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Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
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. Embrasure
Drains the floor of the mouth
Conception thru the first two weeks
Triangular space in the gingival direction when two adjacent teeth are in contact
The deepest point of the vestibule

2. Parotid glands
The largest of the salivary glands which lie just below and in front of the ear
Supportive fibers that anchor the tooth to the bone
Week 11
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct

3. Mantle Dentin
Lower arch of the teeth
Genioglossus - hyoglossus - styloglossus - palatoglossus
The first predentin that is formed and matures within the tube
Opening in the mouth below the orbit on the maxillary bone

4. Vermilion Zone
Acts as anchors between the alveolar bone and the tooth
Canal or passage for fluid
Portion of the lips that are red
Largest facial bone with two sections joined at the median suture

5. Hypercementosis
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Forms the remaining 2/3 of the hard and soft palate uvula
Causes a thickening of the cementum around the apex
Draws the hyoid bone superiorly and posteriorly and stabilizes it

6. Buckle groove
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Band of fibrous tissue which attaches bone to bone
Creates the wall of the dentinal tubule
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

7. Eruption
Cells that form cementum
Supportive fibers that anchor the tooth to the bone
Tooth emerges from gum tissue and becomes visible
Joined at the midline and are often referred to as the median Palatine suture

8. Common Carotid
Arteries supplying blood to most of the head and the neck
The internal surface at the center of the mandible
Responsible for laying down the enamel matrix into place
Third tooth from the midline

9. Anterior Alveolar Nerve
Draws down the mandible and corners of the mouth
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Resists forces that try to pull the tooth outward
A triangular area located behind the last molar

10. What are the 3 branches of the pterygopalatine nerve branch?
Opening in the mouth below the orbit on the maxillary bone
Elevates the posterior portion of the tongue and narrows the fauces
Linear elevation of the tooth
Greater - lesser - naso palatine nerves

11. Greater Palatine Nerve
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Cheek bones--the most breakable bone in the body
Sharp projection on the under surface of the temporal bone
Elevated are of enamel that forms the Mesial and distal borders

12. Primary palate
Oval depression of temporal bone in condyloid process
Separates the developing oral cavities from the nasal cavities
Small raised projections where taste buds are located
The development of different cells

13. How many cusps/ roots do the 2/3rd maxillary molars have?
Three cusps/ trifurcated
Outside surface Which is towards the lips
Quarters of the teeth
The smallest of the salivary glands located on the floor of the mouth which empty into the mouth thru either the ducts of Rivinus or Bartholin

14. When do the primary teeth begin erupting and are fully erupted?
Where the proximal sides of two teeth come together and touch
Supplies blood to the roots and periodontal ligaments of the molars and premolars
The disc becomes displaced
6 months/3years

15. Dental Lamina
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
A condition where the lower frenum attachment is very short/DDS/frenectomy
The largest of three openings located in the posterior region of the hard palate
Growth from the oral epithelium that gives rise to the tooth buds

16. Deep Facial Veins
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Composed of mucosa and surrounds the necks of the teeth
Branches off the inferior alveolar artery before intering the mandibular canal
An enclosed area that matures into dentin - cementum and pulp

17. Secondary palate
2 to 3 pints
Forms the remaining 2/3 of the hard and soft palate uvula
Resulting from an imperfect union where the lobes come together
The smallest of the salivary glands located on the floor of the mouth which empty into the mouth thru either the ducts of Rivinus or Bartholin

18. Nasolacrimal groove
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Extends from the medial corner of the eye to the nasal cavity
Bony projection found on the bottom border of the temporal bone
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. Genial Tubercles
Tissue covering the alveolar processes
Small bony projections surrounding the lingual foramen
The development of different cells
Two cortical bone plates that come together between each tooth

20. Cuspid
Mastication - aids in speech - influence facial structure - chewing surfaces
Third tooth from the midline
The portion of the tooth that meets the gingiva
Pulverizing or chewing surface

21. Agenesis
Occurs in unusual ways and distorted crowns may appear
Interdental ligament
Occlusal surface of the posterior tooth
Pulls the hyoid bone and the tongue anteriorly

22. Mesial
Enamel forming cells
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Rounded depression on a tooth
Surface towards the midline

23. Rami
Two vertical extensions of the mandible
The deepest point of the vestibule
Cluster of tissue that manufactures and secrets fluid
Cells that form dentin

24. Histo Differentiation
Genioglossus - hyoglossus - styloglossus - palatoglossus
Biting edge of the teeth
To dissolve
Cells develop into different tissues

25. Hard Palate
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Joined at the midline and are often referred to as the median Palatine suture
Band of fibrous tissue which attaches bone to bone
Rounded depression on a tooth

26. Enamel Lamellae
The study of the microscopic structure and functions of tissues
Mastication - aids in speech - influence facial structure - chewing surfaces
The line of demarcation between the attached gingiva and the marginal gingiva
Narrow long enamel tuft

27. Mesoderm
Bi-cuspids
Retracts or depresses the tongue
Forms into dentin - cementum and pulp of the teeth
When cells rapidly increase in number

28. Imbrication lines
Biting edge of the teeth
Pulverizing or chewing surface
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Inside of the maxillary teeth

29. Enamel Tufts
Primitive mouth
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Resists forces that try to pull the tooth outward
Small dark brushes

30. Function of Hyoglossus
A dense tissue covered with mucous membrane that can withstand chewing
10 days
Depresses the tongue
Conception thru the first two weeks

31. What is the smallest tooth in dentition?
Calcium salts are deposited into formed tooth
Trigeminal nerve--because it ennervates the maxilla and the mandible
Mandibular central incisors
Cluster of tissue that manufactures and secrets fluid

32. Internal Carotid Artery
Located behind the ramus of the mandible and branches into five arteries
Supplies blood to the brain and the eyes
Formed by the uniting of lobes during development of crown
Inside of the maxillary teeth

33. Mandible Arch
Second teeth next to central incisors
Lower arch of the teeth
Small dark brushes
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

34. Marginal Ridges
Elevated are of enamel that forms the Mesial and distal borders
Incremental lines around the layers of the enamel matrix
Incremental line indicating trauma of birth
Outside surface Which is towards the cheek - on posterior teeth

35. What are the largest and strongest of the mandibular teeth
Excess bone in the middle of the palate
The mandibular molars
Orbicularis oris - buccinator - mentalis - zygomatic major
Quarters of the teeth

36. Cingulum
Convex area on the lingual surface near gingiva
H20 - mucin - organic salts and digestive enzymes
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Found near the cementoenamel junction

37. What are the 4 pairs of muscles of mastication!
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
The outer edge of the nostril
Initiation of the tooth begins
Calcified masses of dentin

38. Function of Digastric
The fixed attachment of a muscle
Inner portion of the enamel rod
Lift the hyoid bone and assist in opening the mouth
Supplies blood to the roots and periodontal ligaments of the molars and premolars

39. Lesser Palatine Nerve
Smaller branch that ennervates the soft palate uvula and tonsils
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
The largest of three openings located in the posterior region of the hard palate
Supplies blood to the face and oral cavity

40. Retromolar Area
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Excess dryness of the mouth
A triangular area located behind the last molar
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

41. Submandibular Glands

42. Function of mylohyoid
Assist in depressing the mandible and elevating the tongue
Genioglossus - hyoglossus - styloglossus - palatoglossus
Respiratory system - digestive system and glandular organs
Circle and tighten the gingival margin around the neck of the tooth

43. Maxillary Artery
Largest of the branches of the external carotid artery; supplies facial structure
The development of different tissues
Small yellowish glands on the labial mucosa
To lubricate the oral cavity and to moisten food

44. Cleft Lip
Separation of the upper lip ( 1 of 1000 live births)
Joined at the midline and are often referred to as the median Palatine suture
10 days
The outer edge of the nostril

45. Facial Vein
Drains the facial structures beginning near the eye and descending toward the mandible
The bone that separates the root on a tooth
Composed of mucosa and surrounds the necks of the teeth
The fixed attachment of a muscle

46. What are the 4 extrinsic muscles of the tongue
Cells that form dentin
Assist in the movement and functioning of the tongue
When cells rapidly increase in number
Genioglossus - hyoglossus - styloglossus - palatoglossus

47. Fetus
Greater - lesser - naso palatine nerves
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Circle and tighten the gingival margin around the neck of the tooth
9 weeks thru birth

48. Transverse Ridge
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Located on the inside of the body of the ramus
Interdental ligament
Three cusps/ trifurcated

49. Mastication
To bulge of curve outward
2 small raised folds of tissue where the lingual frenum attaches
Chewing and swallowing food
Separates the developing oral cavities from the nasal cavities

50. Inferior Nasal Conchae
Inside surface Which is towards the tongue - on anterior teeth
6 months/3years
Scroll like bones outside the nasal cavaties
Folds of tissue that extend horizontally from the uvula to the base of the tongue