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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. Lacrimal Bones
Pulls the hyoid bone and the tongue anteriorly
A line of demarcation between the attached gingiva and alveolar mucosa
The bone that separates the root on a tooth
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

2. Philtrum
Small yellowish glands on the labial mucosa
A condition where the lower frenum attachment is very short/DDS/frenectomy
Intervating the anterior teeth and the labial gingiva
Vertical groove on the midline of the upper lip

3. Tubercle of the Lip
Excess dryness of the mouth
A small projection in the middle of the upper lip
The development of different cells
Extends from the medial corner of the eye to the nasal cavity

4. Styloid Process
Sharp projection on the under surface of the temporal bone
(free gingiva) surrounds the teeth
The development of different tissues
Pulverizing or chewing surface

5. Cleft Palate
Responsible for laying down the enamel matrix into place
A shallow v-shaped depression located below the bottom of the nose and above the lips
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
9 months (5 months ultrasound to tell sex)

6. Sublingual Caruncles
Enamel is thinner - pulp chamber is smaller -
Arteries supplying blood to most of the head and the neck
2 small raised folds of tissue where the lingual frenum attaches
Acts as anchors between the alveolar bone and the tooth

7. What are the largest and strongest of the mandibular teeth
Compact bone plate of the facial and lingual surfaces
Teeth after cuspids
The mandibular molars
Bluish veins that run the length of the tongue

8. TMJ bones are bathed In what solution?
Natural teeth in position
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Elevates the posterior portion of the tongue and narrows the fauces
Synovial fluid

9. Labial Commissures
Corners of the mouth
Follows the length of the body of the mandible past the last tooth and up to the ramus
A line of demarcation between the attached gingiva and alveolar mucosa
Found only in multi-rooted teeth and resists rotational forces

10. Mental Protuberance
Cells develop into different tissues
The tip of the chin
Developmental segment of a tooth
6 months/3years

11. Secondary Dentin
Forms after the completion of the apical foramen
Natural teeth in position
Developmental segment of a tooth
Stained growth rings in dentin

12. Resonance
Quarters of the teeth
The moveable attachment of the muscle
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Full deep rich sound in nasal cavity

13. Hypercementosis
Causes a thickening of the cementum around the apex
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Resists forces that try to pull the tooth outward
Retracts the tongue and raises the tip of the tongue

14. Lamina Dura
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
The mandibular first premolar
A line that represents the alveolus bone lining the socket
Opening for the ear

15. Middle Superior Alveolar Nerve
Trigeminal - facial - glossopharyngeal - hypoglossal
Extreme variations from the norm
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
The gingiva in the floor of the gingival sulcus that attaches to the enamel

16. Embryology
Respiratory system - digestive system and glandular organs
Study of prenatal growth and the developing process of an individual
To lubricate the oral cavity and to moisten food
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

17. Cuspid
Formed by the uniting of lobes during development of crown
Band of fibrous tissue which attaches muscle to bone
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Third tooth from the midline

18. Stenson's Duct
Separation of the upper lip ( 1 of 1000 live births)
Where the proximal sides of two teeth come together and touch
Duct located on the parotid papilla
Oval structures that are located on the dorsal surface of the tongue

19. Foliate Papillae
Follows the length of the body of the mandible past the last tooth and up to the ramus
Triferacated
Peg shaped crown with a smooth surface
Raised vertical folds of tissue on the lateral border of the tongue

20. Dentoperiosteal Fiber Groups
Supportive fibers that anchor the tooth to the bone
Three cusps/ trifurcated
Primitive mouth
Forms into the inner lining of the oral cavitiy and enamel of the teeth

21. Salivary Glands
A period of both primary teeth and permeant teeth are in the dentition
6 years old
Set of arches found farther in the back of the throat
Secrete saliva to assist in process of digestion

22. Gestational period
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
9 months (5 months ultrasound to tell sex)
Fleshy elevation under the tongue
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

23. Vermilion Border
Portion of the lips where the skin meets the vermilion zone
Buccal - lingual - and inferior alveolar
Radiates from the developmental groove
Responsible for laying down the enamel matrix into place

24. Which molar is the wisdom tooth
Greater - lesser - naso palatine nerves
Vertical groove on the midline of the upper lip
Excess dryness of the mouth
Maxillary third molar

25. Cyto differentiation
The development of different forms
The development of different cells
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Growth from the oral epithelium that gives rise to the tooth buds

26. Xygote
When cells rapidly increase in number
The cornerstone of the mouth
Looking at the border of the tongue
Mandibular central incisors

27. Sharpey's Fibers
Mastication - aids in speech - influence facial structure - chewing surfaces
Acts as anchors between the alveolar bone and the tooth
Portion of the root seen in the oral cavity
Resists forces that try to pull the tooth outward

28. Torus
Quarters of the teeth
Excess bone in the middle of the palate
Primitive mouth
A line of tissue that extends from the tongue to the floor of the mouth

29. What are the 4 taste senses and where are they located?
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Study of prenatal growth and the developing process of an individual
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Lining covers inside of the oral cavity

30. Enamel Dysplasia
Elevated are of enamel that forms the Mesial and distal borders
When the surface of the teeth becomes grooved
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

31. Epithelial Attachment
Trigeminal nerve--because it ennervates the maxilla and the mandible
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Aid in attaching the gingiva to the alveolar bone
Located in a depressed area between the pillars

32. Osteoclasts
Folds of tissue to the the lingual veins
The area on the crown of the tooth that is nearest the gingival
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
A projection that extends off the back of the soft palate

33. Fetus
Triferacated
The corners of the mouth where the top and bottom lip meet
9 weeks thru birth
4/5 cusps/ 3 roots

34. Perikymata
Small grooves noted on some teeth
Cluster of tissue that manufactures and secrets fluid
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Small curved lines that run parellel to the CEJ

35. Transverse Ridge
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
The study of the microscopic structure and functions of tissues
Ligaments and muscles of mastication
Supportive fibers that anchor the tooth to the bone

36. Circular Ligament Fiber Groups
Located behind the ramus of the mandible and branches into five arteries
Circle and tighten the gingival margin around the neck of the tooth
A bat shaped bone which forms the anterior portion of the skull
A bony plate covered with keratinized tissue located in the anterior portion of the palate

37. Maxillary Nerve Branch
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Place where the groove comes together or fissures cross
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Secrete saliva to assist in process of digestion

38. Cervical Third
The slightly raised line extending down the middle of the hard palate
Trigeminal nerve--because it ennervates the maxilla and the mandible
Corners of the mouth
The area on the crown of the tooth that is nearest the gingival

39. Vermilion Zone
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Middle two teeth in the mouth
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Portion of the lips that are red

40. Alveolus
Bony projection found on the bottom border of the temporal bone
Where the ectoderm layer matures into the enamel
Bone that surrounds the root of the tooth
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

41. Cusp of Caribelli
Band of fibrous tissue which attaches muscle to bone
Small curved lines that run parellel to the CEJ
The deepest point of the vestibule
Fifth cusp located on the mesial surface lingual surface of maxillary first molars

42. What are the characteristics of deciduous teeth?
Lining covers inside of the oral cavity
Secrete saliva to assist in process of digestion
Palatoglossus - palatopharyngeal
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

43. Incisive Papilla
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Rounded depression on a tooth
Small head - low nasal bridge - thin upper lip - small mandible
Platysma - trapezius - sternocleidomastoid

44. Rod Core
Formed by the fibroblast cells and secures the tooth in the socket
Inner portion of the enamel rod
Ligaments and muscles of mastication
Primary and permanent

45. Fibroblasts
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Cells From which connective tissue evolve
Two weeks thru 8th week

46. Histo Differentation
The development of different tissues
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Pulverizing or chewing surface
The area on the crown of the tooth that is nearest the gingival

47. Labial Mucosa
The first predentin that is formed and matures within the tube
The inner surface of the lips
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

48. Lines of Retzius
Mildest form of cleft palate
Platysma - trapezius - sternocleidomastoid
Incremental lines around the layers of the enamel matrix
4 cusps/ bifurcated

49. How much saliva do the salivary glands produce in 24 hours?
2 to 3 pints
Upper arch of the teeth
The slightly raised line extending down the middle of the hard palate
A period of both primary teeth and permeant teeth are in the dentition

50. What are the 4 pairs of muscles of mastication!
To lubricate the oral cavity and to moisten food
Hinge motion and gliding movement
Greater - lesser - naso palatine nerves
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles