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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. Gland
Portion of the root seen in the oral cavity
Extends from the mucogingival junction to the gingival groove
Cluster of tissue that manufactures and secrets fluid
The ridges that run horizontally across the hard palate behind the incisive papilla

2. Function of Palatopharyngeal
The largest of three openings located in the posterior region of the hard palate
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Constricts the nasopharyngeal passage and elevates the larynx
Genioglossus - hyoglossus - styloglossus - palatoglossus

3. What is the purpose of permanent teeth?
Layers of tooth tissue become calcified
20
Cut - tear - and grind food
Middle two teeth in the mouth

4. Bud stage
Initiation of the tooth begins
Ligaments and muscles of mastication
Small grooves noted on some teeth
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

5. Convects
A dense tissue covered with mucous membrane that can withstand chewing
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Curve outward

6. What is the smallest tooth in dentition?
Inside surface Which is towards the tongue - on anterior teeth
Pointed elongations of the pulp
Pointed or rounded mounds on the crown of the tooth
Mandibular central incisors

7. Torus
A dense tissue covered with mucous membrane that can withstand chewing
4th week
Excess bone in the middle of the palate
A faint line going from the ala of the nose to the corner of the mouth

8. Occlusal
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Pulverizing or chewing surface
6 years old
The largest of the salivary glands which lie just below and in front of the ear

9. Mesenchyme Tissue
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Full deep rich sound in nasal cavity
Scroll like bones outside the nasal cavaties
Largest facial bone with two sections joined at the median suture

10. What are the characteristics of deciduous teeth?
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Inner portion of the enamel rod
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

11. External Carotid Artery
Quarters of the teeth
Ligaments and muscles of mastication
Shed from the oral cavity
Supplies blood to the face and oral cavity

12. Dentinal Hypersensitivity
When the dentin is exposed
Trigeminal nerve--because it ennervates the maxilla and the mandible
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

13. Incisive Arteries
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Developmental segment of a tooth
Supplies blood to the roots and periodontal ligaments of the interior teeth
A projection that extends off the back of the soft palate

14. Tubercle of the Lip
Two
A small projection in the middle of the upper lip
Maxillary third molar
Assist in depressing the mandible and elevating the tongue

15. Proliferation
H20 - mucin - organic salts and digestive enzymes
A bat shaped bone which forms the anterior portion of the skull
Where the ectoderm layer matures into the enamel
Moves the head backward and laterally

16. Eruption
The line of demarcation between the attached gingiva and the marginal gingiva
Tooth emerges from gum tissue and becomes visible
Responsible for laying down the enamel matrix into place
Inner portion of the enamel rod

17. What are the eight landmarks of the face?
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
Papillae that give the tongue the strawberry effect
A dense tissue covered with mucous membrane that can withstand chewing
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

18. What is the latin word for molar?
Molaris meaning millstone
Sharp projection on the under surface of the temporal bone
Looking at the border of the tongue
Forms a large cavity above the roots of the maxillary molars

19. Lacrimal Bones
Genioglossus - hyoglossus - styloglossus - palatoglossus
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

20. Ligament
Bony projection found on the bottom border of the temporal bone
No bicuspids/ no 3rd molars
Band of fibrous tissue which attaches bone to bone
Pulls the hyoid bone and the tongue anteriorly

21. Gingiva
A dense tissue covered with mucous membrane that can withstand chewing
Creates the wall of the dentinal tubule
Cells that form dentin
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

22. Internal Jugular Vein
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Lining covers inside of the oral cavity
The teeth located at the back of the mouth

23. Soft Palate
Set of arches found farther in the back of the throat
Covers muscle tissue in the posterior portion of the palate
When cells rapidly increase in number
Dentin found between the tubules

24. Nasmyths Membrane
1500 millimeters
Interdental ligament
Secrete saliva to assist in process of digestion
Covering over the enamel that is left over from the epithelium ameloblasts

25. What are the 4 muscles of the floor of the mouth?
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Band of fibrous tissue which attaches bone to bone
Digstric - Mylohyoid - stylohyoid - geniohyoid

26. Pterygoid Process
Upper arch of the teeth
Indented
Lift the hyoid bone and assist in opening the mouth
Wings of the sphenoid bone

27. Enamel Tufts
Band of fibrous tissue which attaches muscle to bone
Small dark brushes
The largest of the salivary glands which lie just below and in front of the ear
Extreme variations from the norm

28. Incisive Nerve branch
Pulverizing or chewing surface
Function to resist rotational forces and tilting
Intervating the anterior teeth and the labial gingiva
Primary and permanent

29. Sublingual Caruncles
2 small raised folds of tissue where the lingual frenum attaches
Opening in the mouth below the orbit on the maxillary bone
Portion of the lips where the skin meets the vermilion zone
Hinge motion and gliding movement

30. Uvula
A rounded area beyond the last posterior maxillary tooth
Week 12
A projection that extends off the back of the soft palate
Small grooves noted on some teeth

31. Gingival Groove
Respiratory system - digestive system and glandular organs
The ridges that run horizontally across the hard palate behind the incisive papilla
The line of demarcation between the attached gingiva and the marginal gingiva
Compact bone plate of the facial and lingual surfaces

32. Interdental Ligament Group
Resist rotational forces and hold teeth in inter-proximal contact
Chewing and swallowing food
Convex area on the lingual surface near gingiva
A small projection in the middle of the upper lip

33. Stippled
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Separates the developing oral cavities from the nasal cavities
Healthy gingival tissue with an orange texture
Vertical groove on the midline of the upper lip

34. How many cusps/ roots do the 2/3rd maxillary molars have?
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
The space between the unattached gingiva and the tooth
Upper arch of the teeth
Three cusps/ trifurcated

35. Buckle groove
Set of arches found farther in the back of the throat
Developmental segment of a tooth
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Circle and tighten the gingival margin around the neck of the tooth

36. Lingual Frenum
Origin - fixed point - insertion - movable point
Respiratory system - digestive system and glandular organs
A line of tissue that extends from the tongue to the floor of the mouth
Excess bone in the middle of the palate

37. Incisal Edge
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Supplies blood to the face and oral cavity
The slightly raised line extending down the middle of the hard palate
Biting edge of the teeth

38. Labial Commissures
Follows the inside of the ramus and the body of the mandible
Assists in elevating the chin
Initiation of the tooth begins
Corners of the mouth

39. Sublingual Glands
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
2 small raised folds of tissue where the lingual frenum attaches
Incremental lines around the layers of the enamel matrix
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

40. Supplemental Groove
Vertical groove on the midline of the upper lip
Radiates from the developmental groove
Upper arch of the teeth
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

41. Vestibule Fornix
Wearing away of the incisal or occlusal surfaces of the tooth
Teeth after cuspids
The deepest point of the vestibule
Middle two teeth in the mouth

42. What is the most common problem with TMJ
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
The disc becomes displaced
Trigeminal - facial - glossopharyngeal - hypoglossal
Greater - lesser - naso palatine nerves

43. Labial
Outside surface Which is towards the lips
Supplies blood to the roots and periodontal ligaments of the interior teeth
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

44. Fibroblasts
Act to maintain the gingival integrity of the marginal gingiva
Pointed or rounded mounds on the crown of the tooth
Cells From which connective tissue evolve
Excess dryness of the mouth

45. Interradicular Septum
Healthy gingival tissue with an orange texture
The line of demarcation between the attached gingiva and the marginal gingiva
The bone that separates the root on a tooth
Forms the bulk of the tooth

46. Interdental Septum
A bony projection that separates each socket
Where the ectoderm layer matures into the enamel
When the dentin is exposed
Oval structures that are located on the dorsal surface of the tongue

47. Glenoid Fossa
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Oval depression of temporal bone in condyloid process

48. Imbracation Lines
Small curved lines that run parellel to the CEJ
Where the ramus meets the body of the mandible on the outside border
The internal surface at the center of the mandible
Band of fibrous tissue which attaches muscle to bone

49. Sulingual Folds
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Resists intrusive forces that try to push the tooth inwards
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
The crown of the tooth that is nearest the incisal edge near the anterior tooth

50. Posterior Tonsillar Pillar
Trigeminal - facial - glossopharyngeal - hypoglossal
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Small curved lines that run parellel to the CEJ
Set of arches found farther in the back of the throat