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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. Mixed Dentition
A period of both primary teeth and permeant teeth are in the dentition
Smaller branch that ennervates the soft palate uvula and tonsils
Three bulges on the incisal edge
Inside surface Which is towards the tongue - on anterior teeth

2. Fossa
Rounded depression on a tooth
9 weeks thru birth
Tissue fluid surrounding the cell membrane of the odontoblast
Scroll like bones outside the nasal cavaties

3. Lesser Palatine Foramen
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
The development of different cells
Small head - low nasal bridge - thin upper lip - small mandible
Largest division of the trigeminal nerve

4. Mandibular Artery
Supportive fibers that anchor the tooth to the bone
The development of different cells
Causes a thickening of the cementum around the apex
Located behind the ramus of the mandible and branches into five arteries

5. Convex
Resist rotational forces and hold teeth in inter-proximal contact
Used to pulverize food
To bulge of curve outward
Acts as anchors between the alveolar bone and the tooth

6. Sublingual Sulcus
A horseshoe shaped groove that follow the curve of the dental arch
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
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Appears to be loosely attached - covering the alveolar bone.

7. Buccal Mucosa
The inner surface of the cheeks
An extension of an unattached gingiva and the tooth
The outer edge of the nostril
Narrow long enamel tuft

8. Retromolar Area
The largest of the salivary glands which lie just below and in front of the ear
A triangular area located behind the last molar
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

9. Cleft Lip
Convex area on the lingual surface near gingiva
Surface towards the midline
Separation of the upper lip ( 1 of 1000 live births)
The first predentin that is formed and matures within the tube

10. Mental Protuberance
The inner surface of the cheeks
Located on the inside of the body of the ramus
Tissue covering the alveolar processes
The tip of the chin

11. Which molar contains the cusp of Caribelli?
Formed by the fibroblast cells and secures the tooth in the socket
Maxillary first molar
Drains the facial structures beginning near the eye and descending toward the mandible
Divides the crown and the root

12. Function of Palatoglossus
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Elevates the posterior portion of the tongue and narrows the fauces
Aid in attaching the gingiva to the alveolar bone
Lining covers inside of the oral cavity

13. Tome's process
A rounded area beyond the last posterior maxillary tooth
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Responsible for laying down the enamel matrix into place
Drains the maxiallary artery and superficial temporal arteries

14. Peritubular Dentin
4/5 cusps/ 3 roots
Third tooth from the midline
The internal surface at the center of the mandible
Creates the wall of the dentinal tubule

15. What are the three muscles of the neck?
Platysma - trapezius - sternocleidomastoid
The layer of dentin that surrounds the pulp
Forms into the inner lining of the oral cavitiy and enamel of the teeth
The crown of the tooth that is nearest the incisal edge near the anterior tooth

16. Osteoclasts
Convex area on the lingual surface near gingiva
What divides the tongue in half and runs from the base to the tip of the tongue
A condition where the lower frenum attachment is very short/DDS/frenectomy
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

17. Dentoperiosteal Fiber Groups
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
Mucosa that covers the alveolar bone
Supportive fibers that anchor the tooth to the bone
A triangular area located behind the last molar

18. What is another name for premolars?
Depresses the tongue
The area on the crown of the tooth that is nearest the gingival
Bi-cuspids
The connective tissue of the marginal gingiva

19. Neonatal line
Secrete saliva to assist in process of digestion
Smaller branch that ennervates the soft palate uvula and tonsils
Incremental line indicating trauma of birth
Responsible for laying down the enamel matrix into place

20. How is the TMJ supported and what controls their movement?
Two weeks thru 8th week
The deepest point of the vestibule
Drains the maxiallary artery and superficial temporal arteries
Ligaments and muscles of mastication

21. Function of mylohyoid
Assist in depressing the mandible and elevating the tongue
Incremental lines around the layers of the enamel matrix
Enamel forming cells
The line of demarcation between the attached gingiva and the marginal gingiva

22. Stenson's Duct
Duct located on the parotid papilla
Middle line of the teeth
Small dark brushes
Cells that form cementum

23. Mastoid process
Cells that form dentin
Bony projection found on the bottom border of the temporal bone
20
Portion of the lips where the skin meets the vermilion zone

24. Internal Carotid Artery
Supplies blood to the brain and the eyes
6 years old
Corners of the mouth
Dentin found between the tubules

25. Vestibule
A pocket formed by the soft tissue of cheeks and gingiva
2 to 3 pints
Short tubules that seem to crossover to the enamel
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone

26. Pterygoid plexus of the veins
A junction or center of veins that directly or indirectly drain a vast area
A pocket formed by the soft tissue of cheeks and gingiva
Calcified masses of dentin
Teeth after cuspids

27. Tubercle of the Lip
Two
Drains the floor of the mouth
Supplies blood to the face and oral cavity
A small projection in the middle of the upper lip

28. Transverse Ridge
Small yellowish glands on the labial mucosa
Where the ectoderm layer matures into the enamel
Found only in multi-rooted teeth and resists rotational forces
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

29. What is the purpose of saliva?
9 weeks thru birth
To lubricate the oral cavity and to moisten food
A condition where the lower frenum attachment is very short/DDS/frenectomy
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

30. Vermilion Zone
Inner portion of the enamel rod
Portion of the lips that are red
Located behind the ramus of the mandible and branches into five arteries
Assists in elevating the chin

31. Gums
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
The cornerstone of the mouth
Tissue covering the alveolar processes
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

32. What are the 4 muscles of the floor of the mouth?
Inside of the maxillary teeth
Digstric - Mylohyoid - stylohyoid - geniohyoid
Resists forces that try to pull the tooth outward
Natural teeth in position

33. Fetal Alcohol Syndrome symptons
Trigeminal nerve--because it ennervates the maxilla and the mandible
The tip of the chin
Maxillary first molar
Small head - low nasal bridge - thin upper lip - small mandible

34. Facial Vein
Drains the facial structures beginning near the eye and descending toward the mandible
Drains the superficial veins of the face and neck into the subclavian vein
Acts as anchors between the alveolar bone and the tooth
To lubricate the oral cavity and to moisten food

35. Naso Palatine Nerve
9 months (5 months ultrasound to tell sex)
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Inner portion of the enamel rod
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

36. Pterygoid Process
Functions the same as the alveolar cfg; originate in alveolar bone
Mildest form of cleft palate
Wings of the sphenoid bone
Teeth after cuspids

37. Gingiva
Maxillary third molar
Palatoglossus - palatopharyngeal
Pointed elongations of the pulp
Composed of mucosa and surrounds the necks of the teeth

38. Hypercementosis
Causes a thickening of the cementum around the apex
The deepest point of the vestibule
Convex area on the lingual surface near gingiva
Incremental lines around the layers of the enamel matrix

39. Histology
Incremental line indicating trauma of birth
Quarters of the teeth
Set of arches found farther in the back of the throat
The study of the microscopic structure and functions of tissues

40. Function of Trapezius
Band of fibrous tissue which attaches muscle to bone
Moves the head backward and laterally
Bone that surrounds the root of the tooth
9 weeks thru birth

41. Morphology
Second teeth next to central incisors
Study of the structure and form of the teeth
A horseshoe shaped groove that follow the curve of the dental arch
Tooth emerges from gum tissue and becomes visible

42. Palantine Tonsils
Found near the cementoenamel junction
Cluster of tissue that manufactures and secrets fluid
Radiates from the developmental groove
Located in a depressed area between the pillars

43. Circumpulpal Dentin
Bony projection found on the bottom border of the temporal bone
The layer of dentin that surrounds the pulp
The fixed attachment of a muscle
Upper arch of the teeth

44. Enamel Dysplasia
Forms a large cavity above the roots of the maxillary molars
Calcified masses of dentin
When the surface of the teeth becomes grooved
Small curved lines that run parellel to the CEJ

45. Apposition
A line of tissue that extends from the tongue to the floor of the mouth
Calcium salts are deposited into formed tooth
12 years
Slight ridges on the cervical third of certain teeth that extend mesiodistally

46. What are the four main functions of deciduous teeth?
When the tissue becomes inflamed
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Mastication - aids in speech - influence facial structure - chewing surfaces

47. How many cusps/ roots do the maxillary first molars have?
4/5 cusps/ 3 roots
When the dentin is exposed
Used to pulverize food
Located in a depressed area between the pillars

48. Sublingual Caruncles
Tooth emerges from gum tissue and becomes visible
Ligaments and muscles of mastication
2 small raised folds of tissue where the lingual frenum attaches
Mildest form of cleft palate

49. Mesenchyme Tissue
Primary embryonic mesoderm layer that develops during the morpho differentiation period
The cornerstone of the mouth
Study of prenatal growth and the developing process of an individual
Two cortical bone plates that come together between each tooth

50. Horizontal Fiber Group
Pointed or rounded mounds on the crown of the tooth
Enamel is thinner - pulp chamber is smaller -
Functions the same as the alveolar cfg; originate in alveolar bone
Papillae that give the tongue the strawberry effect