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. Function of Geneoglossus?
Formed by the uniting of lobes during development of crown
(free gingiva) surrounds the teeth
Retracts or depresses the tongue
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

2. What are the 4 cranial nerves that ennervate the face and oral cavity
Trigeminal - facial - glossopharyngeal - hypoglossal
Found near the cementoenamel junction
Buccal - lingual - and inferior alveolar
Inner portion of the enamel rod

3. What are the four main functions of deciduous teeth?
Mastication - aids in speech - influence facial structure - chewing surfaces
Cheek bones--the most breakable bone in the body
Hinge motion and gliding movement
Triangular space in the gingival direction when two adjacent teeth are in contact

4. Common Carotid
A line of tissue that extends from the tongue to the floor of the mouth
Wearing away of the incisal or occlusal surfaces of the tooth
(free gingiva) surrounds the teeth
Arteries supplying blood to most of the head and the neck

5. Stomedeum
Pulverizing or chewing surface
Primitive mouth
The fixed attachment of a muscle
Forms a large cavity above the roots of the maxillary molars

6. Anterior Tonsillar Pillar
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Where the proximal sides of two teeth come together and touch
The study of the microscopic structure and functions of tissues
Small yellowish glands on the labial mucosa

7. When does the maxillary first molar erupt?
6 years old
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Extreme variations from the norm
Dividing point of a multi-rooted tooth

8. Nasolacrimal groove
An enclosed area that matures into dentin - cementum and pulp
The corners of the mouth where the top and bottom lip meet
Creates the wall of the dentinal tubule
Extends from the medial corner of the eye to the nasal cavity

9. Bud stage
Outside surface Which is towards the cheek - on posterior teeth
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Orbicularis oris - buccinator - mentalis - zygomatic major
Initiation of the tooth begins

10. Gestational period
Supplies blood to the face and oral cavity
9 months (5 months ultrasound to tell sex)
Retracts the tongue and raises the tip of the tongue
Digstric - Mylohyoid - stylohyoid - geniohyoid

11. Dentinal Tubules
Forms into the inner lining of the oral cavitiy and enamel of the teeth
A line of tissue that extends from the tongue to the floor of the mouth
Tubules that pass through the entire surface of the dentin
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle

12. When do the tooth buds appear?
Week 11
Molaris meaning millstone
Small curved lines that run parellel to the CEJ
When cells rapidly increase in number

13. Mylohyoid Artery
Two weeks thru 8th week
The slightly raised line extending down the middle of the hard palate
The deepest point of the vestibule
Branches off the inferior alveolar artery before intering the mandibular canal

14. Periodontal Ligaments
Dentin found between the tubules
Orbicularis oris - buccinator - mentalis - zygomatic major
Band of fibrous tissue which attaches muscle to bone
Formed by the fibroblast cells and secures the tooth in the socket

15. Lamina Dura
Bi-cuspids
The connective tissue of the marginal gingiva
A line that represents the alveolus bone lining the socket
Dividing point of a multi-rooted tooth

16. Facial Artery
Tooth emerges from gum tissue and becomes visible
10 days
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
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

17. Fimbriated Folds
Constricts the nasopharyngeal passage and elevates the larynx
Appears to be loosely attached - covering the alveolar bone.
Folds of tissue to the the lingual veins
Week 12

18. Anatomical root
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
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
Portion covered with cementum
4th week

19. Maxilla
The space between the unattached gingiva and the tooth
Supplies blood to the roots and periodontal ligaments of the interior teeth
Largest facial bone with two sections joined at the median suture
Two weeks thru 8th week

20. Muscle origine
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
4 cusps/ bifurcated
A pocket formed by the soft tissue of cheeks and gingiva
The fixed attachment of a muscle

21. Rod Core
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
Inner portion of the enamel rod
Incremental lines around the layers of the enamel matrix
Opening in the mouth below the orbit on the maxillary bone

22. Lingual Frenum
Tissue fluid surrounding the cell membrane of the odontoblast
A shallow v-shaped depression located below the bottom of the nose and above the lips
Forms a large cavity above the roots of the maxillary molars
A line of tissue that extends from the tongue to the floor of the mouth

23. Mylohyoid Nerve Branch
Function to resist rotational forces and tilting
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Resists forces that try to pull the tooth outward
A condition where the lower frenum attachment is very short/DDS/frenectomy

24. What are the 4 taste senses and where are they located?
Cells that form dentin
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Creates the wall of the dentinal tubule
Function to resist rotational forces and tilting

25. Lingual Foramen
An overgrowth of the gingival tissue
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
The internal surface at the center of the mandible

26. Mental Nerve Branch
Small linear depression
A triangular area located behind the last molar
Maxillary first molar
Largest division of the trigeminal nerve

27. Gums
Short tubules that seem to crossover to the enamel
Tissue covering the alveolar processes
Small yellowish glands on the labial mucosa
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

28. Imbrication lines
Opening in the mouth below the orbit on the maxillary bone
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

29. What are the largest and strongest of the mandibular teeth
Supplies blood to the roots and periodontal ligaments of the interior teeth
The mandibular molars
Maxillary third molar
Middle two teeth in the mouth

30. What are the three muscles of the neck?
Fleshy elevation under the tongue
Shed from the oral cavity
20
Platysma - trapezius - sternocleidomastoid

31. Contact Area
Largest division of the trigeminal nerve
Where the proximal sides of two teeth come together and touch
Portion of the lips that are red
Enamel is thinner - pulp chamber is smaller -

32. Deep Facial Veins
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Fleshy elevation under the tongue
Triferacated
Act to maintain the gingival integrity of the marginal gingiva

33. Maxillary Artery
Radiates from the developmental groove
Largest of the branches of the external carotid artery; supplies facial structure
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Occlusal surface of the posterior tooth

34. How much saliva is produced daily?
1500 millimeters
A horseshoe shaped groove that follow the curve of the dental arch
An enclosed area that matures into dentin - cementum and pulp
Second teeth next to central incisors

35. Endoderm
2 small raised folds of tissue where the lingual frenum attaches
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
No bicuspids/ no 3rd molars
Respiratory system - digestive system and glandular organs

36. Inferior Nasal Conchae
Scroll like bones outside the nasal cavaties
Layers of tooth tissue become calcified
Raised vertical folds of tissue on the lateral border of the tongue
Trigeminal - facial - glossopharyngeal - hypoglossal

37. Dentinal Hypersensitivity
When the dentin is exposed
A small projection in the middle of the upper lip
Largest division of the trigeminal nerve
Calcified masses of dentin

38. Gingival Groove
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
The line of demarcation between the attached gingiva and the marginal gingiva
Forms after the completion of the apical foramen
Inner portion of the enamel rod

39. Cortical Bone
Outside surface Which is towards the lips
The outer edge of the nostril
Compact bone plate of the facial and lingual surfaces
Upper arch of the teeth

40. Incisive Papilla
Intervating the anterior teeth and the labial gingiva
Inside of the maxillary teeth
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Primitive mouth

41. Mental Artery
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
The portion of the tooth that meets the gingiva
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
The line of demarcation between the attached gingiva and the marginal gingiva

42. What are the 4 pairs of muscles of mastication!
The development of different tissues
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Calcium salts are deposited into formed tooth
Drains the floor of the mouth

43. What is the most common problem with TMJ
The disc becomes displaced
The outer edge of the nostril
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
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

44. What are the 4 extrinsic muscles of the tongue
Curve outward
Genioglossus - hyoglossus - styloglossus - palatoglossus
Portion of the root seen in the oral cavity
A bony plate covered with keratinized tissue located in the anterior portion of the palate

45. Cingulum
Convex area on the lingual surface near gingiva
A small projection in the middle of the upper lip
Tissue fluid surrounding the cell membrane of the odontoblast
The mandibular molars

46. Pterygoid Artery
Full deep rich sound in nasal cavity
Bluish veins that run the length of the tongue
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
10 days

47. Odontoblast
Portion of the lips where the skin meets the vermilion zone
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Cells that form dentin
A horseshoe shaped groove that follow the curve of the dental arch

48. Angle of the Mandible
Where the ramus meets the body of the mandible on the outside border
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 deepest point of the vestibule
The development of different tissues

49. Fossa
Opening in the mouth below the orbit on the maxillary bone
Rounded depression on a tooth
Convex area on the lingual surface near gingiva
Genioglossus - hyoglossus - styloglossus - palatoglossus

50. Function of Digastric
Lift the hyoid bone and assist in opening the mouth
Found near the cementoenamel junction
Elevated are of enamel that forms the Mesial and distal borders
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx