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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. What are the two muscles of the soft palate?
Palatoglossus - palatopharyngeal
The teeth located at the back of the mouth
Excess bone in the middle of the palate
Chewing and swallowing food

2. Attached Gingiva
Portion of the lips that are red
Extends from the mucogingival junction to the gingival groove
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Week 12

3. Mental Nerve Branch
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
The cornerstone of the mouth
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
Largest division of the trigeminal nerve

4. What are the eight landmarks of the face?
Functions the same as the alveolar cfg; originate in alveolar bone
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Where the ectoderm layer matures into the enamel
A bony projection that separates each socket

5. Fissure
Resulting from an imperfect union where the lobes come together
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
12 years
Compact bone plate of the facial and lingual surfaces

6. Dentinal Tubules
Tubules that pass through the entire surface of the dentin
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
9 months (5 months ultrasound to tell sex)
Tissue fluid surrounding the cell membrane of the odontoblast

7. Vestibule Fornix
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Papillae that give the tongue the strawberry effect
The deepest point of the vestibule
Growth from the oral epithelium that gives rise to the tooth buds

8. Osteoclasts
Natural teeth in position
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Incremental line indicating trauma of birth
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

9. Posterior Teeth
Formed by the fibroblast cells and secures the tooth in the socket
The teeth located at the back of the mouth
The study of the microscopic structure and functions of tissues
Drains the floor of the mouth

10. Which molar contains the cusp of Caribelli?
Composed of mucosa and surrounds the necks of the teeth
Forms the remaining 2/3 of the hard and soft palate uvula
Layers of tooth tissue become calcified
Maxillary first molar

11. Gland
Resist rotational forces and hold teeth in inter-proximal contact
Cluster of tissue that manufactures and secrets fluid
Slight ridges on the cervical third of certain teeth that extend mesiodistally
A period of both primary teeth and permeant teeth are in the dentition

12. Lamina Dura
A line that represents the alveolus bone lining the socket
A line of tissue that extends from the tongue to the floor of the mouth
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Resist rotational forces and hold teeth in inter-proximal contact

13. Horizontal Fiber Group
9 months (5 months ultrasound to tell sex)
6 months/3years
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Functions the same as the alveolar cfg; originate in alveolar bone

14. Hard Palate
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Bicuspids
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Biting edge of the teeth

15. Caruncle
Cells that form cementum
Fleshy elevation under the tongue
Assist in depressing the mandible and elevating the tongue
A small projection in the middle of the upper lip

16. What are the characteristics of permanent teeth?
Radiates from the developmental groove
The deepest point of the vestibule
Enamel is thinner - pulp chamber is smaller -
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

17. Mandible Arch
Lower arch of the teeth
The groove below the lower lips that separates the lips from the chin
Primitive mouth
Bluish veins that run the length of the tongue

18. Articular Disc
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Elevates the posterior portion of the tongue and narrows the fauces
Resists forces that try to pull the tooth outward
Band of fibrous tissue which attaches muscle to bone

19. Groove
Appears to be loosely attached - covering the alveolar bone.
Quarters of the teeth
Small linear depression
Mandibular central incisors

20. Cingulum
Cut - tear - and grind food
Convex area on the lingual surface near gingiva
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
2 to 3 pints

21. Distal
Surface away from the midline
20
Portion of the root seen in the oral cavity
Two cortical bone plates that come together between each tooth

22. Philtrum
An extension of an unattached gingiva and the tooth
The layer of dentin that surrounds the pulp
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
A shallow v-shaped depression located below the bottom of the nose and above the lips

23. Posterior Tonsillar Pillar
Occurs in unusual ways and distorted crowns may appear
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Small head - low nasal bridge - thin upper lip - small mandible
Set of arches found farther in the back of the throat

24. What is the function of the buccle nerve branch?
Set of arches found farther in the back of the throat
Resulting from an imperfect union where the lobes come together
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
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

25. Function of Digastric
6 years old
Lift the hyoid bone and assist in opening the mouth
Causes a thickening of the cementum around the apex
Folds of tissue to the the lingual veins

26. Neonatal line
4th week
Incremental line indicating trauma of birth
Natural teeth in position
Bony projection found on the bottom border of the temporal bone

27. Enamel Lamellae
Band of fibrous tissue which attaches bone to bone
Narrow long enamel tuft
Bluish veins that run the length of the tongue
Located in a depressed area between the pillars

28. Interdental Gingiva
Curve outward
Assists in elevating the chin
An extension of an unattached gingiva and the tooth
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

29. Cuspid
Full deep rich sound in nasal cavity
Largest of the branches of the external carotid artery; supplies facial structure
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
Third tooth from the midline

30. Gums
Acts as anchors between the alveolar bone and the tooth
Teeth after cuspids
Bone that surrounds the root of the tooth
Tissue covering the alveolar processes

31. External Auditory Meatus
Small raised projections where taste buds are located
Opening for the ear
The portion of the tooth that meets the gingiva
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

32. Histo Differentiation
Healthy gingival tissue with an orange texture
Cells develop into different tissues
Trigeminal nerve--because it ennervates the maxilla and the mandible
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

33. Enamel Dysplasia
Drains the maxiallary artery and superficial temporal arteries
When the surface of the teeth becomes grooved
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Pointed or rounded mounds on the crown of the tooth

34. How many cusps/ roots do the 2/3rd mandibular molars have?
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
4 cusps/ bifurcated
The bone that separates the root on a tooth

35. Muscle Insertion
The moveable attachment of the muscle
Creates the wall of the dentinal tubule
Responsible for laying down the enamel matrix into place
Second teeth next to central incisors

36. How many cusps does the second bicuspid have?
2 small raised folds of tissue where the lingual frenum attaches
Two
Chewing and swallowing food
Arteries supplying blood to most of the head and the neck

37. When do the primary teeth begin erupting and are fully erupted?
A raised area of tissue laying behind the maxillary central incisors on the hard palate
6 months/3years
Shed from the oral cavity
The development of different cells

38. Stomedeum
Primitive mouth
Disk that acts like a cushion between the temporal bone and the condyloid process
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
Lining covers inside of the oral cavity

39. External Carotid Artery
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Two
Permeante teeth replace the primary teeth
Supplies blood to the face and oral cavity

40. Cleft Uvula
The groove below the lower lips that separates the lips from the chin
Bifurcated/ 5 cusps
Mildest form of cleft palate
A small projection in the middle of the upper lip

41. Function of Trapezius
An extension of an unattached gingiva and the tooth
The largest of the salivary glands which lie just below and in front of the ear
Moves the head backward and laterally
Small dark brushes

42. Endoderm
Respiratory system - digestive system and glandular organs
2 to 3 pints
Cluster of tissue that manufactures and secrets fluid
Linear elevation of the tooth

43. Alveologingival Fiber Groups
Function to resist rotational forces and tilting
Small yellowish glands on the labial mucosa
Aid in attaching the gingiva to the alveolar bone
Functions the same as the alveolar cfg; originate in alveolar bone

44. Midline
Small raised projections where taste buds are located
Middle line of the teeth
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Shaping the tongue during speech - mastication and swallowing

45. What is origin and What is insertion?
The gingiva in the floor of the gingival sulcus that attaches to the enamel
A small projection in the middle of the upper lip
Origin - fixed point - insertion - movable point
Resists intrusive forces that try to push the tooth inwards

46. How is the TMJ supported and what controls their movement?
Small curved lines that run parellel to the CEJ
Band of fibrous tissue which attaches muscle to bone
Ligaments and muscles of mastication
A raised area of tissue laying behind the maxillary central incisors on the hard palate

47. Resonance
Located in a depressed area between the pillars
Where the proximal sides of two teeth come together and touch
Full deep rich sound in nasal cavity
Extends from the medial corner of the eye to the nasal cavity

48. How much saliva is produced daily?
Teeth after cuspids
1500 millimeters
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
The cornerstone of the mouth

49. Transverse Ridge
When cells rapidly increase in number
Duct located on the parotid papilla
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Second teeth next to central incisors

50. Morpho Differentiation
Allow flexibility during mastication - speech
9 weeks thru birth
Forming organ takes shape and resembles the shape of a bell
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors