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Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. Purpose of premolars
Forms the remaining 2/3 of the hard and soft palate uvula
To dissolve
Mucosa that covers the alveolar bone
Used to pulverize food

2. Function of Geniohyoid
Mandibular central incisors
Pulls the hyoid bone and the tongue anteriorly
The layer of dentin that surrounds the pulp
Pulverizing or chewing surface

3. Palantine Tonsils
Largest facial bone with two sections joined at the median suture
Responsible for laying down the enamel matrix into place
Located in a depressed area between the pillars
H20 - mucin - organic salts and digestive enzymes

4. How many roots/ cusps does the mandibular first molar have?
(free gingiva) surrounds the teeth
Bifurcated/ 5 cusps
A line that represents the alveolus bone lining the socket
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

5. What are the 4 pairs of muscles of mastication!
Substances between cells
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
An enclosed area that matures into dentin - cementum and pulp
A line that represents the alveolus bone lining the socket

6. Lamina Propria
The connective tissue of the marginal gingiva
Indented
Located in a depressed area between the pillars
Shaping the tongue during speech - mastication and swallowing

7. Incisive Arteries
Drains the Pterygoid plexus of the veins
A shallow v-shaped depression located below the bottom of the nose and above the lips
Supplies blood to the roots and periodontal ligaments of the interior teeth
Three bulges on the incisal edge

8. Torus Mandibularis
Mucosa that covers the alveolar bone
Bicuspids
Excess bone formations under the tongue on the alvellar bone
Outside surface Which is towards the lips

9. Embryo
Bluish veins that run the length of the tongue
Portion of the lips where the skin meets the vermilion zone
The development of different tissues
Two weeks thru 8th week

10. Caruncle
Third tooth from the midline
2 small raised folds of tissue where the lingual frenum attaches
Fleshy elevation under the tongue
Layers of tooth tissue become calcified

11. Morpho Differentiation
Teeth will not erupt in proper position
Forming organ takes shape and resembles the shape of a bell
The tip of the chin
The ridges that run horizontally across the hard palate behind the incisive papilla

12. Morpho differentiation
Follows the inside of the ramus and the body of the mandible
Assist in depressing the mandible and elevating the tongue
The development of different forms
A bony projection that separates each socket

13. Concave
Pointed elongations of the pulp
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Molaris meaning millstone
Indented

14. Horizontal Fiber Group
Functions the same as the alveolar cfg; originate in alveolar bone
Middle line of the teeth
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Forms after the completion of the apical foramen

15. Buccal
Mucosa that covers the alveolar bone
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Outside surface Which is towards the cheek - on posterior teeth
Tubules that pass through the entire surface of the dentin

16. Maxillary vein
A period of both primary teeth and permeant teeth are in the dentition
Drains the Pterygoid plexus of the veins
The internal surface at the center of the mandible
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

17. Attached Gingiva
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Extends from the mucogingival junction to the gingival groove
The layer of dentin that surrounds the pulp
Elevated are of enamel that forms the Mesial and distal borders

18. Vestibule Fornix
Circle and tighten the gingival margin around the neck of the tooth
The deepest point of the vestibule
Growth from the oral epithelium that gives rise to the tooth buds
Found near the cementoenamel junction

19. Imbracation Lines
Maxillary third molar
Synovial fluid
The portion of the tooth that meets the gingiva
Small curved lines that run parellel to the CEJ

20. Function of Palatopharyngeal
Constricts the nasopharyngeal passage and elevates the larynx
Depresses the tongue
Separation of the upper lip ( 1 of 1000 live births)
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

21. Maxillary Artery
Mandibular central incisors
Largest of the branches of the external carotid artery; supplies facial structure
A line that represents the alveolus bone lining the socket
Permeante teeth replace the primary teeth

22. Nasal-Labial Groove
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
A faint line going from the ala of the nose to the corner of the mouth
Formed by the uniting of lobes during development of crown
The development of different cells

23. What are the 4 extrinsic muscles of the tongue
10 days
A condition where the lower frenum attachment is very short/DDS/frenectomy
Cells develop into different tissues
Genioglossus - hyoglossus - styloglossus - palatoglossus

24. When does the maxillary first molar erupt?
Primary embryonic mesoderm layer that develops during the morpho differentiation period
6 years old
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Orbicularis oris - buccinator - mentalis - zygomatic major

25. Inferior Nasal Conchae
Scroll like bones outside the nasal cavaties
Inside of the maxillary teeth
Occurs in unusual ways and distorted crowns may appear
The slightly raised line extending down the middle of the hard palate

26. Contact Area
To bulge of curve outward
A flap of tissue on the on the buccal mucosa
Biting edge of the teeth
Where the proximal sides of two teeth come together and touch

27. What are the only permeant teeth that are not succedaneous?
Molars
Forms the bulk of the tooth
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Surface towards the midline

28. What ligament is retained the longest during periodontal disease?
Interdental ligament
Buccal - lingual - and inferior alveolar
Healthy gingival tissue with an orange texture
Largest of the branches of the external carotid artery; supplies facial structure

29. Lingual Veins
Greater - lesser - naso palatine nerves
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Bluish veins that run the length of the tongue

30. Stensens' Duct (aka Parotid)

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31. Lacrimal Bones
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
12 years
Corners of the mouth

32. Dentinal Tubules
Origin - fixed point - insertion - movable point
Tubules that pass through the entire surface of the dentin
Band of fibrous tissue which attaches bone to bone
Permeante teeth replace the primary teeth

33. Middle Superior Alveolar Nerve
Supplies blood to the brain and the eyes
Forming organ takes shape and resembles the shape of a bell
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Three bulges on the incisal edge

34. Stippled
Healthy gingival tissue with an orange texture
Circle and tighten the gingival margin around the neck of the tooth
Extends from the mucogingival junction to the gingival groove
Largest division of the trigeminal nerve

35. Proliferation
Where the ectoderm layer matures into the enamel
The fixed attachment of a muscle
Resists intrusive forces that try to push the tooth inwards
Tissue fluid surrounding the cell membrane of the odontoblast

36. Pterygoid plexus of the veins
Two
The largest of three openings located in the posterior region of the hard palate
Portion of the root seen in the oral cavity
A junction or center of veins that directly or indirectly drain a vast area

37. Pterygoid Process
A pocket formed by the soft tissue of cheeks and gingiva
32
Wings of the sphenoid bone
Appears to be loosely attached - covering the alveolar bone.

38. 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
A junction or center of veins that directly or indirectly drain a vast area
2 small raised folds of tissue where the lingual frenum attaches
Substances between cells

39. Fissure
Pulls the hyoid bone and the tongue anteriorly
Resulting from an imperfect union where the lobes come together
Sharp projection on the under surface of the temporal bone
Assist in depressing the mandible and elevating the tongue

40. Naso Palatine Nerve
Molars
Tubules that pass through the entire surface of the dentin
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch

41. Function of Sternocleidomastoid
Appears to be loosely attached - covering the alveolar bone.
Portion covered with cementum
Assists in elevating the chin
Found near the cementoenamel junction

42. Sulingual Folds
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Resists forces that try to pull the tooth outward
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

43. Incisal Edge
Genioglossus - hyoglossus - styloglossus - palatoglossus
A pocket formed by the soft tissue of cheeks and gingiva
Biting edge of the teeth
Platysma - trapezius - sternocleidomastoid

44. Pulp horns
Pointed elongations of the pulp
Resulting from an imperfect union where the lobes come together
Duct located on the parotid papilla
Joined at the midline and are often referred to as the median Palatine suture

45. Pulpitis
When the tissue becomes inflamed
Draws down the mandible and corners of the mouth
An enclosed area that matures into dentin - cementum and pulp
Cluster of tissue that manufactures and secrets fluid

46. What is the smallest tooth in dentition?
Separation of the upper lip ( 1 of 1000 live births)
Surface towards the midline
Mandibular central incisors
Opening in the mouth below the orbit on the maxillary bone

47. Gingival Sulcus
The space between the unattached gingiva and the tooth
The largest of the salivary glands which lie just below and in front of the ear
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Function to resist rotational forces and tilting

48. Interdental Ligament Group
Resist rotational forces and hold teeth in inter-proximal contact
The layer of dentin that surrounds the pulp
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Portion of the lips where the skin meets the vermilion zone

49. Gingival Hyperplasia
9 months (5 months ultrasound to tell sex)
When the dentin is exposed
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
An overgrowth of the gingival tissue

50. Evanesce
To dissolve
Layers of tooth tissue become calcified
Acts as anchors between the alveolar bone and the tooth
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10