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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. Pterygoid plexus of the veins
Located in a depressed area between the pillars
Layers of tooth tissue become calcified
Bifurcated/ 5 cusps
A junction or center of veins that directly or indirectly drain a vast area

2. Morpho differentiation
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Mastication - aids in speech - influence facial structure - chewing surfaces
Canal or passage for fluid
The development of different forms

3. Pterygoid Artery
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Place where the groove comes together or fissures cross
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Platysma - trapezius - sternocleidomastoid

4. What is another name for premolars?
Papillae that give the tongue the strawberry effect
Bi-cuspids
Study of the structure and form of the teeth
Forms a large cavity above the roots of the maxillary molars

5. Central Incisor
Mucosa that covers the alveolar bone
Growth from the oral epithelium that gives rise to the tooth buds
Middle two teeth in the mouth
Folds of tissue to the the lingual veins

6. Alveolar Crest Fiber Group
Function to resist rotational forces and tilting
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Three bulges on the incisal edge
Inside of the maxillary teeth

7. Nasal-Labial Groove
Teeth after cuspids
Pointed or rounded mounds on the crown of the tooth
A faint line going from the ala of the nose to the corner of the mouth
Largest facial bone with two sections joined at the median suture

8. Bud stage
Initiation of the tooth begins
Sharp projection on the under surface of the temporal bone
Forms the remaining 2/3 of the hard and soft palate uvula
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

9. Groove
9 weeks thru birth
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Mastication - aids in speech - influence facial structure - chewing surfaces
Small linear depression

10. Lingual Veins
Supplies blood to the roots and periodontal ligaments of the molars and premolars
The moveable attachment of the muscle
Bluish veins that run the length of the tongue
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar

11. Eruption
Tooth emerges from gum tissue and becomes visible
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Formed by the uniting of lobes during development of crown
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

12. What are the four major muscles of facial expression
Orbicularis oris - buccinator - mentalis - zygomatic major
Triferacated
Small yellowish glands on the labial mucosa
Forms after the completion of the apical foramen

13. If a patient receives toxic agents - how long does it take for their sense of taste to return?
Surface away from the midline
The disc becomes displaced
10 days
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

14. Buckle groove
Bicuspids
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
What divides the tongue in half and runs from the base to the tip of the tongue
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

15. Stenson's Duct
Pointed elongations of the pulp
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Duct located on the parotid papilla
Two weeks thru 8th week

16. Triangular Ridge
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Pulverizing or chewing surface
Bifurcated/ 5 cusps

17. Interdental Septum
Opening in the mouth below the orbit on the maxillary bone
Primary and permanent
A bony projection that separates each socket
Occlusal surface of the posterior tooth

18. Uvula
A projection that extends off the back of the soft palate
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Forms a large cavity above the roots of the maxillary molars
Forms into dentin - cementum and pulp of the teeth

19. Fibroblasts
An enclosed area that matures into dentin - cementum and pulp
Cells From which connective tissue evolve
Aid in attaching the gingiva to the alveolar bone
Resist rotational forces and hold teeth in inter-proximal contact

20. Rod Core
Band of fibrous tissue which attaches bone to bone
Inner portion of the enamel rod
Composed of mucosa and surrounds the necks of the teeth
Molars

21. Incisive Arteries
Outside surface Which is towards the cheek - on posterior teeth
The space between the unattached gingiva and the tooth
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Supplies blood to the roots and periodontal ligaments of the interior teeth

22. Oblique Fiber Group
The space between the unattached gingiva and the tooth
Three cusps/ trifurcated
Resists intrusive forces that try to push the tooth inwards
When cells rapidly increase in number

23. Taste Buds
Initiation of the tooth begins
Oval structures that are located on the dorsal surface of the tongue
A condition where the lower frenum attachment is very short/DDS/frenectomy
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

24. Sulingual Folds
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Molaris meaning millstone
Mucosa that covers the alveolar bone
An extension of an unattached gingiva and the tooth

25. What are the two ways the TMJs move?
Hinge motion and gliding movement
The mandibular first premolar
Teeth after cuspids
Fleshy elevation under the tongue

26. Develop Mental Groove
Formed by the uniting of lobes during development of crown
Divides the crown and the root
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

27. Foliate Papillae
Located in a depressed area between the pillars
Raised vertical folds of tissue on the lateral border of the tongue
Forms into dentin - cementum and pulp of the teeth
Where the ectoderm layer matures into the enamel

28. Hypercementosis
Origin - fixed point - insertion - movable point
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Smaller branch that ennervates the soft palate uvula and tonsils
Causes a thickening of the cementum around the apex

29. Mandible Arch
Lower arch of the teeth
Bicuspids
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Elevates the posterior portion of the tongue and narrows the fauces

30. Middle Superior Alveolar Nerve
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
The teeth located at the back of the mouth
Dividing point of a multi-rooted tooth
Occlusal surface of the posterior tooth

31. Attrition
Cells that form dentin
Trigeminal - facial - glossopharyngeal - hypoglossal
Calcium salts are deposited into formed tooth
Wearing away of the incisal or occlusal surfaces of the tooth

32. Maxillary Nerve Branch
The development of different tissues
Sharp projection on the under surface of the temporal bone
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Opening in the mouth below the orbit on the maxillary bone

33. Mucogingival Junction
A line of demarcation between the attached gingiva and alveolar mucosa
Depresses the tongue
Tissue covering the alveolar processes
Duct located on the parotid papilla

34. Inferior Nasal Conchae
Permeante teeth replace the primary teeth
An enclosed area that matures into dentin - cementum and pulp
Scroll like bones outside the nasal cavaties
Follows the inside of the ramus and the body of the mandible

35. Peg lateral
Opening for the ear
The line of demarcation between the attached gingiva and the marginal gingiva
Excess bone in the middle of the palate
Peg shaped crown with a smooth surface

36. Transverse Ridge
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

37. Tome's process
Responsible for laying down the enamel matrix into place
Assist in depressing the mandible and elevating the tongue
Drains the floor of the mouth
Permeante teeth replace the primary teeth

38. Facial Vein
Drains the facial structures beginning near the eye and descending toward the mandible
Small linear depression
Mildest form of cleft palate
The slightly raised line extending down the middle of the hard palate

39. Gums
Growth from the oral epithelium that gives rise to the tooth buds
Excess bone formations under the tongue on the alvellar bone
Tissue covering the alveolar processes
Act to maintain the gingival integrity of the marginal gingiva

40. Stensens' Duct (aka Parotid)

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41. Anomalies
Full deep rich sound in nasal cavity
Extreme variations from the norm
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
A line of tissue that extends from the tongue to the floor of the mouth

42. Genial Tubercles
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
Small bony projections surrounding the lingual foramen
Drains the superficial veins of the face and neck into the subclavian vein
Circle and tighten the gingival margin around the neck of the tooth

43. Function of Digastric
Set of arches found farther in the back of the throat
Largest of the branches of the external carotid artery; supplies facial structure
Lift the hyoid bone and assist in opening the mouth
Palatoglossus - palatopharyngeal

44. Alveolar Crest
The disc becomes displaced
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Bifurcated/ 5 cusps
Two cortical bone plates that come together between each tooth

45. Which molar contains the cusp of Caribelli?
Molaris meaning millstone
Upper arch of the teeth
Maxillary first molar
Where the ectoderm layer matures into the enamel

46. Salivary Glands
Secrete saliva to assist in process of digestion
Platysma - trapezius - sternocleidomastoid
Retracts or depresses the tongue
12 years

47. Cervical Third
Cluster of tissue that manufactures and secrets fluid
Indented
32
The area on the crown of the tooth that is nearest the gingival

48. Interradical Fiber Group
Found only in multi-rooted teeth and resists rotational forces
Cluster of tissue that manufactures and secrets fluid
Mildest form of cleft palate
Secrete saliva to assist in process of digestion

49. Circumpulpal Dentin
The layer of dentin that surrounds the pulp
Primitive mouth
Week 12
Formed by the uniting of lobes during development of crown

50. Concave
Indented
Largest facial bone with two sections joined at the median suture
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
When the tissue becomes inflamed