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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.
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. Mandibular Artery
Located behind the ramus of the mandible and branches into five arteries
Healthy gingival tissue with an orange texture
Circle and tighten the gingival margin around the neck of the tooth
Primitive mouth

2. Muscle origine
Vertical groove on the midline of the upper lip
Follows the length of the body of the mandible past the last tooth and up to the ramus
Looking at the border of the tongue
The fixed attachment of a muscle

3. Dental Sac
To lubricate the oral cavity and to moisten food
An enclosed area that matures into dentin - cementum and pulp
Small grooves noted on some teeth
Aid in attaching the gingiva to the alveolar bone

4. Incisive Nerve branch
Portion of the lips where the skin meets the vermilion zone
Intervating the anterior teeth and the labial gingiva
Enamel is thinner - pulp chamber is smaller -
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

5. Posterior Superior Alveolar Nerve
Portion covered with cementum
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Digstric - Mylohyoid - stylohyoid - geniohyoid
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

6. What are the 4 cranial nerves that ennervate the face and oral cavity
To lubricate the oral cavity and to moisten food
Trigeminal - facial - glossopharyngeal - hypoglossal
Origin of the tooth
A line that represents the alveolus bone lining the socket

7. Vestibule
Extends from the mucogingival junction to the gingival groove
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Cells From which connective tissue evolve
A pocket formed by the soft tissue of cheeks and gingiva

8. How many teeth are in the Primary teeth?
Greater - lesser - naso palatine nerves
Third tooth from the midline
A small projection in the middle of the upper lip
20

9. What ligament is retained the longest during periodontal disease?
Interdental ligament
Oval depression of temporal bone in condyloid process
Vertical groove on the midline of the upper lip
Bone that surrounds the root of the tooth

10. What are the characteristics of deciduous teeth?
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
A rounded area beyond the last posterior maxillary tooth
Genioglossus - hyoglossus - styloglossus - palatoglossus
Radiates from the developmental groove

11. When does the maxillary second molar erupt?
Separates the developing oral cavities from the nasal cavities
12 years
H20 - mucin - organic salts and digestive enzymes
Extends from the medial corner of the eye to the nasal cavity

12. Attrition
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Incremental lines around the layers of the enamel matrix
Wearing away of the incisal or occlusal surfaces of the tooth
Assist in depressing the mandible and elevating the tongue

13. Interdental Ligament Group
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Opening in the mouth below the orbit on the maxillary bone
Resist rotational forces and hold teeth in inter-proximal contact
Two cortical bone plates that come together between each tooth

14. Lingual Nerve Branch
Biting edge of the teeth
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
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Drains the Pterygoid plexus of the veins

15. Cleft Uvula
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
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
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Mildest form of cleft palate

16. Alveolar Crest
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Two cortical bone plates that come together between each tooth
Inside surface Which is towards the tongue - on anterior teeth
Retracts or depresses the tongue

17. Embryo
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Arteries supplying blood to most of the head and the neck
Two weeks thru 8th week
Hinge motion and gliding movement

18. lst and second premolars
Cells develop into different tissues
The mandibular first premolar
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Teeth after cuspids

19. Pulp horns
Lining covers inside of the oral cavity
The space between the unattached gingiva and the tooth
Pointed elongations of the pulp
Found only in multi-rooted teeth and resists rotational forces

20. Secondary Dentin
A line of demarcation between the attached gingiva and alveolar mucosa
Forms after the completion of the apical foramen
Retracts the tongue and raises the tip of the tongue
Radiates from the developmental groove

21. Transverse Ridge
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Resulting from an imperfect union where the lobes come together
Functions the same as the alveolar cfg; originate in alveolar bone
Set of arches found farther in the back of the throat

22. Exfoliated
Inner portion of the enamel rod
The connective tissue of the marginal gingiva
A line of tissue that extends from the tongue to the floor of the mouth
Shed from the oral cavity

23. Tendon
Composed of mucosa and surrounds the necks of the teeth
Bony projection found on the bottom border of the temporal bone
Band of fibrous tissue which attaches muscle to bone
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

24. Function of Styloglossus
Retracts the tongue and raises the tip of the tongue
Radiates from the developmental groove
Corners of the mouth
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

25. Incisal third
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Narrow long enamel tuft
Causes a thickening of the cementum around the apex
The slightly raised line extending down the middle of the hard palate

26. Pit
Extreme variations from the norm
Of or pertaining to area surrounding naval cavity
Teeth will not erupt in proper position
Place where the groove comes together or fissures cross

27. Parotid Papilla
A flap of tissue on the on the buccal mucosa
Conception thru the first two weeks
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Small curved lines that run parellel to the CEJ

28. What is Ankyloglossia and who can treat it / What is the treatment called?
2 to 3 pints
Assist in depressing the mandible and elevating the tongue
A condition where the lower frenum attachment is very short/DDS/frenectomy
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

29. Rami
Chewing and swallowing food
Located on the inside of the body of the ramus
Secrete saliva to assist in process of digestion
Two vertical extensions of the mandible

30. Periodontal Ligaments
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Formed by the fibroblast cells and secures the tooth in the socket
Radiates from the developmental groove

31. Internal Oblique Ridge
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Follows the inside of the ramus and the body of the mandible
Bifurcated/ 5 cusps
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

32. When do oral and nasal cavity separate and palate develop?
Week 12
Largest facial bone with two sections joined at the median suture
The connective tissue of the marginal gingiva
Small raised projections where taste buds are located

33. How many teeth are in the permanent set of teeth?
Opening for the ear
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Band of fibrous tissue which attaches bone to bone
32

34. Tome's process
The development of different forms
9 weeks thru birth
Natural teeth in position
Responsible for laying down the enamel matrix into place

35. What are the eight landmarks of the face?
Tubules that pass through the entire surface of the dentin
What divides the tongue in half and runs from the base to the tip of the tongue
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
4 cusps/ bifurcated

36. Anterior Alveolar Nerve
Short tubules that seem to crossover to the enamel
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Function to resist rotational forces and tilting
The largest of the salivary glands which lie just below and in front of the ear

37. Concave
Trigeminal nerve--because it ennervates the maxilla and the mandible
Corners of the mouth
Incremental lines around the layers of the enamel matrix
Indented

38. What kind of root does the maxillary first molar have?
Rounded depression on a tooth
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Triferacated

39. External Jugular Vein
Forms a large cavity above the roots of the maxillary molars
Tissue fluid surrounding the cell membrane of the odontoblast
Drains the superficial veins of the face and neck into the subclavian vein
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone

40. Posterior Tonsillar Pillar
Set of arches found farther in the back of the throat
4th week
Occlusal surface of the posterior tooth
Composed of mucosa and surrounds the necks of the teeth

41. Peg lateral
Dividing point of a multi-rooted tooth
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Peg shaped crown with a smooth surface

42. What is saliva made of?
H20 - mucin - organic salts and digestive enzymes
Allow flexibility during mastication - speech
Growth from the oral epithelium that gives rise to the tooth buds
Folds of tissue to the the lingual veins

43. Nasolacrimal groove
Peg shaped crown with a smooth surface
Extends from the medial corner of the eye to the nasal cavity
Separates the developing oral cavities from the nasal cavities
Dentin found between the tubules

44. Palatine Rugae
Sharp projection on the under surface of the temporal bone
9 weeks thru birth
The ridges that run horizontally across the hard palate behind the incisive papilla
Compact bone plate of the facial and lingual surfaces

45. Lesser Palatine Nerve
Curve outward
Where the ramus meets the body of the mandible on the outside border
Smaller branch that ennervates the soft palate uvula and tonsils
Creates the wall of the dentinal tubule

46. Cuspid
Forms after the completion of the apical foramen
Third tooth from the midline
Canal or passage for fluid
A period of both primary teeth and permeant teeth are in the dentition

47. Mesial
Second teeth next to central incisors
Drains the superficial veins of the face and neck into the subclavian vein
Surface towards the midline
Bone that surrounds the root of the tooth

48. Median Sulcus
Duct located on the parotid papilla
What divides the tongue in half and runs from the base to the tip of the tongue
Small dark brushes
Raised vertical folds of tissue on the lateral border of the tongue

49. Incisive Papilla
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Two weeks thru 8th week
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Circle and tighten the gingival margin around the neck of the tooth

50. Endoderm
Resists forces that try to pull the tooth outward
32
Respiratory system - digestive system and glandular organs
Elevated are of enamel that forms the Mesial and distal borders