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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. Cervical Third
The area on the crown of the tooth that is nearest the gingival
A dense tissue covered with mucous membrane that can withstand chewing
Dividing point of a multi-rooted tooth
Week 11

2. Symphysis
Cells that form dentin
Divides the crown and the root
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
10 days

3. Concave
Largest of the branches of the external carotid artery; supplies facial structure
Maxillary third molar
Indented
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

4. Enamel Lamellae
Narrow long enamel tuft
Small curved lines that run parellel to the CEJ
12 years
Assists in elevating the chin

5. What are the only permeant teeth that are not succedaneous?
Molars
9 weeks thru birth
Of or pertaining to area surrounding naval cavity
(free gingiva) surrounds the teeth

6. Gingival Hyperplasia
Inner portion of the enamel rod
Extends from the mucogingival junction to the gingival groove
Peg shaped crown with a smooth surface
An overgrowth of the gingival tissue

7. Mental Nerve Branch
Third tooth from the midline
When the surface of the teeth becomes grooved
Largest division of the trigeminal nerve
The area on the crown of the tooth that is nearest the gingival

8. Embryology
Molaris meaning millstone
Study of prenatal growth and the developing process of an individual
Extends from the medial corner of the eye to the nasal cavity
Cells develop into different tissues

9. Gland
Cluster of tissue that manufactures and secrets fluid
Calcified masses of dentin
6 years old
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids

10. Sublingual Glands
Largest division of the trigeminal nerve
Enamel forming cells
Narrow long enamel tuft
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

11. Fungiform Papillae
Papillae that give the tongue the strawberry effect
Incremental line indicating trauma of birth
Demonstrates a disturbance in the body metabolism
Bony projection found on the bottom border of the temporal bone

12. What are the 3 branches of the pterygopalatine nerve branch?
The deepest point of the vestibule
Greater - lesser - naso palatine nerves
Supplies blood to the roots and periodontal ligaments of the molars and premolars
A projection that extends off the back of the soft palate

13. Marginal Ridges
Elevated are of enamel that forms the Mesial and distal borders
Orbicularis oris - buccinator - mentalis - zygomatic major
A small projection in the middle of the upper lip
Genioglossus - hyoglossus - styloglossus - palatoglossus

14. Buckle groove
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Inside surface Which is towards the tongue - on anterior teeth
A pocket formed by the soft tissue of cheeks and gingiva
Functions the same as the alveolar cfg; originate in alveolar bone

15. Meniscus
Forms into dentin - cementum and pulp of the teeth
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Disk that acts like a cushion between the temporal bone and the condyloid process
Supplies blood to the roots and periodontal ligaments of the interior teeth

16. External Carotid Artery
Supplies blood to the face and oral cavity
Mucosa that covers the alveolar bone
Small dark brushes
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

17. Nasolacrimal groove
Extends from the medial corner of the eye to the nasal cavity
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Middle line of the teeth
A line of tissue that extends from the tongue to the floor of the mouth

18. Palatine Bones
Joined at the midline and are often referred to as the median Palatine suture
20
Radiates from the developmental groove
Occurs in unusual ways and distorted crowns may appear

19. Midline
Middle line of the teeth
Assist in the movement and functioning of the tongue
Cells that form dentin
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

20. Lamina Dura
A line that represents the alveolus bone lining the socket
Quarters of the teeth
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Small raised projections where taste buds are located

21. Labial Mucosa
Of or pertaining to area surrounding naval cavity
The inner surface of the lips
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Triangular space in the gingival direction when two adjacent teeth are in contact

22. Uvula
Supplies blood to the roots and periodontal ligaments of the interior teeth
A projection that extends off the back of the soft palate
Opening for the ear
The portion of the tooth that meets the gingiva

23. Lingual Foramen
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Teeth after cuspids
The internal surface at the center of the mandible
Intervating the anterior teeth and the labial gingiva

24. Interdental Septum
Forms into dentin - cementum and pulp of the teeth
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
A bony projection that separates each socket
A line that represents the alveolus bone lining the socket

25. Common Carotid
Elevates the posterior portion of the tongue and narrows the fauces
Found only in multi-rooted teeth and resists rotational forces
Lift the hyoid bone and assist in opening the mouth
Arteries supplying blood to most of the head and the neck

26. Tubercle of the Lip
Mandibular central incisors
Triangular space in the gingival direction when two adjacent teeth are in contact
9 weeks thru birth
A small projection in the middle of the upper lip

27. Sublingual Sulcus
Oval structures that are located on the dorsal surface of the tongue
Developmental segment of a tooth
A horseshoe shaped groove that follow the curve of the dental arch
Scroll like bones outside the nasal cavaties

28. What are the 4 muscles of the floor of the mouth?
Located behind the ramus of the mandible and branches into five arteries
Digstric - Mylohyoid - stylohyoid - geniohyoid
Creates the wall of the dentinal tubule
Peg shaped crown with a smooth surface

29. Fetal Alcohol Syndrome symptons
Pulverizing or chewing surface
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Small head - low nasal bridge - thin upper lip - small mandible
The inner surface of the lips

30. Styloid Process
Sharp projection on the under surface of the temporal bone
A flap of tissue on the on the buccal mucosa
Extends from the medial corner of the eye to the nasal cavity
Cut - tear - and grind food

31. What is the most common problem with TMJ
Extreme variations from the norm
The disc becomes displaced
Three cusps/ trifurcated
Tissue fluid surrounding the cell membrane of the odontoblast

32. Cuspid
Third tooth from the midline
Secrete saliva to assist in process of digestion
Middle two teeth in the mouth
Allow flexibility during mastication - speech

33. Incisive Arteries
Short tubules that seem to crossover to the enamel
Supplies blood to the roots and periodontal ligaments of the interior teeth
Excess bone in the middle of the palate
The area on the crown of the tooth that is nearest the gingival

34. Mylohyoid Nerve Branch
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
The fixed attachment of a muscle
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
When the tissue becomes inflamed

35. Buccal
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Elevates the posterior portion of the tongue and narrows the fauces
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Outside surface Which is towards the cheek - on posterior teeth

36. Ridge
Smaller branch that ennervates the soft palate uvula and tonsils
Supportive fibers that anchor the tooth to the bone
To dissolve
Linear elevation of the tooth

37. Mesoderm
Forms into dentin - cementum and pulp of the teeth
Tooth emerges from gum tissue and becomes visible
Raised vertical folds of tissue on the lateral border of the tongue
A projection that extends off the back of the soft palate

38. Alveolar Mucosa
Appears to be loosely attached - covering the alveolar bone.
To lubricate the oral cavity and to moisten food
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Supplies blood to the roots and periodontal ligaments of the interior teeth

39. Embryo
Tubules that pass through the entire surface of the dentin
Cells develop into different tissues
Two weeks thru 8th week
To dissolve

40. Incisal third
The area on the crown of the tooth that is nearest the gingival
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Enamel forming cells
Mastication - aids in speech - influence facial structure - chewing surfaces

41. Mesenchyme Tissue
Molars
The slightly raised line extending down the middle of the hard palate
A faint line going from the ala of the nose to the corner of the mouth
Primary embryonic mesoderm layer that develops during the morpho differentiation period

42. Epithelial Attachment
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Elevates the posterior portion of the tongue and narrows the fauces
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Papillae that give the tongue the strawberry effect

43. Greater Palatine Nerve
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Resists forces that try to pull the tooth outward
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Drains the floor of the mouth

44. Saliva
Separation of the upper lip ( 1 of 1000 live births)
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Shed from the oral cavity
Clear fluid secreted by the salivary and mucous glands throughout the mouth

45. TMJ bones are bathed In what solution?
The mandibular first premolar
Primary and permanent
Synovial fluid
Two

46. Muscle Insertion
Maxillary third molar
The moveable attachment of the muscle
Small dark brushes
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

47. Anterior Tonsillar Pillar
Forms into dentin - cementum and pulp of the teeth
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Creates the wall of the dentinal tubule
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

48. What are the characteristics of deciduous teeth?
4th week
Narrow long enamel tuft
Drains the Pterygoid plexus of the veins
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

49. When do the tooth buds appear?
When the tissue becomes inflamed
Compact bone plate of the facial and lingual surfaces
Week 11
The teeth located at the back of the mouth

50. Enamel Dysplasia
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Growth from the oral epithelium that gives rise to the tooth buds
When the surface of the teeth becomes grooved
Forms the remaining 2/3 of the hard and soft palate uvula