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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. External Carotid Artery
Supplies blood to the face and oral cavity
4/5 cusps/ 3 roots
Two
Two vertical extensions of the mandible

2. Hypercementosis
Cheek bones--the most breakable bone in the body
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Causes a thickening of the cementum around the apex
Follows the inside of the ramus and the body of the mandible

3. Mesoderm
Forms into dentin - cementum and pulp of the teeth
A line of tissue that extends from the tongue to the floor of the mouth
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Forming organ takes shape and resembles the shape of a bell

4. Incisive Arteries
When the dentin is exposed
Supplies blood to the roots and periodontal ligaments of the interior teeth
Respiratory system - digestive system and glandular organs
Layers of tooth tissue become calcified

5. Pterygoid plexus of the veins
A junction or center of veins that directly or indirectly drain a vast area
The inner surface of the cheeks
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Three bulges on the incisal edge

6. Greater Palatine Nerve
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

7. What are the only permeant teeth that are not succedaneous?
Genioglossus - hyoglossus - styloglossus - palatoglossus
A condition where the lower frenum attachment is very short/DDS/frenectomy
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Molars

8. Central Incisor
An extension of an unattached gingiva and the tooth
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Small head - low nasal bridge - thin upper lip - small mandible
Middle two teeth in the mouth

9. What are the 4 pairs of muscles of mastication!
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Lift the hyoid bone and assist in opening the mouth
Causes a thickening of the cementum around the apex
Of or pertaining to area surrounding naval cavity

10. Cortical Bone
Three bulges on the incisal edge
Small curved lines that run parellel to the CEJ
Bi-cuspids
Compact bone plate of the facial and lingual surfaces

11. Develop Mental Groove
Teeth after cuspids
Formed by the uniting of lobes during development of crown
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Week 11

12. Horizontal Fiber Group
Functions the same as the alveolar cfg; originate in alveolar bone
Located in a depressed area between the pillars
Trigeminal nerve--because it ennervates the maxilla and the mandible
Resists forces that try to pull the tooth outward

13. Function of mylohyoid
When cells rapidly increase in number
Assist in depressing the mandible and elevating the tongue
12 years
The line of demarcation between the attached gingiva and the marginal gingiva

14. Concave
The mandibular first premolar
Three bulges on the incisal edge
Indented
The groove below the lower lips that separates the lips from the chin

15. Articular Disc
Raised vertical folds of tissue on the lateral border of the tongue
Respiratory system - digestive system and glandular organs
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 forms

16. Convects
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Curve outward
A small projection in the middle of the upper lip
Mucosa that covers the alveolar bone

17. Incisal third
Joined at the midline and are often referred to as the median Palatine suture
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Sharp projection on the under surface of the temporal bone
Bone that surrounds the root of the tooth

18. Mental Nerve Branch
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Week 11
Forming organ takes shape and resembles the shape of a bell
Largest division of the trigeminal nerve

19. Alveolar Crest Fiber Group
Growth from the oral epithelium that gives rise to the tooth buds
The area on the crown of the tooth that is nearest the gingival
Surface away from the midline
Function to resist rotational forces and tilting

20. Duct
Stained growth rings in dentin
Canal or passage for fluid
The teeth located at the back of the mouth
Occlusal surface of the posterior tooth

21. Anterior Tonsillar Pillar
A line of demarcation between the attached gingiva and alveolar mucosa
The internal surface at the center of the mandible
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Cells that form dentin

22. Foliate Papillae
Raised vertical folds of tissue on the lateral border of the tongue
Depresses the tongue
A line of tissue that extends from the tongue to the floor of the mouth
To lubricate the oral cavity and to moisten food

23. Odontal Fiber Groups
An enclosed area that matures into dentin - cementum and pulp
When cells rapidly increase in number
A line that represents the alveolus bone lining the socket
Allow flexibility during mastication - speech

24. Gingival Groove
The line of demarcation between the attached gingiva and the marginal gingiva
Week 11
Hinge motion and gliding movement
A bony projection that separates each socket

25. Xerostomia
Excess dryness of the mouth
Duct located on the parotid papilla
Located in a depressed area between the pillars
(free gingiva) surrounds the teeth

26. Vestibule Fornix
Two vertical extensions of the mandible
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
The deepest point of the vestibule
20

27. Labial
Outside surface Which is towards the lips
Bluish veins that run the length of the tongue
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

28. Lacrimal Bones
Teeth will not erupt in proper position
To lubricate the oral cavity and to moisten food
Short tubules that seem to crossover to the enamel
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

29. Lingual
Growth from the oral epithelium that gives rise to the tooth buds
Inside surface Which is towards the tongue - on anterior teeth
2 to 3 pints
A raised area of tissue laying behind the maxillary central incisors on the hard palate

30. Alveolus
Growth from the oral epithelium that gives rise to the tooth buds
Bone that surrounds the root of the tooth
Enamel is thinner - pulp chamber is smaller -
Dentin found between the tubules

31. Xygote
The slightly raised line extending down the middle of the hard palate
When cells rapidly increase in number
Incremental lines around the layers of the enamel matrix
Supplies blood to the brain and the eyes

32. Interdental Ligament Group
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
A flap of tissue on the on the buccal mucosa
The mandibular first premolar
Resist rotational forces and hold teeth in inter-proximal contact

33. Pterygoid Artery
Band of fibrous tissue which attaches bone to bone
A dense tissue covered with mucous membrane that can withstand chewing
Week 12
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

34. Imbracation Lines
A small projection in the middle of the upper lip
Small head - low nasal bridge - thin upper lip - small mandible
Synovial fluid
Small curved lines that run parellel to the CEJ

35. Parotid glands
Canal or passage for fluid
The inner surface of the cheeks
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
The largest of the salivary glands which lie just below and in front of the ear

36. Glenoid Fossa
Oval depression of temporal bone in condyloid process
A pocket formed by the soft tissue of cheeks and gingiva
Secrete saliva to assist in process of digestion
Inside surface Which is towards the tongue - on anterior teeth

37. Mastoid process
A bony projection that separates each socket
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Bony projection found on the bottom border of the temporal bone
Allow flexibility during mastication - speech

38. What is origin and What is insertion?
Inside surface Which is towards the tongue - on anterior teeth
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Origin - fixed point - insertion - movable point
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

39. Occlusion third
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Cells that form cementum
9 weeks thru birth
Occlusal surface of the posterior tooth

40. Enamel Dysplasia
Responsible for laying down the enamel matrix into place
A condition where the lower frenum attachment is very short/DDS/frenectomy
When the surface of the teeth becomes grooved
A shallow v-shaped depression located below the bottom of the nose and above the lips

41. Epithelial Attachment
Hinge motion and gliding movement
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
The gingiva in the floor of the gingival sulcus that attaches to the enamel
A faint line going from the ala of the nose to the corner of the mouth

42. Meniscus
Disk that acts like a cushion between the temporal bone and the condyloid process
Resist rotational forces and hold teeth in inter-proximal contact
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Two cortical bone plates that come together between each tooth

43. What are the 2 sets of teeth?
Follows the length of the body of the mandible past the last tooth and up to the ramus
Small curved lines that run parellel to the CEJ
Forms after the completion of the apical foramen
Primary and permanent

44. Vermilion Zone
Opening in the mouth below the orbit on the maxillary bone
Appears to be loosely attached - covering the alveolar bone.
Portion of the lips that are red
Three cusps/ trifurcated

45. Anatomical root
Small grooves noted on some teeth
Portion covered with cementum
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Maxillary first molar

46. Circular Ligament Fiber Groups
Raised vertical folds of tissue on the lateral border of the tongue
Circle and tighten the gingival margin around the neck of the tooth
The connective tissue of the marginal gingiva
9 weeks thru birth

47. Cusps
Pointed or rounded mounds on the crown of the tooth
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Scroll like bones outside the nasal cavaties
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

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

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49. Function of Digastric
Set of arches found farther in the back of the throat
Lift the hyoid bone and assist in opening the mouth
Located in a depressed area between the pillars
Demonstrates a disturbance in the body metabolism

50. What is the most common problem with TMJ
The disc becomes displaced
Three bulges on the incisal edge
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Origin of the tooth