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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. Retromolar Area
The deepest point of the vestibule
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
A triangular area located behind the last molar
10 days

2. Gingiva
Composed of mucosa and surrounds the necks of the teeth
Scroll like bones outside the nasal cavaties
The slightly raised line extending down the middle of the hard palate
Primitive mouth

3. Anterior Alveolar Nerve
Assists in elevating the chin
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
The slightly raised line extending down the middle of the hard palate
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

4. How is the TMJ supported and what controls their movement?
Ligaments and muscles of mastication
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
The gingiva in the floor of the gingival sulcus that attaches to the enamel

5. Alveolar Crest
Two cortical bone plates that come together between each tooth
The inner surface of the cheeks
Initiation of the tooth begins
Inner portion of the enamel rod

6. What is the longest tooth in the mandibular arch?
The inner surface of the cheeks
Upper arch of the teeth
Responsible for laying down the enamel matrix into place
The mandibular first premolar

7. What are the four main functions of deciduous teeth?
Inner portion of the enamel rod
Mastication - aids in speech - influence facial structure - chewing surfaces
Creates the wall of the dentinal tubule
Indented

8. Labial Commissures
Radiates from the developmental groove
A condition where the lower frenum attachment is very short/DDS/frenectomy
Corners of the mouth
Cheek bones--the most breakable bone in the body

9. Cleft Lip
A line of tissue that extends from the tongue to the floor of the mouth
The largest of the salivary glands which lie just below and in front of the ear
Separation of the upper lip ( 1 of 1000 live births)
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

10. Lingual Vein
Respiratory system - digestive system and glandular organs
Drains the floor of the mouth
Band of fibrous tissue which attaches bone to bone
2 to 3 pints

11. Dentinal Fluid
Inside of the maxillary teeth
Papillae that give the tongue the strawberry effect
Largest division of the trigeminal nerve
Tissue fluid surrounding the cell membrane of the odontoblast

12. What are the three muscles of the neck?
Functions the same as the alveolar cfg; originate in alveolar bone
Platysma - trapezius - sternocleidomastoid
Drains the superficial veins of the face and neck into the subclavian vein
Oval structures that are located on the dorsal surface of the tongue

13. TMJ bones are bathed In what solution?
Synovial fluid
Developmental segment of a tooth
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Papillae that give the tongue the strawberry effect

14. Central Incisor
Middle two teeth in the mouth
2 small raised folds of tissue where the lingual frenum attaches
Maxillary third molar
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

15. Groove
Forms after the completion of the apical foramen
Small linear depression
Opening for the ear
Palatoglossus - palatopharyngeal

16. Lamina Dura
The mandibular molars
Incremental lines around the layers of the enamel matrix
A line that represents the alveolus bone lining the socket
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

17. Histo Differentiation
A period of both primary teeth and permeant teeth are in the dentition
Cells develop into different tissues
Extends from the mucogingival junction to the gingival groove
Outside surface Which is towards the cheek - on posterior teeth

18. Resonance
Constricts the nasopharyngeal passage and elevates the larynx
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Full deep rich sound in nasal cavity
A line that represents the alveolus bone lining the socket

19. What are the 4 extrinsic muscles of the tongue
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Genioglossus - hyoglossus - styloglossus - palatoglossus
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
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

20. Lacrimal Bones
Assists in elevating the chin
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Hinge motion and gliding movement

21. Morpho differentiation
Genioglossus - hyoglossus - styloglossus - palatoglossus
Incremental lines around the layers of the enamel matrix
The development of different forms
Folds of tissue to the the lingual veins

22. Torus Mandibularis
A junction or center of veins that directly or indirectly drain a vast area
Folds of tissue to the the lingual veins
Permeante teeth replace the primary teeth
Excess bone formations under the tongue on the alvellar bone

23. Alveolus
Wings of the sphenoid bone
A pocket formed by the soft tissue of cheeks and gingiva
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Bone that surrounds the root of the tooth

24. Dental Arteries
Drains the superficial veins of the face and neck into the subclavian vein
Layers of tooth tissue become calcified
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Vertical groove on the midline of the upper lip

25. Palatine Bones
Primary and permanent
Joined at the midline and are often referred to as the median Palatine suture
To dissolve
Cells that form cementum

26. What are the four major muscles of facial expression
What divides the tongue in half and runs from the base to the tip of the tongue
Opening in the mouth below the orbit on the maxillary bone
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
Orbicularis oris - buccinator - mentalis - zygomatic major

27. Lingual Foramen
Assist in depressing the mandible and elevating the tongue
The corners of the mouth where the top and bottom lip meet
The internal surface at the center of the mandible
Indented

28. Xerostomia
Excess dryness of the mouth
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Bi-cuspids
Two weeks thru 8th week

29. Maxillary Tuberosity
The connective tissue of the marginal gingiva
A rounded area beyond the last posterior maxillary tooth
Forming organ takes shape and resembles the shape of a bell
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

30. Embryo
Two weeks thru 8th week
The study of the microscopic structure and functions of tissues
Mildest form of cleft palate
The gingiva in the floor of the gingival sulcus that attaches to the enamel

31. Horizontal Fiber Group
The inner surface of the lips
Small grooves noted on some teeth
Functions the same as the alveolar cfg; originate in alveolar bone
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

32. Tome's process
Responsible for laying down the enamel matrix into place
Of or pertaining to area surrounding naval cavity
A condition where the lower frenum attachment is very short/DDS/frenectomy
The inner surface of the cheeks

33. Dentinal Hypersensitivity
When the dentin is exposed
9 weeks thru birth
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

34. Facial development
4th week
A projection that extends off the back of the soft palate
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
Creates the wall of the dentinal tubule

35. Clinical root
Portion of the root seen in the oral cavity
Permeante teeth replace the primary teeth
The disc becomes displaced
Supplies blood to the face and oral cavity

36. Facial Vein
Drains the facial structures beginning near the eye and descending toward the mandible
Biting edge of the teeth
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Ligaments and muscles of mastication

37. Concave
Wings of the sphenoid bone
Indented
Tissue covering the alveolar processes
Forms a large cavity above the roots of the maxillary molars

38. Peritubular Dentin
The study of the microscopic structure and functions of tissues
Arteries supplying blood to most of the head and the neck
Creates the wall of the dentinal tubule
The portion of the tooth that meets the gingiva

39. Lobes
Developmental segment of a tooth
Largest division of the trigeminal nerve
Located in a depressed area between the pillars
Supplies blood to the brain and the eyes

40. Labial
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Outside surface Which is towards the lips
Full deep rich sound in nasal cavity
Quarters of the teeth

41. Mastoid process
Bony projection found on the bottom border of the temporal bone
Follows the inside of the ramus and the body of the mandible
Located behind the ramus of the mandible and branches into five arteries
Platysma - trapezius - sternocleidomastoid

42. Caruncle
Drains the superficial veins of the face and neck into the subclavian vein
Fleshy elevation under the tongue
Mucosa that covers the alveolar bone
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

43. Maxillary Artery
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Largest of the branches of the external carotid artery; supplies facial structure
Wings of the sphenoid bone
9 months (5 months ultrasound to tell sex)

44. Stenson's Duct
Intervating the anterior teeth and the labial gingiva
Duct located on the parotid papilla
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Largest division of the trigeminal nerve

45. Duct
Maxillary third molar
Canal or passage for fluid
Assists in elevating the chin
Cluster of tissue that manufactures and secrets fluid

46. Frenum
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Inside of the maxillary teeth
6 years old

47. Greater Palatine Foramen
The largest of three openings located in the posterior region of the hard palate
Permeante teeth replace the primary teeth
6 years old
Palatoglossus - palatopharyngeal

48. Tendon
Corners of the mouth
Band of fibrous tissue which attaches muscle to bone
The slightly raised line extending down the middle of the hard palate
The space between the unattached gingiva and the tooth

49. Triangular Ridge
4 cusps/ bifurcated
Disk that acts like a cushion between the temporal bone and the condyloid process
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

50. Morpho Differentiation
Extends from the medial corner of the eye to the nasal cavity
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Forming organ takes shape and resembles the shape of a bell
Sharp projection on the under surface of the temporal bone