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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. Cyto differentiation
The development of different cells
Lift the hyoid bone and assist in opening the mouth
Separates the developing oral cavities from the nasal cavities
A pocket formed by the soft tissue of cheeks and gingiva

2. Lobes
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Dividing point of a multi-rooted tooth
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Developmental segment of a tooth

3. What are the 4 maxillary nerve branches?
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
When the dentin is exposed
The tip of the chin
Initiation of the tooth begins

4. Horizontal Fiber Group
Functions the same as the alveolar cfg; originate in alveolar bone
Short tubules that seem to crossover to the enamel
Mucosa that covers the alveolar bone
Platysma - trapezius - sternocleidomastoid

5. Lesser Palatine Foramen
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Where the ectoderm layer matures into the enamel
The portion of the tooth that meets the gingiva

6. Distal
Two cortical bone plates that come together between each tooth
To lubricate the oral cavity and to moisten food
Initiation of the tooth begins
Surface away from the midline

7. Middle Superior Alveolar Nerve
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Place where the groove comes together or fissures cross
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Primary and permanent

8. What are the characteristics of deciduous teeth?
Primary and permanent
Supportive fibers that anchor the tooth to the bone
Outside surface Which is towards the lips
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

9. Enamel Dysplasia
Raised vertical folds of tissue on the lateral border of the tongue
When the surface of the teeth becomes grooved
Largest of the branches of the external carotid artery; supplies facial structure
The mandibular molars

10. Neonatal line
2 to 3 pints
Incremental line indicating trauma of birth
Folds of tissue that extend horizontally from the uvula to the base of the tongue
A projection that extends off the back of the soft palate

11. What are the characteristics of permanent teeth?
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Healthy gingival tissue with an orange texture
Layers of tooth tissue become calcified
Enamel is thinner - pulp chamber is smaller -

12. Succedaneous teeth
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Permeante teeth replace the primary teeth
Mastication - aids in speech - influence facial structure - chewing surfaces

13. Linea Alba
Greater - lesser - naso palatine nerves
To lubricate the oral cavity and to moisten food
A small projection in the middle of the upper lip
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

14. Occlusal
Pulverizing or chewing surface
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Full deep rich sound in nasal cavity
Acts as anchors between the alveolar bone and the tooth

15. Sharpey's Fibers
Looking at the border of the tongue
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Acts as anchors between the alveolar bone and the tooth
Outside surface Which is towards the lips

16. External Jugular Vein
Enamel is thinner - pulp chamber is smaller -
The disc becomes displaced
Mandibular central incisors
Drains the superficial veins of the face and neck into the subclavian vein

17. Incisive Nerve branch
Extreme variations from the norm
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
The corners of the mouth where the top and bottom lip meet
Intervating the anterior teeth and the labial gingiva

18. Transverse Ridge
Calcified masses of dentin
Looking at the border of the tongue
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Linear elevation of the tooth

19. Bud stage
Initiation of the tooth begins
Outside surface Which is towards the cheek - on posterior teeth
The tip of the chin
A bony projection that separates each socket

20. Labial Mucosa
The area on the crown of the tooth that is nearest the gingival
Oval structures that are located on the dorsal surface of the tongue
Smaller branch that ennervates the soft palate uvula and tonsils
The inner surface of the lips

21. Torus
Bi-cuspids
Excess bone in the middle of the palate
Drains the superficial veins of the face and neck into the subclavian vein
Looking at the border of the tongue

22. Intertubular Dentin
A line that represents the alveolus bone lining the socket
Forming organ takes shape and resembles the shape of a bell
Dentin found between the tubules
Enamel is thinner - pulp chamber is smaller -

23. Lamina Dura
Portion of the lips that are red
Place where the groove comes together or fissures cross
A line that represents the alveolus bone lining the socket
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

24. Internal Oblique Ridge
Excess bone formations under the tongue on the alvellar bone
Two cortical bone plates that come together between each tooth
The connective tissue of the marginal gingiva
Follows the inside of the ramus and the body of the mandible

25. External Carotid Artery
Supplies blood to the face and oral cavity
Assist in the movement and functioning of the tongue
2 small raised folds of tissue where the lingual frenum attaches
Bi-cuspids

26. What are the four main functions of deciduous teeth?
Surface away from the midline
Mastication - aids in speech - influence facial structure - chewing surfaces
Origin of the tooth
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

27. If a patient receives toxic agents - how long does it take for their sense of taste to return?
A projection that extends off the back of the soft palate
10 days
Drains the maxiallary artery and superficial temporal arteries
Oval depression of temporal bone in condyloid process

28. Cleft Lip
Separation of the upper lip ( 1 of 1000 live births)
The area on the crown of the tooth that is nearest the gingival
Indented
A shallow v-shaped depression located below the bottom of the nose and above the lips

29. How can you tell if someone has cancer by looking at the tongue?
The area on the crown of the tooth that is nearest the gingival
Supplies blood to the roots and periodontal ligaments of the interior teeth
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Looking at the border of the tongue

30. Common Carotid
Arteries supplying blood to most of the head and the neck
Genioglossus - hyoglossus - styloglossus - palatoglossus
Palatoglossus - palatopharyngeal
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

31. How many cusps does the second bicuspid have?
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Orbicularis oris - buccinator - mentalis - zygomatic major
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Two

32. Labial
Excess bone formations under the tongue on the alvellar bone
Healthy gingival tissue with an orange texture
A projection that extends off the back of the soft palate
Outside surface Which is towards the lips

33. Lingual Foramen
Contains six branches that supply blood to the pharynx muscles - soft palate tonsils - the posterior of the tongue - sub mandibular gland - muscles of the face - nasal septom - nose and the eyelids
The internal surface at the center of the mandible
Teeth will not erupt in proper position
Wings of the sphenoid bone

34. Hard Palate
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Creates the wall of the dentinal tubule
A bony plate covered with keratinized tissue located in the anterior portion of the palate
The teeth located at the back of the mouth

35. How is the TMJ supported and what controls their movement?
The internal surface at the center of the mandible
Smaller branch that ennervates the soft palate uvula and tonsils
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Ligaments and muscles of mastication

36. Lingual Veins
Bluish veins that run the length of the tongue
Smaller branch that ennervates the soft palate uvula and tonsils
Cut - tear - and grind food
Dividing point of a multi-rooted tooth

37. Fordyce's Spots
Divides the crown and the root
Narrow long enamel tuft
Small yellowish glands on the labial mucosa
Excess dryness of the mouth

38. Cementoblast
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Cells that form cementum
Peg shaped crown with a smooth surface

39. Vestibule
Located on the inside of the body of the ramus
(free gingiva) surrounds the teeth
The line of demarcation between the attached gingiva and the marginal gingiva
A pocket formed by the soft tissue of cheeks and gingiva

40. Philtrum
Portion of the root seen in the oral cavity
Secrete saliva to assist in process of digestion
32
Vertical groove on the midline of the upper lip

41. Hyoid Bone
Small bony projections surrounding the lingual foramen
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Genioglossus - hyoglossus - styloglossus - palatoglossus
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

42. Resonance
Third tooth from the midline
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Full deep rich sound in nasal cavity
Drains the floor of the mouth

43. Histology
Drains the superficial veins of the face and neck into the subclavian vein
Place where the groove comes together or fissures cross
The study of the microscopic structure and functions of tissues
Folds of tissue that extend horizontally from the uvula to the base of the tongue

44. Glenoid Fossa
Retracts or depresses the tongue
Oval depression of temporal bone in condyloid process
Enamel is thinner - pulp chamber is smaller -
Pulls the hyoid bone and the tongue anteriorly

45. When do the tooth buds appear?
Week 11
Middle line of the teeth
Composed of mucosa and surrounds the necks of the teeth
The inner surface of the lips

46. Genial Tubercles
2 to 3 pints
Small bony projections surrounding the lingual foramen
Incremental lines around the layers of the enamel matrix
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

47. Parotid glands
Full deep rich sound in nasal cavity
The mandibular molars
The largest of the salivary glands which lie just below and in front of the ear
Tooth emerges from gum tissue and becomes visible

48. Enamel Lamellae
Synovial fluid
Narrow long enamel tuft
Natural teeth in position
A flap of tissue on the on the buccal mucosa

49. What are the 4 muscles of the floor of the mouth?
Used to pulverize food
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Forming organ takes shape and resembles the shape of a bell
Digstric - Mylohyoid - stylohyoid - geniohyoid

50. Primary palate
A rounded area beyond the last posterior maxillary tooth
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Separates the developing oral cavities from the nasal cavities
Conception thru the first two weeks