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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. Maxillary Artery
A flap of tissue on the on the buccal mucosa
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
The teeth located at the back of the mouth
Largest of the branches of the external carotid artery; supplies facial structure

2. What are the four main functions of deciduous teeth?
Divides the crown and the root
Mastication - aids in speech - influence facial structure - chewing surfaces
Act to maintain the gingival integrity of the marginal gingiva
Pointed elongations of the pulp

3. Lacrimal Bones
Middle line of the teeth
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
A line that represents the alveolus bone lining the socket
Triferacated

4. What are the eight landmarks of the face?
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Portion of the root seen in the oral cavity
An extension of an unattached gingiva and the tooth
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

5. Maxillary Nerve Branch
Surface towards the midline
Maxillary third molar
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Origin of the tooth

6. Angle of the Mandible
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Supplies blood to the roots and periodontal ligaments of the molars and premolars
The space between the unattached gingiva and the tooth
Where the ramus meets the body of the mandible on the outside border

7. Dental Lamina
Growth from the oral epithelium that gives rise to the tooth buds
Two
Portion of the lips where the skin meets the vermilion zone
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

8. Morpho differentiation
Pointed or rounded mounds on the crown of the tooth
Bone that surrounds the root of the tooth
The development of different forms
Canal or passage for fluid

9. Deep Facial Veins
Small head - low nasal bridge - thin upper lip - small mandible
The groove below the lower lips that separates the lips from the chin
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Assist in depressing the mandible and elevating the tongue

10. Circumvallate Papillae
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Bony projection found on the bottom border of the temporal bone

11. What are the 4 pairs of muscles of mastication!
9 months (5 months ultrasound to tell sex)
Creates the wall of the dentinal tubule
Curve outward
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

12. Alveolar Mucosa
A bony projection that separates each socket
Appears to be loosely attached - covering the alveolar bone.
To dissolve
Where the ectoderm layer matures into the enamel

13. Mamelons
Three bulges on the incisal edge
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Full deep rich sound in nasal cavity
Drains the superficial veins of the face and neck into the subclavian vein

14. Posterior Superior Alveolar Nerve
Sharp projection on the under surface of the temporal bone
Outside surface Which is towards the lips
Synovial fluid
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar

15. Cervical line
Small bony projections surrounding the lingual foramen
Second teeth next to central incisors
Separation of the upper lip ( 1 of 1000 live births)
Divides the crown and the root

16. Cleft Uvula
Mildest form of cleft palate
Found only in multi-rooted teeth and resists rotational forces
The layer of dentin that surrounds the pulp
Outside surface Which is towards the cheek - on posterior teeth

17. Cementoblast
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Cells that form cementum
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Outside surface Which is towards the cheek - on posterior teeth

18. What are the two ways the TMJs move?
Origin - fixed point - insertion - movable point
Papillae that give the tongue the strawberry effect
Hinge motion and gliding movement
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar

19. Vestibule Fornix
The deepest point of the 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
Shaping the tongue during speech - mastication and swallowing
The development of different forms

20. Histology
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
The study of the microscopic structure and functions of tissues
Extends from the medial corner of the eye to the nasal cavity
12 years

21. Histo Differentation
Where the proximal sides of two teeth come together and touch
Primitive mouth
Assist in the movement and functioning of the tongue
The development of different tissues

22. Submandibular Glands

23. Resonance
Digstric - Mylohyoid - stylohyoid - geniohyoid
Bony projection found on the bottom border of the temporal bone
Full deep rich sound in nasal cavity
Opening in the mouth below the orbit on the maxillary bone

24. Mastoid process
Bony projection found on the bottom border of the temporal bone
Intervating the anterior teeth and the labial gingiva
Wings of the sphenoid bone
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

25. How many teeth are in the permanent set of teeth?
Opening for the ear
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Small head - low nasal bridge - thin upper lip - small mandible
32

26. What are the only permeant teeth that are not succedaneous?
Molars
Cells that form dentin
Supplies blood to the brain and the eyes
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

27. Gestational period
9 months (5 months ultrasound to tell sex)
Small curved lines that run parellel to the CEJ
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Linear elevation of the tooth

28. Interradicular Septum
Upper arch of the teeth
Found near the cementoenamel junction
The bone that separates the root on a tooth
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

29. Dentinal Fluid
Study of prenatal growth and the developing process of an individual
Tissue fluid surrounding the cell membrane of the odontoblast
Set of arches found farther in the back of the throat
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

30. Lobes
Developmental segment of a tooth
Teeth after cuspids
A pocket formed by the soft tissue of cheeks and gingiva
Tissue fluid surrounding the cell membrane of the odontoblast

31. Incisive Papilla
Digstric - Mylohyoid - stylohyoid - geniohyoid
Excess bone in the middle of the palate
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Cells that form cementum

32. What ligament is retained the longest during periodontal disease?
Interdental ligament
Dentin found between the tubules
Cluster of tissue that manufactures and secrets fluid
Located on the inside of the body of the ramus

33. What are the 12 landmarks of the oral cavity?

34. Apposition
Calcified masses of dentin
Calcium salts are deposited into formed tooth
Greater - lesser - naso palatine nerves
Composed of mucosa and surrounds the necks of the teeth

35. Calcification
Quarters of the teeth
Layers of tooth tissue become calcified
Located behind the ramus of the mandible and branches into five arteries
Wings of the sphenoid bone

36. Cervical Third
The development of different cells
Greater - lesser - naso palatine nerves
The area on the crown of the tooth that is nearest the gingival
Fifth cusp located on the mesial surface lingual surface of maxillary first molars

37. Greater Palatine Foramen
Supportive fibers that anchor the tooth to the bone
The largest of three openings located in the posterior region of the hard palate
Follows the inside of the ramus and the body of the mandible
An enclosed area that matures into dentin - cementum and pulp

38. Fossa
Rounded depression on a tooth
Two vertical extensions of the mandible
Small curved lines that run parellel to the CEJ
Supplies blood to the brain and the eyes

39. How many cusps/ roots do the maxillary first molars have?
Maxillary first molar
Smaller branch that ennervates the soft palate uvula and tonsils
4/5 cusps/ 3 roots
Composed of mucosa and surrounds the necks of the teeth

40. Develop Mental Groove
Formed by the uniting of lobes during development of crown
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
A triangular area located behind the last molar
Compact bone plate of the facial and lingual surfaces

41. Agenesis
Occurs in unusual ways and distorted crowns may appear
Tissue covering the alveolar processes
H20 - mucin - organic salts and digestive enzymes
The connective tissue of the marginal gingiva

42. Lingual Frenum
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
A line of tissue that extends from the tongue to the floor of the mouth
The first predentin that is formed and matures within the tube

43. What teeth are removed if overcrowding occurs?
Triferacated
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Bicuspids
Cheek bones--the most breakable bone in the body

44. Morpho Differentiation
Maxillary third molar
Forming organ takes shape and resembles the shape of a bell
Of or pertaining to area surrounding naval cavity
Quarters of the teeth

45. What is the function of the buccle nerve branch?
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Where the ectoderm layer matures into the enamel
Cells that form cementum
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

46. Convects
Forms the bulk of the tooth
Curve outward
Composed of mucosa and surrounds the necks of the teeth
Acts as anchors between the alveolar bone and the tooth

47. Anatomical root
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Portion covered with cementum
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
The inner surface of the cheeks

48. Mastication
Chewing and swallowing food
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
The largest of the salivary glands which lie just below and in front of the ear
When the dentin is exposed

49. How many roots/ cusps does the mandibular first molar have?
Mandibular central incisors
The internal surface at the center of the mandible
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
Bifurcated/ 5 cusps

50. Concave
Indented
Tubules that pass through the entire surface of the dentin
Portion covered with cementum
A horseshoe shaped groove that follow the curve of the dental arch