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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. Alveologingival Fiber Groups
Synovial fluid
Dividing point of a multi-rooted tooth
Opening for the ear
Aid in attaching the gingiva to the alveolar bone

2. Lesser Palatine Nerve
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Portion of the lips where the skin meets the vermilion zone
Smaller branch that ennervates the soft palate uvula and tonsils
Quarters of the teeth

3. Palatine Bones
Joined at the midline and are often referred to as the median Palatine suture
Buccal - lingual - and inferior alveolar
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Two weeks thru 8th week

4. Alveolar Crest
Circle and tighten the gingival margin around the neck of the tooth
The internal surface at the center of the mandible
Two cortical bone plates that come together between each tooth
Composed of mucosa and surrounds the necks of the teeth

5. What teeth do the deciduous (baby) tooth not include?
2 to 3 pints
Used to pulverize food
No bicuspids/ no 3rd molars
An enclosed area that matures into dentin - cementum and pulp

6. Transverse Ridge
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Functions the same as the alveolar cfg; originate in alveolar bone
Three bulges on the incisal edge
The portion of the tooth that meets the gingiva

7. Convects
Curve outward
Formed by the fibroblast cells and secures the tooth in the socket
Assist in depressing the mandible and elevating the tongue
The fixed attachment of a muscle

8. Which molar contains the cusp of Caribelli?
Divides the crown and the root
Wings of the sphenoid bone
Cluster of tissue that manufactures and secrets fluid
Maxillary first molar

9. Glenoid Fossa
Mastication - aids in speech - influence facial structure - chewing surfaces
Opening for the ear
Wearing away of the incisal or occlusal surfaces of the tooth
Oval depression of temporal bone in condyloid process

10. Maxilla
Acts as anchors between the alveolar bone and the tooth
Conception thru the first two weeks
Largest facial bone with two sections joined at the median suture
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11. Alveolar Crest Fiber Group
Drains the superficial veins of the face and neck into the subclavian vein
Excess bone formations under the tongue on the alvellar bone
Initiation of the tooth begins
Function to resist rotational forces and tilting

12. Anatomical root
The development of different tissues
6 months/3years
Portion covered with cementum
Bony projection found on the bottom border of the temporal bone

13. Maxillary Artery
A shallow v-shaped depression located below the bottom of the nose and above the lips
Inner portion of the enamel rod
The ridges that run horizontally across the hard palate behind the incisive papilla
Largest of the branches of the external carotid artery; supplies facial structure

14. Function of Platysma
The area on the crown of the tooth that is nearest the gingival
Two cortical bone plates that come together between each tooth
Draws down the mandible and corners of the mouth
A line that represents the alveolus bone lining the socket

15. Nasmyths Membrane
The mandibular molars
Covering over the enamel that is left over from the epithelium ameloblasts
Creates the wall of the dentinal tubule
Study of prenatal growth and the developing process of an individual

16. What are the 4 taste senses and where are they located?
Largest of the branches of the external carotid artery; supplies facial structure
Where the ectoderm layer matures into the enamel
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
An extension of an unattached gingiva and the tooth

17. Apical Fiber Group
Resists forces that try to pull the tooth outward
2 to 3 pints
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Orbicularis oris - buccinator - mentalis - zygomatic major

18. Labial Commissures
Corners of the mouth
Wearing away of the incisal or occlusal surfaces of the tooth
Upper arch of the teeth
The development of different tissues

19. Infraorbital Foramen
Forms into the inner lining of the oral cavitiy and enamel of the teeth
To bulge of curve outward
Opening in the mouth below the orbit on the maxillary bone
Substances between cells

20. Papilla
Small raised projections where taste buds are located
A line of tissue that extends from the tongue to the floor of the mouth
Intervating the anterior teeth and the labial gingiva
Healthy gingival tissue with an orange texture

21. Facial Artery
Located on the inside of the body of the ramus
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
Chewing and swallowing food
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

22. Posterior Superior Alveolar Nerve
Act to maintain the gingival integrity of the marginal gingiva
Surface towards the midline
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
A line that represents the alveolus bone lining the socket

23. Nasal-Labial Groove
A faint line going from the ala of the nose to the corner of the mouth
The disc becomes displaced
The fixed attachment of a muscle
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct

24. Mastoid process
Small bony projections surrounding the lingual foramen
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Folds of tissue to the the lingual veins
Bony projection found on the bottom border of the temporal bone

25. How much saliva do the salivary glands produce in 24 hours?
The outer edge of the nostril
Glands the size of a walnut that lie on the inside of the mandible and empty saliva into the mouth thru the Wharton's duct
2 to 3 pints
Pointed elongations of the pulp

26. Central Incisor
Short tubules that seem to crossover to the enamel
Middle two teeth in the mouth
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Drains the floor of the mouth

27. Buccal Mucosa
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Outside surface Which is towards the cheek - on posterior teeth
The inner surface of the cheeks
Resists forces that try to pull the tooth outward

28. How many cusps/ roots do the 2/3rd mandibular molars have?
Ligaments and muscles of mastication
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
4 cusps/ bifurcated
A dense tissue covered with mucous membrane that can withstand chewing

29. Circumvallate Papillae
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Arteries supplying blood to most of the head and the neck
Small curved lines that run parellel to the CEJ
Tissue covering the alveolar processes

30. Palantine Tonsils
Corners of the mouth
Located in a depressed area between the pillars
Raised vertical folds of tissue on the lateral border of the tongue
Where the proximal sides of two teeth come together and touch

31. How many roots/ cusps does the mandibular first molar have?
Follows the length of the body of the mandible past the last tooth and up to the ramus
Bifurcated/ 5 cusps
Formed by the uniting of lobes during development of crown
The development of different tissues

32. Odontoblast
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
Cells that form dentin
Small linear depression
Extends from the mucogingival junction to the gingival groove

33. Palatine Raphe
Outside surface Which is towards the lips
The slightly raised line extending down the middle of the hard palate
9 months (5 months ultrasound to tell sex)
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

34. What are the 12 landmarks of the oral cavity?

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35. Dentinal Hypersensitivity
When the dentin is exposed
A period of both primary teeth and permeant teeth are in the dentition
The inner surface of the lips
Found only in multi-rooted teeth and resists rotational forces

36. Interdental Gingiva
Supplies blood to the roots and periodontal ligaments of the interior teeth
Mastication - aids in speech - influence facial structure - chewing surfaces
An extension of an unattached gingiva and the tooth
Papillae that give the tongue the strawberry effect

37. What are the two ways the TMJs move?
Platysma - trapezius - sternocleidomastoid
Hinge motion and gliding movement
A projection that extends off the back of the soft palate
Where the proximal sides of two teeth come together and touch

38. Primary palate
Joined at the midline and are often referred to as the median Palatine suture
The fixed attachment of a muscle
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Separates the developing oral cavities from the nasal cavities

39. Gingival Hyperplasia
Largest of the branches of the external carotid artery; supplies facial structure
Causes a thickening of the cementum around the apex
Three cusps/ trifurcated
An overgrowth of the gingival tissue

40. What are the three muscles of the neck?
When the dentin is exposed
Platysma - trapezius - sternocleidomastoid
2 to 3 pints
Indented

41. External Auditory Meatus
Where the proximal sides of two teeth come together and touch
Opening for the ear
A condition where the lower frenum attachment is very short/DDS/frenectomy
Cells that form cementum

42. Mucogingival Junction
Orbicularis oris - buccinator - mentalis - zygomatic major
A line of demarcation between the attached gingiva and alveolar mucosa
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

43. Gums
Synovial fluid
Tissue covering the alveolar processes
Smaller branch that ennervates the soft palate uvula and tonsils
Peg shaped crown with a smooth surface

44. Lingual Frenum
A line of tissue that extends from the tongue to the floor of the mouth
Moves the head backward and laterally
Enamel forming cells
Disk that acts like a cushion between the temporal bone and the condyloid process

45. Meniscus
The inner surface of the cheeks
Occlusal surface of the posterior tooth
Disk that acts like a cushion between the temporal bone and the condyloid process
Forms after the completion of the apical foramen

46. Palatine Rugae
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Portion of the lips that are red
Where the proximal sides of two teeth come together and touch
The ridges that run horizontally across the hard palate behind the incisive papilla

47. What are the 4 extrinsic muscles of the tongue
Genioglossus - hyoglossus - styloglossus - palatoglossus
A condition where the lower frenum attachment is very short/DDS/frenectomy
Shed from the oral cavity
Formed by the uniting of lobes during development of crown

48. Middle Superior Alveolar Nerve
Occlusal surface of the posterior tooth
Pointed elongations of the pulp
To lubricate the oral cavity and to moisten food
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids

49. What are the extrinsic muscles of the tongue responsible for?
The groove below the lower lips that separates the lips from the chin
Acts as anchors between the alveolar bone and the tooth
Indented
Assist in the movement and functioning of the tongue

50. How many teeth are in the Primary teeth?
Week 11
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Bicuspids
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