Test your basic knowledge |

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. Mesoderm
The cornerstone of the mouth
Elevates the posterior portion of the tongue and narrows the fauces
Forms into dentin - cementum and pulp of the teeth
H20 - mucin - organic salts and digestive enzymes

2. Muscle origine
Aid in attaching the gingiva to the alveolar bone
The largest of the salivary glands which lie just below and in front of the ear
Place where the groove comes together or fissures cross
The fixed attachment of a muscle

3. Lingual Nerve Branch
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Bi-cuspids
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
To lubricate the oral cavity and to moisten food

4. Imbritation Lines of Von Eboner
Where the ectoderm layer matures into the enamel
Divides the crown and the root
Stained growth rings in dentin
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

5. Periodontal Ligaments
20
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Formed by the fibroblast cells and secures the tooth in the socket
Separates the developing oral cavities from the nasal cavities

6. Incisive Nerve branch
Inside of the maxillary teeth
Intervating the anterior teeth and the labial gingiva
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Shaping the tongue during speech - mastication and swallowing

7. Middle Superior Alveolar Nerve
A dense tissue covered with mucous membrane that can withstand chewing
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Looking at the border of the tongue
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

8. What are the four major muscles of facial expression
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Tissue fluid surrounding the cell membrane of the odontoblast
Orbicularis oris - buccinator - mentalis - zygomatic major
Cells From which connective tissue evolve

9. Alveolus
4/5 cusps/ 3 roots
Natural teeth in position
Function to resist rotational forces and tilting
Bone that surrounds the root of the tooth

10. Cleft Uvula
Portion of the lips where the skin meets the vermilion zone
The corners of the mouth where the top and bottom lip meet
The line of demarcation between the attached gingiva and the marginal gingiva
Mildest form of cleft palate

11. Palatine Bones
The layer of dentin that surrounds the pulp
Band of fibrous tissue which attaches muscle to bone
Joined at the midline and are often referred to as the median Palatine suture
Full deep rich sound in nasal cavity

12. Peritubular Dentin
Creates the wall of the dentinal tubule
Primitive mouth
Excess bone in the middle of the palate
The mandibular molars

13. Stippled
Mildest form of cleft palate
Healthy gingival tissue with an orange texture
Resists intrusive forces that try to push the tooth inwards
Supplies blood to the roots and periodontal ligaments of the molars and premolars

14. Styloid Process
The disc becomes displaced
Teeth will not erupt in proper position
Sharp projection on the under surface of the temporal bone
Small grooves noted on some teeth

15. Circumpulpal Dentin
Slight ridges on the cervical third of certain teeth that extend mesiodistally
A faint line going from the ala of the nose to the corner of the mouth
A horseshoe shaped groove that follow the curve of the dental arch
The layer of dentin that surrounds the pulp

16. Primary Dentin
Raised vertical folds of tissue on the lateral border of the tongue
Forms the bulk of the tooth
Maxillary first molar
20

17. What are the two ways the TMJs move?
Hinge motion and gliding movement
Oval structures that are located on the dorsal surface of the tongue
Follows the inside of the ramus and the body of the mandible
Where the ramus meets the body of the mandible on the outside border

18. What is the latin word for molar?
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Cells that form cementum
Molaris meaning millstone

19. What are the 4 pairs of muscles of mastication!
The inner surface of the lips
Inside of the maxillary teeth
Pointed or rounded mounds on the crown of the tooth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

20. Inferior Alveolar Artery
Peg shaped crown with a smooth surface
Forms after the completion of the apical foramen
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
What divides the tongue in half and runs from the base to the tip of the tongue

21. Function of Platysma
Outside surface Which is towards the cheek - on posterior teeth
Excess bone formations under the tongue on the alvellar bone
Draws down the mandible and corners of the mouth
The study of the microscopic structure and functions of tissues

22. Gestational period
Forms a large cavity above the roots of the maxillary molars
Teeth will not erupt in proper position
Digstric - Mylohyoid - stylohyoid - geniohyoid
9 months (5 months ultrasound to tell sex)

23. Odontal Fiber Groups
9 months (5 months ultrasound to tell sex)
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
Used to pulverize food
Allow flexibility during mastication - speech

24. Nasal-Labial Groove
Orbicularis oris - buccinator - mentalis - zygomatic major
Extends from the medial corner of the eye to the nasal cavity
A faint line going from the ala of the nose to the corner of the mouth
Surface away from the midline

25. Function of Hyoglossus
A projection that extends off the back of the soft palate
Stained growth rings in dentin
Located behind the ramus of the mandible and branches into five arteries
Depresses the tongue

26. Fissure
Resulting from an imperfect union where the lobes come together
Supplies blood to the roots and periodontal ligaments of the interior teeth
Bicuspids
Small bony projections surrounding the lingual foramen

27. Labial-Mental Groove
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Inner portion of the enamel rod
The bone that separates the root on a tooth
The groove below the lower lips that separates the lips from the chin

28. Dental Sac
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
Triferacated
An enclosed area that matures into dentin - cementum and pulp
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

29. If a patient receives toxic agents - how long does it take for their sense of taste to return?
10 days
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Conception thru the first two weeks
Supplies blood to the brain and the eyes

30. Hyoid Bone
Draws the hyoid bone superiorly and posteriorly and stabilizes it
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
Located behind the ramus of the mandible and branches into five arteries
The tip of the chin

31. Secondary Dentin
Shed from the oral cavity
Forms after the completion of the apical foramen
Function to resist rotational forces and tilting
Small linear depression

32. Histology
The largest of three openings located in the posterior region of the hard palate
The study of the microscopic structure and functions of tissues
Drains the Pterygoid plexus of the veins
Shed from the oral cavity

33. What is origin and What is insertion?
Origin - fixed point - insertion - movable point
An extension of an unattached gingiva and the tooth
Oval structures that are located on the dorsal surface of the tongue
The layer of dentin that surrounds the pulp

34. Pulp horns
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
Pointed elongations of the pulp
The area on the crown of the tooth that is nearest the gingival
Mildest form of cleft palate

35. Intercellular Substances
A period of both primary teeth and permeant teeth are in the dentition
Substances between cells
The deepest point of the vestibule
Cluster of tissue that manufactures and secrets fluid

36. Calcification
Respiratory system - digestive system and glandular organs
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Layers of tooth tissue become calcified
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

37. Maxillary vein
Located in a depressed area between the pillars
The area on the crown of the tooth that is nearest the gingival
Drains the Pterygoid plexus of the veins
Small head - low nasal bridge - thin upper lip - small mandible

38. Supplemental Groove
Radiates from the developmental groove
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Cut - tear - and grind food
A dense tissue covered with mucous membrane that can withstand chewing

39. Peg lateral
Peg shaped crown with a smooth surface
Opening for the ear
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

40. Gingival Hyperplasia
Lining covers inside of the oral cavity
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Extreme variations from the norm
An overgrowth of the gingival tissue

41. Labial Commissures
Corners of the mouth
Sharp projection on the under surface of the temporal bone
The disc becomes displaced
A line of tissue that extends from the tongue to the floor of the mouth

42. What are the two muscles of the soft palate?
Peg shaped crown with a smooth surface
A pocket formed by the soft tissue of cheeks and gingiva
Forms after the completion of the apical foramen
Palatoglossus - palatopharyngeal

43. Sphenoid
The layer of dentin that surrounds the pulp
A line of demarcation between the attached gingiva and alveolar mucosa
A bat shaped bone which forms the anterior portion of the skull
Ligaments and muscles of mastication

44. Torus
When the tissue becomes inflamed
The connective tissue of the marginal gingiva
Excess bone in the middle of the palate
Pulverizing or chewing surface

45. What are the three muscles of the neck?
Cells From which connective tissue evolve
Layers of tooth tissue become calcified
Constricts the nasopharyngeal passage and elevates the larynx
Platysma - trapezius - sternocleidomastoid

46. Genial Tubercles
Small bony projections surrounding the lingual foramen
Largest facial bone with two sections joined at the median suture
Cluster of tissue that manufactures and secrets fluid
The internal surface at the center of the mandible

47. What is the longest tooth in the mandibular arch?
The mandibular first premolar
The space between the unattached gingiva and the tooth
Cut - tear - and grind food
Found near the cementoenamel junction

48. Common Carotid
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Arteries supplying blood to most of the head and the neck
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Secrete saliva to assist in process of digestion

49. Maxillary Sinus
Portion of the lips where the skin meets the vermilion zone
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Forms a large cavity above the roots of the maxillary molars
Middle line of the teeth

50. Marginal Ridges
The teeth located at the back of the mouth
Elevated are of enamel that forms the Mesial and distal borders
Peg shaped crown with a smooth surface
A raised area of tissue laying behind the maxillary central incisors on the hard palate