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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.
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. Dental Arteries
Triferacated
Inside of the maxillary teeth
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Acts as anchors between the alveolar bone and the tooth

2. Xygote
Cut - tear - and grind food
When cells rapidly increase in number
Set of arches found farther in the back of the throat
A line of demarcation between the attached gingiva and alveolar mucosa

3. Interdental Gingiva
Bicuspids
An extension of an unattached gingiva and the tooth
The internal surface at the center of the mandible
Natural teeth in position

4. Nasmyths Membrane
To dissolve
Covering over the enamel that is left over from the epithelium ameloblasts
Cells that form dentin
1500 millimeters

5. Circular Ligament Fiber Groups
Circle and tighten the gingival margin around the neck of the tooth
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Cells that form dentin
A rounded area beyond the last posterior maxillary tooth

6. Labial Commissures
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Origin - fixed point - insertion - movable point
Scroll like bones outside the nasal cavaties
The corners of the mouth where the top and bottom lip meet

7. Hard Palate
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
9 weeks thru birth

8. External Jugular Vein
Fleshy elevation under the tongue
Tooth emerges from gum tissue and becomes visible
Drains the superficial veins of the face and neck into the subclavian vein
Elevates the posterior portion of the tongue and narrows the fauces

9. Function of Palatoglossus
The area on the crown of the tooth that is nearest the gingival
Elevates the posterior portion of the tongue and narrows the fauces
Located in a depressed area between the pillars
Folds of tissue to the the lingual veins

10. Xygote
Moves the head backward and laterally
Conception thru the first two weeks
Used to pulverize food
Occlusal surface of the posterior tooth

11. Agenesis
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
Occurs in unusual ways and distorted crowns may appear
The cornerstone of the mouth
Draws down the mandible and corners of the mouth

12. If a patient receives toxic agents - how long does it take for their sense of taste to return?
Small raised projections where taste buds are located
Calcium salts are deposited into formed tooth
The area on the crown of the tooth that is nearest the gingival
10 days

13. What are the two ways the TMJs move?
Compact bone plate of the facial and lingual surfaces
Hinge motion and gliding movement
Acts as anchors between the alveolar bone and the tooth
(free gingiva) surrounds the teeth

14. Mental Protuberance
A period of both primary teeth and permeant teeth are in the dentition
The deepest point of the vestibule
Enamel is thinner - pulp chamber is smaller -
The tip of the chin

15. Fetal Alcohol Syndrome symptons
Curve outward
Branches off the inferior alveolar artery before intering the mandibular canal
Looking at the border of the tongue
Small head - low nasal bridge - thin upper lip - small mandible

16. Submandibular Glands

17. How many cusps/ roots do the 2/3rd maxillary molars have?
Maxillary first molar
Tooth emerges from gum tissue and becomes visible
Three cusps/ trifurcated
The area on the crown of the tooth that is nearest the gingival

18. Glenoid Fossa
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
Bi-cuspids
Pulverizing or chewing surface
Oval depression of temporal bone in condyloid process

19. What ligament is retained the longest during periodontal disease?
Dentin found between the tubules
The inner surface of the lips
When cells rapidly increase in number
Interdental ligament

20. Cementoblast
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Folds of tissue to the the lingual veins
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
Cells that form cementum

21. Alveolar Crest Fiber Group
Function to resist rotational forces and tilting
Triangular space in the gingival direction when two adjacent teeth are in contact
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct

22. Anterior Tonsillar Pillar
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Corners of the mouth
Portion covered with cementum

23. Evanesce
To dissolve
When the dentin is exposed
Small bony projections surrounding the lingual foramen
Outside surface Which is towards the lips

24. Dentinal Hypersensitivity
When the dentin is exposed
No bicuspids/ no 3rd molars
Smaller branch that ennervates the soft palate uvula and tonsils
When the tissue becomes inflamed

25. Resonance
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Interdental ligament
Oval depression of temporal bone in condyloid process
Full deep rich sound in nasal cavity

26. Sublingual Caruncles
Two cortical bone plates that come together between each tooth
2 small raised folds of tissue where the lingual frenum attaches
Surface away from the midline
Three cusps/ trifurcated

27. What are the only permeant teeth that are not succedaneous?
2 to 3 pints
Molars
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Three cusps/ trifurcated

28. Endoderm
Respiratory system - digestive system and glandular organs
Follows the length of the body of the mandible past the last tooth and up to the ramus
10 days
Healthy gingival tissue with an orange texture

29. Alveolar Mucosa
Appears to be loosely attached - covering the alveolar bone.
Mucosa that covers the alveolar bone
The space between the unattached gingiva and the tooth
The inner surface of the cheeks

30. Symphysis
H20 - mucin - organic salts and digestive enzymes
Occlusal surface of the posterior tooth
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
A bony projection that separates each socket

31. Enamel Dysplasia
Set of arches found farther in the back of the throat
Arteries supplying blood to most of the head and the neck
When the surface of the teeth becomes grooved
Pointed elongations of the pulp

32. Cleft Lip
Separation of the upper lip ( 1 of 1000 live births)
Resists intrusive forces that try to push the tooth inwards
Found only in multi-rooted teeth and resists rotational forces
Layers of tooth tissue become calcified

33. Labial Commissures
Corners of the mouth
Excess bone formations under the tongue on the alvellar bone
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Genioglossus - hyoglossus - styloglossus - palatoglossus

34. Marginal Ridges
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Elevated are of enamel that forms the Mesial and distal borders
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
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

35. Clinical root
Ligaments and muscles of mastication
Portion of the root seen in the oral cavity
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
The bone that separates the root on a tooth

36. Eruption
Lining covers inside of the oral cavity
Tooth emerges from gum tissue and becomes visible
Cells develop into different tissues
Teeth will not erupt in proper position

37. Maxillary Artery
Where the proximal sides of two teeth come together and touch
Largest of the branches of the external carotid artery; supplies facial structure
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Quarters of the teeth

38. Morpho Differentiation
A projection that extends off the back of the soft palate
Forming organ takes shape and resembles the shape of a bell
The outer edge of the nostril
Assist in the movement and functioning of the tongue

39. Odontogenesis
Origin of the tooth
12 years
Excess dryness of the mouth
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch

40. Pterygoid plexus of the veins
A junction or center of veins that directly or indirectly drain a vast area
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Bicuspids
Narrow long enamel tuft

41. Oblique Fiber Group
A shallow v-shaped depression located below the bottom of the nose and above the lips
Resists intrusive forces that try to push the tooth inwards
Cluster of tissue that manufactures and secrets fluid
Occlusal surface of the posterior tooth

42. Marginal GIngiva
Forms into the inner lining of the oral cavitiy and enamel of the teeth
(free gingiva) surrounds the teeth
Elevated are of enamel that forms the Mesial and distal borders
The disc becomes displaced

43. Styloid Process
Cut - tear - and grind food
Palatoglossus - palatopharyngeal
Resist rotational forces and hold teeth in inter-proximal contact
Sharp projection on the under surface of the temporal bone

44. What are the four main functions of deciduous teeth?
(free gingiva) surrounds the teeth
Mastication - aids in speech - influence facial structure - chewing surfaces
32
Portion of the root seen in the oral cavity

45. Soft Palate
Covers muscle tissue in the posterior portion of the palate
Drains the Pterygoid plexus of the veins
Supplies blood to the face and oral cavity
Forming organ takes shape and resembles the shape of a bell

46. Rami
Two vertical extensions of the mandible
Located in a depressed area between the pillars
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
The development of different cells

47. Alveolus
Triferacated
Forms into dentin - cementum and pulp of the teeth
Bone that surrounds the root of the tooth
Circle and tighten the gingival margin around the neck of the tooth

48. Sublingual Glands
Forms the remaining 2/3 of the hard and soft palate uvula
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
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
6 years old

49. Interdental Septum
A bony projection that separates each socket
(free gingiva) surrounds the teeth
Substances between cells
Excess dryness of the mouth

50. Retromolar Area
Pointed or rounded mounds on the crown of the tooth
Used to pulverize food
A triangular area located behind the last molar
Rounded depression on a tooth