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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.
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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. What are the characteristics of permanent teeth?
Hinge motion and gliding movement
2 to 3 pints
Enamel is thinner - pulp chamber is smaller -
Oval structures that are located on the dorsal surface of the tongue

2. Fetus
Middle two teeth in the mouth
Triferacated
Two vertical extensions of the mandible
9 weeks thru birth

3. Function of Palatopharyngeal
Lower arch of the teeth
4th week
Constricts the nasopharyngeal passage and elevates the larynx
The area on the crown of the tooth that is nearest the gingival

4. What teeth are removed if overcrowding occurs?
Bicuspids
Developmental segment of a tooth
Resists intrusive forces that try to push the tooth inwards
Cells that form dentin

5. Xygote
The space between the unattached gingiva and the tooth
Conception thru the first two weeks
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Supplies blood to the face and oral cavity

6. Palatine Rugae
Cells develop into different tissues
The ridges that run horizontally across the hard palate behind the incisive papilla
Curve outward
The inner surface of the lips

7. What are the 4 extrinsic muscles of the tongue
Genioglossus - hyoglossus - styloglossus - palatoglossus
Natural teeth in position
Band of fibrous tissue which attaches muscle to bone
A shallow v-shaped depression located below the bottom of the nose and above the lips

8. Labial-Mental Groove
Cheek bones--the most breakable bone in the body
Molars
The groove below the lower lips that separates the lips from the chin
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

9. Free Gingiva
Week 11
Where the ramus meets the body of the mandible on the outside border
The portion of the tooth that meets the gingiva
The area on the crown of the tooth that is nearest the gingival

10. Primary palate
Separates the developing oral cavities from the nasal cavities
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
1500 millimeters
Smaller branch that ennervates the soft palate uvula and tonsils

11. Labial Commissures
Elevated are of enamel that forms the Mesial and distal borders
Enamel is thinner - pulp chamber is smaller -
(free gingiva) surrounds the teeth
The corners of the mouth where the top and bottom lip meet

12. Landmarks
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Short tubules that seem to crossover to the enamel
The slightly raised line extending down the middle of the hard palate
Found near the cementoenamel junction

13. Distal
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Surface away from the midline
Surface towards the midline

14. Which molar contains the cusp of Caribelli?
Forms after the completion of the apical foramen
Band of fibrous tissue which attaches muscle to bone
Maxillary first molar
Wearing away of the incisal or occlusal surfaces of the tooth

15. Uvula
Secrete saliva to assist in process of digestion
Tubules that pass through the entire surface of the dentin
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
A projection that extends off the back of the soft palate

16. What is the purpose of permanent teeth?
Cut - tear - and grind food
The largest of the salivary glands which lie just below and in front of the ear
Molaris meaning millstone
Forms after the completion of the apical foramen

17. Lingual Frenum
An enclosed area that matures into dentin - cementum and pulp
Two weeks thru 8th week
A line of tissue that extends from the tongue to the floor of the mouth
6 months/3years

18. Genial Tubercles
Occurs in unusual ways and distorted crowns may appear
Pointed elongations of the pulp
Small bony projections surrounding the lingual foramen
Portion of the lips where the skin meets the vermilion zone

19. What are the 4 cranial nerves that ennervate the face and oral cavity
Stained growth rings in dentin
Circle and tighten the gingival margin around the neck of the tooth
Substances between cells
Trigeminal - facial - glossopharyngeal - hypoglossal

20. Incisive Nerve branch
An overgrowth of the gingival tissue
Intervating the anterior teeth and the labial gingiva
When cells rapidly increase in number
Forms into dentin - cementum and pulp of the teeth

21. Dentinal Hypersensitivity
Forms the remaining 2/3 of the hard and soft palate uvula
Pointed elongations of the pulp
When the dentin is exposed
Tooth emerges from gum tissue and becomes visible

22. Sublingual Sulcus
Maxillary third molar
The cornerstone of the mouth
Resist rotational forces and hold teeth in inter-proximal contact
A horseshoe shaped groove that follow the curve of the dental arch

23. Triangular Ridge
Inner portion of the enamel rod
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Ligaments and muscles of mastication
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

24. Sharpey's Fibers
Small head - low nasal bridge - thin upper lip - small mandible
Acts as anchors between the alveolar bone and the tooth
Disk that acts like a cushion between the temporal bone and the condyloid process
Forms after the completion of the apical foramen

25. Lingual Vein
Teeth will not erupt in proper position
Bone that surrounds the root of the tooth
Drains the floor of the mouth
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

26. Philtrum
Vertical groove on the midline of the upper lip
Moves the head backward and laterally
Excess bone in the middle of the palate
The bone that separates the root on a tooth

27. Apical Fiber Group
Small bony projections surrounding the lingual foramen
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
Resists forces that try to pull the tooth outward
Triangular space in the gingival direction when two adjacent teeth are in contact

28. What are the largest and strongest of the mandibular teeth
Largest of the branches of the external carotid artery; supplies facial structure
Tubules that pass through the entire surface of the dentin
Two
The mandibular molars

29. Eruption
Bifurcated/ 5 cusps
Small yellowish glands on the labial mucosa
Resulting from an imperfect union where the lobes come together
Tooth emerges from gum tissue and becomes visible

30. TMJ bones are bathed In what solution?
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Forms a large cavity above the roots of the maxillary molars
Indented
Synovial fluid

31. Palatine Bones
Joined at the midline and are often referred to as the median Palatine suture
Cells that form cementum
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Elevated are of enamel that forms the Mesial and distal borders

32. Taste Buds
Oval structures that are located on the dorsal surface of the tongue
Where the proximal sides of two teeth come together and touch
Sharp projection on the under surface of the temporal bone
Two

33. What are the eight landmarks of the face?
Aid in attaching the gingiva to the alveolar bone
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
9 months (5 months ultrasound to tell sex)

34. Common Carotid
Arteries supplying blood to most of the head and the neck
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Drains the floor of the mouth
Forms into dentin - cementum and pulp of the teeth

35. Buccal
Outside surface Which is towards the cheek - on posterior teeth
The cornerstone of the mouth
Cluster of tissue that manufactures and secrets fluid
Inside surface Which is towards the tongue - on anterior teeth

36. Maxillary Nerve Branch
Trigeminal - facial - glossopharyngeal - hypoglossal
Formed by the fibroblast cells and secures the tooth in the socket
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Extends from the medial corner of the eye to the nasal cavity

37. Function of Platysma
Draws down the mandible and corners of the mouth
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Sharp projection on the under surface of the temporal bone
Small linear depression

38. Anterior Alveolar Nerve
Peg shaped crown with a smooth surface
Covers muscle tissue in the posterior portion of the palate
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

39. Rod Core
Forms into dentin - cementum and pulp of the teeth
Inner portion of the enamel rod
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Functions the same as the alveolar cfg; originate in alveolar bone

40. Cleft Palate
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Mildest form of cleft palate
An overgrowth of the gingival tissue
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface

41. External Jugular Vein
Portion of the lips that are red
Excess bone in the middle of the palate
Drains the superficial veins of the face and neck into the subclavian vein
Convex area on the lingual surface near gingiva

42. Succedaneous teeth
A raised area of tissue laying behind the maxillary central incisors on the hard palate
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Duct located on the parotid papilla
Permeante teeth replace the primary teeth

43. Vermilion Zone
Cells that form dentin
Maxillary first molar
A rounded area beyond the last posterior maxillary tooth
Portion of the lips that are red

44. Maxillary Arch
Drains the facial structures beginning near the eye and descending toward the mandible
Upper arch of the teeth
Resist rotational forces and hold teeth in inter-proximal contact
A triangular area located behind the last molar

45. What are the 4 pairs of muscles of mastication!
Bi-cuspids
Sharp projection on the under surface of the temporal bone
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
The study of the microscopic structure and functions of tissues

46. Secondary Dentin
Forms after the completion of the apical foramen
Largest of the branches of the external carotid artery; supplies facial structure
Two weeks thru 8th week
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

47. Embryology
Mucosa that covers the alveolar bone
Orbicularis oris - buccinator - mentalis - zygomatic major
Duct located on the parotid papilla
Study of prenatal growth and the developing process of an individual

48. Bud stage
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
A bat shaped bone which forms the anterior portion of the skull
Bluish veins that run the length of the tongue
Initiation of the tooth begins

49. Cervical line
Divides the crown and the root
Cluster of tissue that manufactures and secrets fluid
9 months (5 months ultrasound to tell sex)
A bony plate covered with keratinized tissue located in the anterior portion of the palate

50. Circumvallate Papillae
The corners of the mouth where the top and bottom lip meet
Forms a large cavity above the roots of the maxillary molars
Arteries supplying blood to most of the head and the neck
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10