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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. Buccal Mucosa
The inner surface of the cheeks
Follows the inside of the ramus and the body of the mandible
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
When the tissue becomes inflamed

2. Xygomatic bones
Cheek bones--the most breakable bone in the body
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Assist in the movement and functioning of the tongue
Incremental line indicating trauma of birth

3. What are the 12 landmarks of the oral cavity?

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4. Mandible Arch
Drains the facial structures beginning near the eye and descending toward the mandible
Responsible for laying down the enamel matrix into place
Lower arch of the teeth
Small grooves noted on some teeth

5. Morphology
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Study of the structure and form of the teeth
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

6. Embrasure
Triangular space in the gingival direction when two adjacent teeth are in contact
Middle line of the teeth
Rounded depression on a tooth
Surface towards the midline

7. What are the eight landmarks of the face?
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Study of prenatal growth and the developing process of an individual
Forms the remaining 2/3 of the hard and soft palate uvula
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

8. Ala of the Nose
The ridges that run horizontally across the hard palate behind the incisive papilla
Mastication - aids in speech - influence facial structure - chewing surfaces
The outer edge of the nostril
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

9. Landmarks
2 small raised folds of tissue where the lingual frenum attaches
9 weeks thru birth
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Place where the groove comes together or fissures cross

10. Dentogingival Fiber Groups
Convex area on the lingual surface near gingiva
Formed by the fibroblast cells and secures the tooth in the socket
Small linear depression
Act to maintain the gingival integrity of the marginal gingiva

11. Central Incisor
Cells From which connective tissue evolve
Forms a large cavity above the roots of the maxillary molars
Middle two teeth in the mouth
A rounded area beyond the last posterior maxillary tooth

12. Lingual Frenum
A line of tissue that extends from the tongue to the floor of the mouth
The internal surface at the center of the mandible
Elevates the posterior portion of the tongue and narrows the fauces
Layers of tooth tissue become calcified

13. Paranasal
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Short tubules that seem to crossover to the enamel
Extends from the medial corner of the eye to the nasal cavity
Of or pertaining to area surrounding naval cavity

14. Alveologingival Fiber Groups
Triferacated
Trigeminal - facial - glossopharyngeal - hypoglossal
Pulverizing or chewing surface
Aid in attaching the gingiva to the alveolar bone

15. Fordyce's Spots
A faint line going from the ala of the nose to the corner of the mouth
Small yellowish glands on the labial mucosa
Rounded depression on a tooth
Small grooves noted on some teeth

16. Enamel Lamellae
Narrow long enamel tuft
Largest facial bone with two sections joined at the median suture
Excess dryness of the mouth
Formed by the uniting of lobes during development of crown

17. Palatine Bones
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Joined at the midline and are often referred to as the median Palatine suture
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Pulverizing or chewing surface

18. Groove
A period of both primary teeth and permeant teeth are in the dentition
Small linear depression
H20 - mucin - organic salts and digestive enzymes
Assist in depressing the mandible and elevating the tongue

19. Anterior Tonsillar Pillar
32
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Folds of tissue that extend horizontally from the uvula to the base of the tongue
A flap of tissue on the on the buccal mucosa

20. How many cusps/ roots do the maxillary first molars have?
The study of the microscopic structure and functions of tissues
Primitive mouth
A small projection in the middle of the upper lip
4/5 cusps/ 3 roots

21. Gingival Hyperplasia
When the tissue becomes inflamed
An overgrowth of the gingival tissue
9 weeks thru birth
Bluish veins that run the length of the tongue

22. Anatomical root
Two cortical bone plates that come together between each tooth
Cells develop into different tissues
Demonstrates a disturbance in the body metabolism
Portion covered with cementum

23. Nasal-Labial Groove
A faint line going from the ala of the nose to the corner of the mouth
Assist in the movement and functioning of the tongue
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
The crown of the tooth that is nearest the incisal edge near the anterior tooth

24. Primary palate
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
10 days
Separates the developing oral cavities from the nasal cavities
Platysma - trapezius - sternocleidomastoid

25. Succedaneous teeth
Synovial fluid
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Aid in attaching the gingiva to the alveolar bone
Permeante teeth replace the primary teeth

26. What is another name for premolars?
Bi-cuspids
Formed by the fibroblast cells and secures the tooth in the socket
Smaller branch that ennervates the soft palate uvula and tonsils
Function to resist rotational forces and tilting

27. Facial Vein
Portion of the root seen in the oral cavity
Developmental segment of a tooth
Drains the facial structures beginning near the eye and descending toward the mandible
Upper arch of the teeth

28. Maxillary Nerve Branch
Scroll like bones outside the nasal cavaties
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Oval structures that are located on the dorsal surface of the tongue
Cells that form cementum

29. Sulingual Folds
Two vertical extensions of the mandible
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

30. Interradical Fiber Group
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Found only in multi-rooted teeth and resists rotational forces
Indented

31. Lobes
Developmental segment of a tooth
The slightly raised line extending down the middle of the hard palate
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Located in a depressed area between the pillars

32. Saliva
Clear fluid secreted by the salivary and mucous glands throughout the mouth
A bat shaped bone which forms the anterior portion of the skull
Tissue fluid surrounding the cell membrane of the odontoblast
Inside of the maxillary teeth

33. Alveolar Crest Fiber Group
Function to resist rotational forces and tilting
The study of the microscopic structure and functions of tissues
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Biting edge of the teeth

34. Pulp Stones
Mastication - aids in speech - influence facial structure - chewing surfaces
Cut - tear - and grind food
Calcified masses of dentin
Three bulges on the incisal edge

35. Apposition
Forms the remaining 2/3 of the hard and soft palate uvula
Retracts the tongue and raises the tip of the tongue
Calcium salts are deposited into formed tooth
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

36. External Jugular Vein
Composed of mucosa and surrounds the necks of the teeth
Circle and tighten the gingival margin around the neck of the tooth
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Drains the superficial veins of the face and neck into the subclavian vein

37. Mucosa
Peg shaped crown with a smooth surface
Lining covers inside of the oral cavity
Enamel forming cells
Secrete saliva to assist in process of digestion

38. Mandibular Foramen
The largest of three openings located in the posterior region of the hard palate
Inside of the maxillary teeth
Located on the inside of the body of the ramus
A period of both primary teeth and permeant teeth are in the dentition

39. Which molar contains the cusp of Caribelli?
Maxillary first molar
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Growth from the oral epithelium that gives rise to the tooth buds
Branches off the inferior alveolar artery before intering the mandibular canal

40. Labial Commissures
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
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
Corners of the mouth
H20 - mucin - organic salts and digestive enzymes

41. How is the TMJ supported and what controls their movement?
Ligaments and muscles of mastication
A shallow v-shaped depression located below the bottom of the nose and above the lips
Draws the hyoid bone superiorly and posteriorly and stabilizes it
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface

42. Alveolar Mucosa
The teeth located at the back of the mouth
Appears to be loosely attached - covering the alveolar bone.
To bulge of curve outward
Band of fibrous tissue which attaches muscle to bone

43. What are the two ways the TMJs move?
Secrete saliva to assist in process of digestion
Hinge motion and gliding movement
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

44. Cuspid
Raised vertical folds of tissue on the lateral border of the tongue
Third tooth from the midline
Indented
A period of both primary teeth and permeant teeth are in the dentition

45. Cleft Uvula
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Resulting from an imperfect union where the lobes come together
The bone that separates the root on a tooth
Mildest form of cleft palate

46. Mixed Dentition
Molaris meaning millstone
Forming organ takes shape and resembles the shape of a bell
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
A period of both primary teeth and permeant teeth are in the dentition

47. What teeth do the deciduous (baby) tooth not include?
Genioglossus - hyoglossus - styloglossus - palatoglossus
Mucosa that covers the alveolar bone
No bicuspids/ no 3rd molars
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

48. External Carotid Artery
Supplies blood to the face and oral cavity
Study of the structure and form of the teeth
Small grooves noted on some teeth
Circle and tighten the gingival margin around the neck of the tooth

49. Rod Core
The area on the crown of the tooth that is nearest the gingival
Papillae that give the tongue the strawberry effect
Inner portion of the enamel rod
Draws down the mandible and corners of the mouth

50. Ameloblast
Causes a thickening of the cementum around the apex
Branches off the inferior alveolar artery before intering the mandibular canal
Enamel forming cells
The development of different tissues