibular canal
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Where the proximal sides of two teeth come together and touch

34. Labial Mucosa
The inner surface of the lips
Formed by the fibroblast cells and secures the tooth in the socket
Third tooth from the midline
An extension of an unattached gingiva and the tooth

35. Pulp Stones
Narrow long enamel tuft
Calcified masses of dentin
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Smaller branch that ennervates the soft palate uvula and tonsils

36. Primary palate
Developmental segment of a tooth
What divides the tongue in half and runs from the base to the tip of the tongue
Platysma - trapezius - sternocleidomastoid
Separates the developing oral cavities from the nasal cavities

37. Cyto differentiation
Permeante teeth replace the primary teeth
The development of different cells
The teeth located at the back of the mouth
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

38. Embryo
Biting edge of the teeth
Buccal - lingual - and inferior alveolar
Enamel forming cells
Two weeks thru 8th week

39. Horizontal Fiber Group
Extends from the mucogingival junction to the gingival groove
To bulge of curve outward
The line of demarcation between the attached gingiva and the marginal gingiva
Functions the same as the alveolar cfg; originate in alveolar bone

40. Nasolacrimal groove
Quarters of the teeth
Extends from the medial corner of the eye to the nasal cavity
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Resulting from an imperfect union where the lobes come together

41. Lingual Veins
Opening for the ear
Drains the maxiallary artery and superficial temporal arteries
Two vertical extensions of the mandible
Bluish veins that run the length of the tongue

42. Convex
Bicuspids
To bulge of curve outward
Middle two teeth in the mouth
Outside surface Which is towards the lips

43. How many cusps/ roots do the 2/3rd maxillary molars have?
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
Surface towards the midline
Excess bone formations under the tongue on the alvellar bone
Three cusps/ trifurcated

44. Gingival Hyperplasia
Three bulges on the incisal edge
Lining covers inside of the oral cavity
An overgrowth of the gingival tissue
Shed from the oral cavity

45. Nasal-Labial Groove
A pocket formed by the soft tissue of cheeks and gingiva
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Platysma - trapezius - sternocleidomastoid
A faint line going from the ala of the nose to the corner of the mouth

46. Epithelial Attachment
The gingiva in the floor of the gingival sulcus that attaches to the enamel
An enclosed area that matures into dentin - cementum and pulp
Scroll like bones outside the nasal cavaties
Resist rotational forces and hold teeth in inter-proximal contact

47. Sublingual Caruncles
Separation of the upper lip ( 1 of 1000 live births)
2 small raised folds of tissue where the lingual frenum attaches
Incremental line indicating trauma of birth
Resists intrusive forces that try to push the tooth inwards

48. Inferior Nasal Conchae
Middle line of the teeth
Divides the crown and the root
Band of fibrous tissue which attaches muscle to bone
Scroll like bones outside the nasal cavaties

49. Ectoderm
Follows the inside of the ramus and the body of the mandible
6 years old
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Stained growth rings in dentin

50. Pterygoid plexus of the veins
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
A small projection in the middle of the upper lip
A junction or center of veins that directly or indirectly drain a vast area
Inner portion of the enamel rod