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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. Fetal Alcohol Syndrome symptons
Follows the inside of the ramus and the body of the mandible
Covering over the enamel that is left over from the epithelium ameloblasts
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Small head - low nasal bridge - thin upper lip - small mandible

2. Triangular Ridge
Interdental ligament
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Aid in attaching the gingiva to the alveolar bone

3. Vestibule
To lubricate the oral cavity and to moisten food
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Buccal - lingual - and inferior alveolar
A pocket formed by the soft tissue of cheeks and gingiva

4. Free Gingiva
Composed of mucosa and surrounds the necks of the teeth
Folds of tissue to the the lingual veins
Fleshy elevation under the tongue
The portion of the tooth that meets the gingiva

5. What is another name for premolars?
Bi-cuspids
Bicuspids
Primitive mouth
Outside surface Which is towards the cheek - on posterior teeth

6. Lobes
Found only in multi-rooted teeth and resists rotational forces
2 to 3 pints
To lubricate the oral cavity and to moisten food
Developmental segment of a tooth

7. Mental Protuberance
Cells From which connective tissue evolve
The tip of the chin
Occurs in unusual ways and distorted crowns may appear
Pointed elongations of the pulp

8. Lingual Nerve Branch
Trigeminal nerve--because it ennervates the maxilla and the mandible
The internal surface at the center of the mandible
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
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

9. Fimbriated Folds
Retracts or depresses the tongue
Folds of tissue to the the lingual veins
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Branches off the inferior alveolar artery before intering the mandibular canal

10. Duct
Elevates the posterior portion of the tongue and narrows the fauces
Canal or passage for fluid
Resulting from an imperfect union where the lobes come together
The outer edge of the nostril

11. How many cusps/ roots do the 2/3rd maxillary molars have?
Disk that acts like a cushion between the temporal bone and the condyloid process
A junction or center of veins that directly or indirectly drain a vast area
The layer of dentin that surrounds the pulp
Three cusps/ trifurcated

12. When do the primary teeth begin erupting and are fully erupted?
Pulls the hyoid bone and the tongue anteriorly
Bifurcated/ 5 cusps
6 months/3years
Digstric - Mylohyoid - stylohyoid - geniohyoid

13. What are the 4 pairs of muscles of mastication!
A line that represents the alveolus bone lining the socket
Two cortical bone plates that come together between each tooth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip

14. Perikymata
Small grooves noted on some teeth
Supplies blood to the face and oral cavity
Largest of the branches of the external carotid artery; supplies facial structure
Used to pulverize food

15. Attrition
Calcium salts are deposited into formed tooth
Wearing away of the incisal or occlusal surfaces of the tooth
Occlusal surface of the posterior tooth
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

16. Incisive Arteries
Supplies blood to the roots and periodontal ligaments of the interior teeth
Enamel forming cells
When the dentin is exposed
Tissue fluid surrounding the cell membrane of the odontoblast

17. Glenoid Fossa
Compact bone plate of the facial and lingual surfaces
Oval depression of temporal bone in condyloid process
Fleshy elevation under the tongue
Opening for the ear

18. Stensens' Duct (aka Parotid)

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19. Buccal
Outside surface Which is towards the cheek - on posterior teeth
Secrete saliva to assist in process of digestion
Looking at the border of the tongue
Aid in attaching the gingiva to the alveolar bone

20. What are the 2 sets of teeth?
A period of both primary teeth and permeant teeth are in the dentition
Wings of the sphenoid bone
Largest of the branches of the external carotid artery; supplies facial structure
Primary and permanent

21. Vermilion Border
Surface towards the midline
Responsible for laying down the enamel matrix into place
The largest of the salivary glands which lie just below and in front of the ear
Portion of the lips where the skin meets the vermilion zone

22. Odontal Fiber Groups
Secrete saliva to assist in process of digestion
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Incremental line indicating trauma of birth
Allow flexibility during mastication - speech

23. Lamina Propria
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Oval structures that are located on the dorsal surface of the tongue
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
The connective tissue of the marginal gingiva

24. How much saliva do the salivary glands produce in 24 hours?
2 to 3 pints
Depresses the tongue
Enamel is thinner - pulp chamber is smaller -
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids

25. Dentinal Hypersensitivity
When the dentin is exposed
Supportive fibers that anchor the tooth to the bone
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Bone that surrounds the root of the tooth

26. Pterygoid Process
Mucosa that covers the alveolar bone
Functions the same as the alveolar cfg; originate in alveolar bone
Wings of the sphenoid bone
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

27. Incisive Papilla
Circle and tighten the gingival margin around the neck of the tooth
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
A raised area of tissue laying behind the maxillary central incisors on the hard palate
An enclosed area that matures into dentin - cementum and pulp

28. Lingual Veins
Bluish veins that run the length of the tongue
6 years old
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Layers of tooth tissue become calcified

29. Internal Jugular Vein
Looking at the border of the tongue
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Located on the inside of the body of the ramus
An overgrowth of the gingival tissue

30. Function of Stylohyoid
Oval structures that are located on the dorsal surface of the tongue
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Small yellowish glands on the labial mucosa

31. Mastication
The largest of three openings located in the posterior region of the hard palate
Supplies blood to the roots and periodontal ligaments of the interior teeth
Chewing and swallowing food
Rounded depression on a tooth

32. What is the maxillary cuspid known as?
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Bicuspids
Demonstrates a disturbance in the body metabolism
The cornerstone of the mouth

33. What is the purpose of saliva?
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Portion of the root seen in the oral cavity
Folds of tissue that extend horizontally from the uvula to the base of the tongue
To lubricate the oral cavity and to moisten food

34. Pulp horns
Occurs in unusual ways and distorted crowns may appear
Pointed elongations of the pulp
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Bone that surrounds the root of the tooth

35. Exfoliated
Incremental line indicating trauma of birth
Lining covers inside of the oral cavity
Surface away from the midline
Shed from the oral cavity

36. Concave
Substances between cells
Indented
Cells develop into different tissues
Scroll like bones outside the nasal cavaties

37. Linea Alba
Covers muscle tissue in the posterior portion of the palate
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Interdental ligament

38. Meniscus
Shaping the tongue during speech - mastication and swallowing
Follows the inside of the ramus and the body of the mandible
Disk that acts like a cushion between the temporal bone and the condyloid process
Third tooth from the midline

39. Periodontium
Hinge motion and gliding movement
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Molars
Trigeminal nerve--because it ennervates the maxilla and the mandible

40. If a patient receives toxic agents - how long does it take for their sense of taste to return?
Raised vertical folds of tissue on the lateral border of the tongue
The cornerstone of the mouth
10 days
6 years old

41. Function of Geneoglossus?
Where the ramus meets the body of the mandible on the outside border
Trigeminal - facial - glossopharyngeal - hypoglossal
Greater - lesser - naso palatine nerves
Retracts or depresses the tongue

42. Posterior Teeth
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Supplies blood to the face and oral cavity
Wings of the sphenoid bone
The teeth located at the back of the mouth

43. Dentoperiosteal Fiber Groups
Supportive fibers that anchor the tooth to the bone
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Aid in attaching the gingiva to the alveolar bone
Outside surface Which is towards the lips

44. Enamel Tufts
When the surface of the teeth becomes grooved
Two cortical bone plates that come together between each tooth
Small dark brushes
When the tissue becomes inflamed

45. Hard Palate
Indented
Peg shaped crown with a smooth surface
Forms a large cavity above the roots of the maxillary molars
A bony plate covered with keratinized tissue located in the anterior portion of the palate

46. What are the characteristics of deciduous teeth?
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Extreme variations from the norm
Radiates from the developmental groove
Creates the wall of the dentinal tubule

47. What are the characteristics of permanent teeth?
2 small raised folds of tissue where the lingual frenum attaches
Enamel is thinner - pulp chamber is smaller -
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
To lubricate the oral cavity and to moisten food

48. How many cusps/ roots do the 2/3rd mandibular molars have?
The groove below the lower lips that separates the lips from the chin
4 cusps/ bifurcated
Cells develop into different tissues
A bony projection that separates each socket

49. How much saliva is produced daily?
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Largest of the branches of the external carotid artery; supplies facial structure
1500 millimeters
Bi-cuspids

50. Sublingual Caruncles
Orbicularis oris - buccinator - mentalis - zygomatic major
Portion of the root seen in the oral cavity
2 small raised folds of tissue where the lingual frenum attaches
Maxillary first molar