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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. Posterior Teeth
Primary and permanent
Calcium salts are deposited into formed tooth
A dense tissue covered with mucous membrane that can withstand chewing
The teeth located at the back of the mouth

2. Mesenchyme Tissue
Stained growth rings in dentin
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Assist in the movement and functioning of the tongue

3. Palatine Raphe
Set of arches found farther in the back of the throat
The slightly raised line extending down the middle of the hard palate
Supplies blood to the face and oral cavity
Supplies blood to the roots and periodontal ligaments of the molars and premolars

4. Interradical Fiber Group
Assist in the movement and functioning of the tongue
The development of different cells
Forms after the completion of the apical foramen
Found only in multi-rooted teeth and resists rotational forces

5. Sphenoid
A bat shaped bone which forms the anterior portion of the skull
Compact bone plate of the facial and lingual surfaces
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
A flap of tissue on the on the buccal mucosa

6. Median Sulcus
Surface towards the midline
What divides the tongue in half and runs from the base to the tip of the tongue
Fleshy elevation under the tongue
Vertical groove on the midline of the upper lip

7. Morpho differentiation
The development of different forms
Where the ectoderm layer matures into the enamel
Pulls the hyoid bone and the tongue anteriorly
A line of demarcation between the attached gingiva and alveolar mucosa

8. Alveolar Crest Fiber Group
A bat shaped bone which forms the anterior portion of the skull
Function to resist rotational forces and tilting
Wings of the sphenoid bone
Draws the hyoid bone superiorly and posteriorly and stabilizes it

9. Alveolar Crest
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Two cortical bone plates that come together between each tooth
To dissolve
Largest division of the trigeminal nerve

10. Sublingual Glands
Primitive mouth
Supplies blood to the roots and periodontal ligaments of the interior teeth
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
Small grooves noted on some teeth

11. Pulp Stones
Calcified masses of dentin
A bony projection that separates each socket
Two
The largest of three openings located in the posterior region of the hard palate

12. Cleft Palate
Bicuspids
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Small dark brushes

13. Where is the palate located?
Moves the head backward and laterally
Forms the remaining 2/3 of the hard and soft palate uvula
Pointed or rounded mounds on the crown of the tooth
Inside of the maxillary teeth

14. Parotid glands
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Corners of the mouth
Study of prenatal growth and the developing process of an individual
The largest of the salivary glands which lie just below and in front of the ear

15. Lingual
Dentin found between the tubules
Origin - fixed point - insertion - movable point
Inside surface Which is towards the tongue - on anterior teeth
When the tissue becomes inflamed

16. Attrition
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Study of the structure and form of the teeth
Wearing away of the incisal or occlusal surfaces of the tooth
Used to pulverize food

17. Nasolacrimal groove
Supplies blood to the roots and periodontal ligaments of the interior teeth
An enclosed area that matures into dentin - cementum and pulp
Extends from the medial corner of the eye to the nasal cavity
Resists forces that try to pull the tooth outward

18. Circular Ligament Fiber Groups
Circle and tighten the gingival margin around the neck of the tooth
A triangular area located behind the last molar
Short tubules that seem to crossover to the enamel
4 cusps/ bifurcated

19. Cortical Bone
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Compact bone plate of the facial and lingual surfaces
Folds of tissue to the the lingual veins

20. Mantle Dentin
Opening for the ear
The first predentin that is formed and matures within the tube
A faint line going from the ala of the nose to the corner of the mouth
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids

21. What is the maxillary cuspid known as?
Three cusps/ trifurcated
Genioglossus - hyoglossus - styloglossus - palatoglossus
Mucosa that covers the alveolar bone
The cornerstone of the mouth

22. Enamel Dysplasia
The development of different forms
When the surface of the teeth becomes grooved
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Resulting from an imperfect union where the lobes come together

23. Gingival Hyperplasia
Stained growth rings in dentin
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Permeante teeth replace the primary teeth
An overgrowth of the gingival tissue

24. Soft Palate
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Covers muscle tissue in the posterior portion of the palate
Oval depression of temporal bone in condyloid process
Resist rotational forces and hold teeth in inter-proximal contact

25. Primary Dentin
Largest of the branches of the external carotid artery; supplies facial structure
Forms the bulk of the tooth
Teeth will not erupt in proper position
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

26. Function of Styloglossus
Retracts the tongue and raises the tip of the tongue
2 to 3 pints
Separation of the upper lip ( 1 of 1000 live births)
Bluish veins that run the length of the tongue

27. Muscle origine
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
Forms the remaining 2/3 of the hard and soft palate uvula
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
The fixed attachment of a muscle

28. When does the maxillary second molar erupt?
Formed by the fibroblast cells and secures the tooth in the socket
12 years
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
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

29. Gingiva
Composed of mucosa and surrounds the necks of the teeth
A line that represents the alveolus bone lining the socket
Teeth will not erupt in proper position
Smaller branch that ennervates the soft palate uvula and tonsils

30. Ligament
Band of fibrous tissue which attaches bone to bone
The deepest point of the vestibule
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Study of the structure and form of the teeth

31. Anatomical root
Portion covered with cementum
Drains the Pterygoid plexus of the veins
Bony projection found on the bottom border of the temporal bone
Set of arches found farther in the back of the throat

32. When do oral and nasal cavity separate and palate develop?
Initiation of the tooth begins
Intervating the anterior teeth and the labial gingiva
The mandibular molars
Week 12

33. Palatine Rugae
Formed by the fibroblast cells and secures the tooth in the socket
2 to 3 pints
The ridges that run horizontally across the hard palate behind the incisive papilla
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

34. Foliate Papillae
Depresses the tongue
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Canal or passage for fluid
Raised vertical folds of tissue on the lateral border of the tongue

35. Genial Tubercles
Cells that form cementum
Trigeminal nerve--because it ennervates the maxilla and the mandible
32
Small bony projections surrounding the lingual foramen

36. Retromolar Area
Bicuspids
A triangular area located behind the last molar
Outside surface Which is towards the cheek - on posterior teeth
Week 11

37. Sublingual Caruncles
2 small raised folds of tissue where the lingual frenum attaches
The inner surface of the lips
When the dentin is exposed
Permeante teeth replace the primary teeth

38. Salivary Glands
Secrete saliva to assist in process of digestion
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Lining covers inside of the oral cavity
Duct located on the parotid papilla

39. Midline
Middle line of the teeth
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Cells that form cementum
Pointed elongations of the pulp

40. When do the primary teeth begin erupting and are fully erupted?
When the dentin is exposed
6 months/3years
Portion of the root seen in the oral cavity
Drains the floor of the mouth

41. Greater Palatine Nerve
Bicuspids
Buccal - lingual - and inferior alveolar
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

42. Alveolar Mucosa
Synovial fluid
Appears to be loosely attached - covering the alveolar bone.
Occlusal surface of the posterior tooth
Lift the hyoid bone and assist in opening the mouth

43. Mamelons
Three bulges on the incisal edge
Synovial fluid
Drains the maxiallary artery and superficial temporal arteries
Bi-cuspids

44. Tendon
Indented
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Pointed or rounded mounds on the crown of the tooth
Band of fibrous tissue which attaches muscle to bone

45. Contact Area
Where the proximal sides of two teeth come together and touch
Narrow long enamel tuft
A line that represents the alveolus bone lining the socket
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

46. Saliva
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Maxillary third molar

47. Xerostomia
Drains the floor of the mouth
Excess dryness of the mouth
Lower arch of the teeth
Initiation of the tooth begins

48. Labial Mucosa
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
The inner surface of the lips
Palatoglossus - palatopharyngeal

49. What kind of root does the maxillary first molar have?
A faint line going from the ala of the nose to the corner of the mouth
Joined at the midline and are often referred to as the median Palatine suture
Triferacated
No bicuspids/ no 3rd molars

50. Peritubular Dentin
A line of tissue that extends from the tongue to the floor of the mouth
Creates the wall of the dentinal tubule
Allow flexibility during mastication - speech
Wings of the sphenoid bone