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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. Vermilion Border
Retracts or depresses the tongue
Synovial fluid
Portion of the lips where the skin meets the vermilion zone
Enamel forming cells

2. Mesenchyme Tissue
A small projection in the middle of the upper lip
Two weeks thru 8th week
Primary embryonic mesoderm layer that develops during the morpho differentiation period
The inner surface of the cheeks

3. Landmarks
Wearing away of the incisal or occlusal surfaces of the tooth
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Genioglossus - hyoglossus - styloglossus - palatoglossus
Of or pertaining to area surrounding naval cavity

4. Pulp horns
Pointed elongations of the pulp
Genioglossus - hyoglossus - styloglossus - palatoglossus
Bi-cuspids
The crown of the tooth that is nearest the incisal edge near the anterior tooth

5. Mental Protuberance
The inner surface of the lips
Folds of tissue to the the lingual veins
Excess bone formations under the tongue on the alvellar bone
The tip of the chin

6. Concave
A bony projection that separates each socket
Forms the remaining 2/3 of the hard and soft palate uvula
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Indented

7. Cyto differentiation
Primary embryonic mesoderm layer that develops during the morpho differentiation period
The development of different cells
The inner surface of the lips
Two cortical bone plates that come together between each tooth

8. TMJ bones are bathed In what solution?
Separation of the upper lip ( 1 of 1000 live births)
Trigeminal nerve--because it ennervates the maxilla and the mandible
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Synovial fluid

9. Middle Superior Alveolar Nerve
An overgrowth of the gingival tissue
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Canal or passage for fluid
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

10. Gingiva
Composed of mucosa and surrounds the necks of the teeth
Biting edge of the teeth
The layer of dentin that surrounds the pulp
Excess bone formations under the tongue on the alvellar bone

11. Naso Palatine Nerve
Acts as anchors between the alveolar bone and the tooth
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Pulls the hyoid bone and the tongue anteriorly
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

12. What is the purpose of saliva?
Resulting from an imperfect union where the lobes come together
Supplies blood to the brain and the eyes
To lubricate the oral cavity and to moisten food
Drains the floor of the mouth

13. Xygote
Slight ridges on the cervical third of certain teeth that extend mesiodistally
When cells rapidly increase in number
The inner surface of the cheeks
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

14. Articular Disc
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Mandibular central incisors
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Calcified masses of dentin

15. What are the 4 extrinsic muscles of the tongue
Ligaments and muscles of mastication
The corners of the mouth where the top and bottom lip meet
Disk that acts like a cushion between the temporal bone and the condyloid process
Genioglossus - hyoglossus - styloglossus - palatoglossus

16. Function of Styloglossus
Indented
Retracts the tongue and raises the tip of the tongue
Looking at the border of the tongue
Forms into dentin - cementum and pulp of the teeth

17. Dental Lamina
Extreme variations from the norm
4/5 cusps/ 3 roots
9 months (5 months ultrasound to tell sex)
Growth from the oral epithelium that gives rise to the tooth buds

18. Styloid Process
Small grooves noted on some teeth
Portion covered with cementum
Found near the cementoenamel junction
Sharp projection on the under surface of the temporal bone

19. Buckle groove
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
A horseshoe shaped groove that follow the curve of the dental arch
A condition where the lower frenum attachment is very short/DDS/frenectomy
Covering over the enamel that is left over from the epithelium ameloblasts

20. What is the largest cranial nerve and the most important to dental auxillaries and why?
Initiation of the tooth begins
Trigeminal nerve--because it ennervates the maxilla and the mandible
Supplies blood to the face and oral cavity
The bone that separates the root on a tooth

21. Angle of the Mandible
Aid in attaching the gingiva to the alveolar bone
Where the ramus meets the body of the mandible on the outside border
Conception thru the first two weeks
Cells develop into different tissues

22. Function of Hyoglossus
Depresses the tongue
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
The moveable attachment of the muscle

23. Greater Palatine Nerve
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Small linear depression
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

24. Cleft Lip
Separation of the upper lip ( 1 of 1000 live births)
Found only in multi-rooted teeth and resists rotational forces
A period of both primary teeth and permeant teeth are in the dentition
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

25. Exfoliated
Act to maintain the gingival integrity of the marginal gingiva
Buccal - lingual - and inferior alveolar
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Shed from the oral cavity

26. Function of Digastric
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Rounded depression on a tooth
Surface towards the midline
Lift the hyoid bone and assist in opening the mouth

27. Imbritation Lines of Von Eboner
Draws down the mandible and corners of the mouth
Stained growth rings in dentin
Linear elevation of the tooth
Conception thru the first two weeks

28. Morpho Differentiation
Molars
Permeante teeth replace the primary teeth
Origin of the tooth
Forming organ takes shape and resembles the shape of a bell

29. What are the characteristics of deciduous teeth?
Chewing and swallowing food
A bat shaped bone which forms the anterior portion of the skull
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
12 years

30. Apical Fiber Group
Resists forces that try to pull the tooth outward
Scroll like bones outside the nasal cavaties
4 cusps/ bifurcated
An overgrowth of the gingival tissue

31. Maxillary vein
Natural teeth in position
Mandibular central incisors
A small projection in the middle of the upper lip
Drains the Pterygoid plexus of the veins

32. Occlusion third
Oval depression of temporal bone in condyloid process
Chewing and swallowing food
Tooth emerges from gum tissue and becomes visible
Occlusal surface of the posterior tooth

33. Horizontal Fiber Group
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Functions the same as the alveolar cfg; originate in alveolar bone
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Where the proximal sides of two teeth come together and touch

34. Xerostomia
Excess dryness of the mouth
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
9 weeks thru birth
Assist in depressing the mandible and elevating the tongue

35. What are the extrinsic muscles of the tongue responsible for?
Outside surface Which is towards the cheek - on posterior teeth
Assist in the movement and functioning of the tongue
Week 11
Stained growth rings in dentin

36. Peg lateral
Band of fibrous tissue which attaches muscle to bone
Peg shaped crown with a smooth surface
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

37. Interdental Gingiva
Excess bone in the middle of the palate
An extension of an unattached gingiva and the tooth
Drains the floor of the mouth
Appears to be loosely attached - covering the alveolar bone.

38. Mylohyoid Nerve Branch
Tissue covering the alveolar processes
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Portion of the lips that are red
Cluster of tissue that manufactures and secrets fluid

39. 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 the structure and form of the teeth
Follows the inside of the ramus and the body of the mandible
Cheek bones--the most breakable bone in the body

40. Rami
Where the proximal sides of two teeth come together and touch
Acts as anchors between the alveolar bone and the tooth
Two vertical extensions of the mandible
32

41. Cervical line
Divides the crown and the root
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Place where the groove comes together or fissures cross
2 to 3 pints

42. What are the eight landmarks of the face?
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Assists in elevating the chin
A dense tissue covered with mucous membrane that can withstand chewing

43. What are the four major muscles of facial expression
10 days
Orbicularis oris - buccinator - mentalis - zygomatic major
Week 12
What divides the tongue in half and runs from the base to the tip of the tongue

44. Osteoclasts
Resists intrusive forces that try to push the tooth inwards
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Extends from the mucogingival junction to the gingival groove
What divides the tongue in half and runs from the base to the tip of the tongue

45. Mandibular Foramen
10 days
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Small head - low nasal bridge - thin upper lip - small mandible
Located on the inside of the body of the ramus

46. Odontoblast
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Dentin found between the tubules
4/5 cusps/ 3 roots
Cells that form dentin

47. Function of Geniohyoid
Triangular space in the gingival direction when two adjacent teeth are in contact
Pulls the hyoid bone and the tongue anteriorly
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Middle line of the teeth

48. Ectoderm
Found near the cementoenamel junction
Branches off the inferior alveolar artery before intering the mandibular canal
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Hinge motion and gliding movement

49. Sulingual Folds
The crown of the tooth that is nearest the incisal edge near the anterior tooth
A pocket formed by the soft tissue of cheeks and gingiva
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Synovial fluid

50. Philtrum
Vertical groove on the midline of the upper lip
Pointed or rounded mounds on the crown of the tooth
Largest division of the trigeminal nerve
Bicuspids