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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. When does the maxillary second molar erupt?
1500 millimeters
Teeth after cuspids
12 years
The portion of the tooth that meets the gingiva

2. Nasal-Labial Groove
Assist in depressing the mandible and elevating the tongue
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
To bulge of curve outward

3. Muscle origine
The fixed attachment of a muscle
Incremental line indicating trauma of birth
The disc becomes displaced
When the surface of the teeth becomes grooved

4. Pterygoid Process
Small curved lines that run parellel to the CEJ
Dentin found between the tubules
Elevates the posterior portion of the tongue and narrows the fauces
Wings of the sphenoid bone

5. Torus Mandibularis
Supplies blood to the roots and periodontal ligaments of the interior teeth
A projection that extends off the back of the soft palate
Excess bone formations under the tongue on the alvellar bone
Portion covered with cementum

6. Dentinal Fluid
Where the ramus meets the body of the mandible on the outside border
Tissue fluid surrounding the cell membrane of the odontoblast
The development of different tissues
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

7. Perikymata
Shaping the tongue during speech - mastication and swallowing
Small grooves noted on some teeth
Small curved lines that run parellel to the CEJ
Three cusps/ trifurcated

8. Foliate Papillae
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
Shaping the tongue during speech - mastication and swallowing
Raised vertical folds of tissue on the lateral border of the tongue
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

9. What are the three muscles of the neck?
Drains the floor of the mouth
Aid in attaching the gingiva to the alveolar bone
Platysma - trapezius - sternocleidomastoid
The ridges that run horizontally across the hard palate behind the incisive papilla

10. Lobes
Wearing away of the incisal or occlusal surfaces of the tooth
An extension of an unattached gingiva and the tooth
Developmental segment of a tooth
Genioglossus - hyoglossus - styloglossus - palatoglossus

11. Alveolar Crest
Excess dryness of the mouth
Covering over the enamel that is left over from the epithelium ameloblasts
An overgrowth of the gingival tissue
Two cortical bone plates that come together between each tooth

12. Palatine Bones
Joined at the midline and are often referred to as the median Palatine suture
Small dark brushes
When the tissue becomes inflamed
Demonstrates a disturbance in the body metabolism

13. Sharpey's Fibers
Band of fibrous tissue which attaches bone to bone
Acts as anchors between the alveolar bone and the tooth
Calcium salts are deposited into formed tooth
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip

14. Imbracation Lines
Small curved lines that run parellel to the CEJ
The cornerstone of the mouth
Lift the hyoid bone and assist in opening the mouth
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

15. Lesser Palatine Foramen
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
No bicuspids/ no 3rd molars
Occurs in unusual ways and distorted crowns may appear

16. Circular Ligament Fiber Groups
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Circle and tighten the gingival margin around the neck of the tooth
Biting edge of the teeth

17. Interradical Fiber Group
Found only in multi-rooted teeth and resists rotational forces
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Scroll like bones outside the nasal cavaties
Chewing and swallowing food

18. Enamel Lamellae
Trigeminal nerve--because it ennervates the maxilla and the mandible
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
Supplies blood to the brain and the eyes

19. How many teeth are in the permanent set of teeth?
Peg shaped crown with a smooth surface
Duct located on the parotid papilla
32
Platysma - trapezius - sternocleidomastoid

20. Gingival Sulcus
Maxillary third molar
Fleshy elevation under the tongue
The space between the unattached gingiva and the tooth
Two vertical extensions of the mandible

21. Mylohyoid Nerve Branch
A period of both primary teeth and permeant teeth are in the dentition
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Responsible for laying down the enamel matrix into place

22. Evanesce
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
To dissolve
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch

23. Function of Palatopharyngeal
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
The space between the unattached gingiva and the tooth
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
Constricts the nasopharyngeal passage and elevates the larynx

24. Labial Mucosa
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
The connective tissue of the marginal gingiva
A line of demarcation between the attached gingiva and alveolar mucosa
The inner surface of the lips

25. Cortical Bone
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Compact bone plate of the facial and lingual surfaces
Forms the remaining 2/3 of the hard and soft palate uvula
Lower arch of the teeth

26. What is the purpose of saliva?
Mastication - aids in speech - influence facial structure - chewing surfaces
Acts as anchors between the alveolar bone and the tooth
Middle line of the teeth
To lubricate the oral cavity and to moisten food

27. Vestibule
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
2 to 3 pints
Week 11
A pocket formed by the soft tissue of cheeks and gingiva

28. Sublingual Caruncles
Trigeminal - facial - glossopharyngeal - hypoglossal
2 small raised folds of tissue where the lingual frenum attaches
Opening for the ear
2 to 3 pints

29. Fossa
6 years old
Dividing point of a multi-rooted tooth
The line of demarcation between the attached gingiva and the marginal gingiva
Rounded depression on a tooth

30. What are the 4 cranial nerves that ennervate the face and oral cavity
Trigeminal - facial - glossopharyngeal - hypoglossal
Enamel is thinner - pulp chamber is smaller -
Resulting from an imperfect union where the lobes come together
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

31. Incisive Arteries
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Narrow long enamel tuft
Supplies blood to the roots and periodontal ligaments of the interior teeth
Small bony projections surrounding the lingual foramen

32. Alveolar Mucosa
Joined at the midline and are often referred to as the median Palatine suture
When the dentin is exposed
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Appears to be loosely attached - covering the alveolar bone.

33. Histo Differentation
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Compact bone plate of the facial and lingual surfaces
Separates the developing oral cavities from the nasal cavities
The development of different tissues

34. How many teeth are in the Primary teeth?
9 months (5 months ultrasound to tell sex)
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
20

35. Incisive Nerve branch
Intervating the anterior teeth and the labial gingiva
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Circle and tighten the gingival margin around the neck of the tooth
Tooth emerges from gum tissue and becomes visible

36. Meniscus
Disk that acts like a cushion between the temporal bone and the condyloid process
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior 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
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

37. Occlusal
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Retracts the tongue and raises the tip of the tongue
Place where the groove comes together or fissures cross
Pulverizing or chewing surface

38. Inferior Alveolar Artery
Covers muscle tissue in the posterior portion of the palate
The portion of the tooth that meets the gingiva
Disk that acts like a cushion between the temporal bone and the condyloid process
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

39. What are the 4 taste senses and where are they located?
The internal surface at the center of the mandible
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
To dissolve

40. Uvula
Separation of the upper lip ( 1 of 1000 live births)
A projection that extends off the back of the soft palate
Acts as anchors between the alveolar bone and the tooth
Band of fibrous tissue which attaches bone to bone

41. Odontogenesis
Teeth after cuspids
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Tissue covering the alveolar processes
Origin of the tooth

42. Secondary Dentin
Genioglossus - hyoglossus - styloglossus - palatoglossus
Formed by the fibroblast cells and secures the tooth in the socket
Forms after the completion of the apical foramen
Forms the bulk of the tooth

43. Common Carotid
Developmental segment of a tooth
Arteries supplying blood to most of the head and the neck
Smaller branch that ennervates the soft palate uvula and tonsils
Draws down the mandible and corners of the mouth

44. What are the eight landmarks of the face?
Where the proximal sides of two teeth come together and touch
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

45. Naso Palatine Nerve
Three bulges on the incisal edge
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Bluish veins that run the length of the tongue
4th week

46. Xygote
Oval depression of temporal bone in condyloid process
Creates the wall of the dentinal tubule
Conception thru the first two weeks
Follows the length of the body of the mandible past the last tooth and up to the ramus

47. Labial Commissures
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Where the ramus meets the body of the mandible on the outside border
The corners of the mouth where the top and bottom lip meet
The fixed attachment of a muscle

48. Pulp Stones
The internal surface at the center of the mandible
Natural teeth in position
Compact bone plate of the facial and lingual surfaces
Calcified masses of dentin

49. Alveolar Mucosa
Mucosa that covers the alveolar bone
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
The development of different cells

50. Lesser Palatine Nerve
Smaller branch that ennervates the soft palate uvula and tonsils
Tubules that pass through the entire surface of the dentin
Functions the same as the alveolar cfg; originate in alveolar bone
Looking at the border of the tongue