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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. Anterior Alveolar Nerve
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Digstric - Mylohyoid - stylohyoid - geniohyoid
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
A condition where the lower frenum attachment is very short/DDS/frenectomy

2. Furcation
Two vertical extensions of the mandible
Dividing point of a multi-rooted tooth
When cells rapidly increase in number
Conception thru the first two weeks

3. Endoderm
Respiratory system - digestive system and glandular organs
Interdental ligament
Drains the Pterygoid plexus of the veins
The line of demarcation between the attached gingiva and the marginal gingiva

4. Incisal Edge
The mandibular molars
Small curved lines that run parellel to the CEJ
9 weeks thru birth
Biting edge of the teeth

5. Enamel Spindle
Short tubules that seem to crossover to the enamel
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Small raised projections where taste buds are located
Synovial fluid

6. What are the 4 pairs of muscles of mastication!
Resists intrusive forces that try to push the tooth inwards
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Peg shaped crown with a smooth surface
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

7. Internal Jugular Vein
Incremental lines around the layers of the enamel matrix
Formed by the fibroblast cells and secures the tooth in the socket
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

8. Maxillary Arch
Retracts or depresses the tongue
Responsible for laying down the enamel matrix into place
Upper arch of the teeth
6 years old

9. What is the smallest tooth in dentition?
Mandibular central incisors
Looking at the border of the tongue
Pulls the hyoid bone and the tongue anteriorly
Quarters of the teeth

10. What are the intrinsical muscles of the tongue responsible for?
1500 millimeters
Hinge motion and gliding movement
Incremental line indicating trauma of birth
Shaping the tongue during speech - mastication and swallowing

11. Dentinal Tubules
Where the ramus meets the body of the mandible on the outside border
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
When the tissue becomes inflamed
Tubules that pass through the entire surface of the dentin

12. Soft Palate
Covers muscle tissue in the posterior portion of the palate
Short tubules that seem to crossover to the enamel
Tooth emerges from gum tissue and becomes visible
The development of different forms

13. Purpose of premolars
Used to pulverize food
The layer of dentin that surrounds the pulp
Origin of the tooth
Opening in the mouth below the orbit on the maxillary bone

14. Meniscus
Divides the crown and the root
Formed by the fibroblast cells and secures the tooth in the socket
Disk that acts like a cushion between the temporal bone and the condyloid process
Inside surface Which is towards the tongue - on anterior teeth

15. Nasmyths Membrane
Permeante teeth replace the primary teeth
Inside of the maxillary teeth
Covering over the enamel that is left over from the epithelium ameloblasts
Aid in attaching the gingiva to the alveolar bone

16. Proliferation
The inner surface of the lips
Forms the remaining 2/3 of the hard and soft palate uvula
Where the ectoderm layer matures into the enamel
Chewing and swallowing food

17. Deep Facial Veins
Supplies blood to the face and oral cavity
Bi-cuspids
4/5 cusps/ 3 roots
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

18. Fetal Alcohol Syndrome symptons
Small head - low nasal bridge - thin upper lip - small mandible
6 years old
Retracts or depresses the tongue
The deepest point of the vestibule

19. Mandible Arch
Forms the bulk of the tooth
Lower arch of the teeth
Small raised projections where taste buds are located
Portion of the lips that are red

20. Cusps
Duct located on the parotid papilla
A horseshoe shaped groove that follow the curve of the dental arch
Small head - low nasal bridge - thin upper lip - small mandible
Pointed or rounded mounds on the crown of the tooth

21. Lingual Nerve Branch
Primary and permanent
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
Function to resist rotational forces and tilting
2 small raised folds of tissue where the lingual frenum attaches

22. What is saliva made of?
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
H20 - mucin - organic salts and digestive enzymes
Joined at the midline and are often referred to as the median Palatine suture
Layers of tooth tissue become calcified

23. Triangular Ridge
When the dentin is exposed
A line that represents the alveolus bone lining the socket
Looking at the border of the tongue
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

24. Primary palate
Small curved lines that run parellel to the CEJ
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
4 cusps/ bifurcated
Separates the developing oral cavities from the nasal cavities

25. Intercellular Substances
Inner portion of the enamel rod
Substances between cells
Found only in multi-rooted teeth and resists rotational forces
4 cusps/ bifurcated

26. Tubercle of the Lip
Set of arches found farther in the back of the throat
Calcified masses of dentin
The study of the microscopic structure and functions of tissues
A small projection in the middle of the upper lip

27. Maxillary Nerve Branch
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Drains the maxiallary artery and superficial temporal arteries
Demonstrates a disturbance in the body metabolism
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

28. What ligament is retained the longest during periodontal disease?
Interdental ligament
What divides the tongue in half and runs from the base to the tip of the tongue
Stained growth rings in dentin
Retracts or depresses the tongue

29. Fungiform Papillae
The development of different cells
Layers of tooth tissue become calcified
Papillae that give the tongue the strawberry effect
A horseshoe shaped groove that follow the curve of the dental arch

30. Lesser Palatine Foramen
Assist in the movement and functioning of the tongue
Branches off the inferior alveolar artery before intering the mandibular canal
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
When the dentin is exposed

31. What is the maxillary cuspid known as?
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Cells From which connective tissue evolve
The cornerstone of the mouth
When cells rapidly increase in number

32. Cingulum
The space between the unattached gingiva and the tooth
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Convex area on the lingual surface near gingiva
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

33. Oblique Ridge
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Located on the inside of the body of the ramus
Drains the superficial veins of the face and neck into the subclavian vein
Biting edge of the teeth

34. What are the two muscles of the soft palate?
Origin of the tooth
Forms into dentin - cementum and pulp of the teeth
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Palatoglossus - palatopharyngeal

35. Histo Differentation
When the surface of the teeth becomes grooved
A bony plate covered with keratinized tissue located in the anterior portion of the palate
The development of different tissues
Acts as anchors between the alveolar bone and the tooth

36. Mucogingival Junction
Folds of tissue to the the lingual veins
Allow flexibility during mastication - speech
Lower arch of the teeth
A line of demarcation between the attached gingiva and alveolar mucosa

37. Fordyce's Spots
Small yellowish glands on the labial mucosa
Assist in depressing the mandible and elevating the tongue
Where the proximal sides of two teeth come together and touch
The slightly raised line extending down the middle of the hard palate

38. Odontal Fiber Groups
Palatoglossus - palatopharyngeal
Oval depression of temporal bone in condyloid process
A pocket formed by the soft tissue of cheeks and gingiva
Allow flexibility during mastication - speech

39. Torus Mandibularis
Acts as anchors between the alveolar bone and the tooth
Excess bone formations under the tongue on the alvellar bone
6 months/3years
Found only in multi-rooted teeth and resists rotational forces

40. Function of Palatopharyngeal
Cells From which connective tissue evolve
Maxillary third molar
Constricts the nasopharyngeal passage and elevates the larynx
Convex area on the lingual surface near gingiva

41. Mental Protuberance
The tip of the chin
The deepest point of the vestibule
Small head - low nasal bridge - thin upper lip - small mandible
Inside surface Which is towards the tongue - on anterior teeth

42. Mamelons
Three bulges on the incisal edge
Joined at the midline and are often referred to as the median Palatine suture
Quarters of the teeth
Cut - tear - and grind food

43. Nasal-Labial Groove
Excess bone formations under the tongue on the alvellar bone
A faint line going from the ala of the nose to the corner of the mouth
Layers of tooth tissue become calcified
Triferacated

44. Horizontal Fiber Group
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Greater - lesser - naso palatine nerves
Functions the same as the alveolar cfg; originate in alveolar bone
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

45. Palatine Raphe
The slightly raised line extending down the middle of the hard palate
Portion of the lips that are red
A period of both primary teeth and permeant teeth are in the dentition
2 to 3 pints

46. What teeth are removed if overcrowding occurs?
Joined at the midline and are often referred to as the median Palatine suture
6 months/3years
Bicuspids
Extends from the mucogingival junction to the gingival groove

47. When do oral and nasal cavity separate and palate develop?
Week 12
Forms the remaining 2/3 of the hard and soft palate uvula
A projection that extends off the back of the soft palate
A pocket formed by the soft tissue of cheeks and gingiva

48. Quadrants
Duct located on the parotid papilla
Quarters of the teeth
Where the proximal sides of two teeth come together and touch
Place where the groove comes together or fissures cross

49. What are the three muscles of the neck?
Small raised projections where taste buds are located
Mastication - aids in speech - influence facial structure - chewing surfaces
4 cusps/ bifurcated
Platysma - trapezius - sternocleidomastoid

50. Fissure
Resulting from an imperfect union where the lobes come together
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Study of the structure and form of the teeth
Found only in multi-rooted teeth and resists rotational forces