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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. Agenesis
Occurs in unusual ways and distorted crowns may appear
Triangular space in the gingival direction when two adjacent teeth are in contact
Enamel is thinner - pulp chamber is smaller -
Extends from the medial corner of the eye to the nasal cavity

2. How many cusps/ roots do the 2/3rd mandibular molars have?
Two
4 cusps/ bifurcated
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

3. When do oral and nasal cavity separate and palate develop?
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Week 12
Drains the facial structures beginning near the eye and descending toward the mandible
A bat shaped bone which forms the anterior portion of the skull

4. Denticion
Study of prenatal growth and the developing process of an individual
Natural teeth in position
Calcium salts are deposited into formed tooth
Greater - lesser - naso palatine nerves

5. Function of Sternocleidomastoid
Dividing point of a multi-rooted tooth
Bi-cuspids
Excess bone formations under the tongue on the alvellar bone
Assists in elevating the chin

6. Mamelons
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Three bulges on the incisal edge
Study of the structure and form of the teeth
Covers muscle tissue in the posterior portion of the palate

7. Mandibular Artery
Genioglossus - hyoglossus - styloglossus - palatoglossus
Located behind the ramus of the mandible and branches into five arteries
Pointed elongations of the pulp
The internal surface at the center of the mandible

8. Primary Dentin
Elevates the posterior portion of the tongue and narrows the fauces
Greater - lesser - naso palatine nerves
Forms the bulk of the tooth
Wings of the sphenoid bone

9. Epithelial Attachment
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Layers of tooth tissue become calcified

10. Mental Artery
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Bicuspids
Convex area on the lingual surface near gingiva
Genioglossus - hyoglossus - styloglossus - palatoglossus

11. Sublingual Glands
Largest facial bone with two sections joined at the median suture
The layer of dentin that surrounds the pulp
Vertical groove on the midline of the upper lip
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

12. Histo Differentiation
Cells develop into different tissues
Week 12
Moves the head backward and laterally
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip

13. What is the maxillary cuspid known as?
Portion covered with cementum
To dissolve
The cornerstone of the mouth
Bicuspids

14. Mandible Arch
Largest facial bone with two sections joined at the median suture
Lower arch of the teeth
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Covers muscle tissue in the posterior portion of the palate

15. What are the 4 pairs of muscles of mastication!
The portion of the tooth that meets the gingiva
Supplies blood to the face and oral cavity
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Three bulges on the incisal edge

16. What are the only permeant teeth that are not succedaneous?
Small linear depression
Pointed or rounded mounds on the crown of the tooth
Molars
Elevated are of enamel that forms the Mesial and distal borders

17. Vermilion Zone
A faint line going from the ala of the nose to the corner of the mouth
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Three cusps/ trifurcated
Portion of the lips that are red

18. Labial-Mental Groove
(free gingiva) surrounds the teeth
A bony projection that separates each socket
Primary embryonic mesoderm layer that develops during the morpho differentiation period
The groove below the lower lips that separates the lips from the chin

19. What are the largest and strongest of the mandibular teeth
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
A line of demarcation between the attached gingiva and alveolar mucosa
The mandibular molars
The fixed attachment of a muscle

20. Anterior Tonsillar Pillar
Enamel forming cells
Separates the developing oral cavities from the nasal cavities
Located in a depressed area between the pillars
Folds of tissue that extend horizontally from the uvula to the base of the tongue

21. Mylohyoid Nerve Branch
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Study of prenatal growth and the developing process of an individual
Drains the Pterygoid plexus of the veins

22. Odontal Fiber Groups
Growth from the oral epithelium that gives rise to the tooth buds
Oval structures that are located on the dorsal surface of the tongue
Pointed or rounded mounds on the crown of the tooth
Allow flexibility during mastication - speech

23. What is Ankyloglossia and who can treat it / What is the treatment called?
Quarters of the teeth
Healthy gingival tissue with an orange texture
A condition where the lower frenum attachment is very short/DDS/frenectomy
Shaping the tongue during speech - mastication and swallowing

24. Duct
The moveable attachment of the muscle
Outside surface Which is towards the cheek - on posterior teeth
Oval structures that are located on the dorsal surface of the tongue
Canal or passage for fluid

25. Labial Mucosa
Stained growth rings in dentin
Bicuspids
The inner surface of the lips
Bony projection found on the bottom border of the temporal bone

26. Palatine Bones
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Secrete saliva to assist in process of digestion
Molars
Joined at the midline and are often referred to as the median Palatine suture

27. Intertubular Dentin
Functions the same as the alveolar cfg; originate in alveolar bone
Radiates from the developmental groove
Dentin found between the tubules
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

28. Salivary Glands
Layers of tooth tissue become calcified
Secrete saliva to assist in process of digestion
Indented
Conception thru the first two weeks

29. Histo Differentation
Primitive mouth
The development of different tissues
Retracts the tongue and raises the tip of the tongue
The line of demarcation between the attached gingiva and the marginal gingiva

30. Frenum
Largest division of the trigeminal nerve
Tooth emerges from gum tissue and becomes visible
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

31. Attached Gingiva
Drains the Pterygoid plexus of the veins
Extends from the mucogingival junction to the gingival groove
The outer edge of the nostril
Enamel forming cells

32. Alveolar Crest
Forming organ takes shape and resembles the shape of a bell
Two cortical bone plates that come together between each tooth
An overgrowth of the gingival tissue
Calcified masses of dentin

33. Mucogingival Junction
A line of demarcation between the attached gingiva and alveolar mucosa
(free gingiva) surrounds the teeth
Portion of the root seen in the oral cavity
Greater - lesser - naso palatine nerves

34. Labial
Sharp projection on the under surface of the temporal bone
Outside surface Which is towards the lips
Wings of the sphenoid bone
Oval depression of temporal bone in condyloid process

35. Muscle Insertion
A horseshoe shaped bone lying at the base of the tongue--all the muscles of the tongue and the floor of the mouth attach to this bone
The moveable attachment of the muscle
Radiates from the developmental groove
An overgrowth of the gingival tissue

36. Secondary Dentin
Forms after the completion of the apical foramen
Small raised projections where taste buds are located
Dividing point of a multi-rooted tooth
Drains the facial structures beginning near the eye and descending toward the mandible

37. Pulp Stones
Calcified masses of dentin
Duct located on the parotid papilla
Composed of mucosa and surrounds the necks of the teeth
Third tooth from the midline

38. Ameloblast
Respiratory system - digestive system and glandular organs
Enamel forming cells
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Secrete saliva to assist in process of digestion

39. Circumvallate Papillae
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Follows the length of the body of the mandible past the last tooth and up to the ramus
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
32

40. Vestibule Fornix
The deepest point of the vestibule
Dentin found between the tubules
Two
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

41. Lamina Propria
The first predentin that is formed and matures within the tube
Quarters of the teeth
The connective tissue of the marginal gingiva
Resists intrusive forces that try to push the tooth inwards

42. Which molar is the wisdom tooth
Incremental line indicating trauma of birth
Maxillary third molar
Arteries supplying blood to most of the head and the neck
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

43. What is the purpose of saliva?
Forms after the completion of the apical foramen
When cells rapidly increase in number
Interdental ligament
To lubricate the oral cavity and to moisten food

44. Median Sulcus
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Drains the Pterygoid plexus of the veins
What divides the tongue in half and runs from the base to the tip of the tongue
A projection that extends off the back of the soft palate

45. Mandibular Foramen
Located on the inside of the body of the ramus
Incremental line indicating trauma of birth
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Demonstrates a disturbance in the body metabolism

46. Sphenoid
A bat shaped bone which forms the anterior portion of the skull
Largest of the branches of the external carotid artery; supplies facial structure
Inside of the maxillary teeth
Pulls the hyoid bone and the tongue anteriorly

47. How much saliva do the salivary glands produce in 24 hours?
Largest of the branches of the external carotid artery; supplies facial structure
A period of both primary teeth and permeant teeth are in the dentition
The development of different cells
2 to 3 pints

48. Gingival Groove
Study of prenatal growth and the developing process of an individual
The line of demarcation between the attached gingiva and the marginal gingiva
Cells develop into different tissues
Secrete saliva to assist in process of digestion

49. Rod Core
Located on the inside of the body of the ramus
Inner portion of the enamel rod
Function to resist rotational forces and tilting
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

50. What are the four major muscles of facial expression
Drains the superficial veins of the face and neck into the subclavian vein
Orbicularis oris - buccinator - mentalis - zygomatic major
Lift the hyoid bone and assist in opening the mouth
Clear fluid secreted by the salivary and mucous glands throughout the mouth