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Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
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. Lingual
Depresses the tongue
Allow flexibility during mastication - speech
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Inside surface Which is towards the tongue - on anterior teeth

2. Function of Platysma
Portion of the lips that are red
A faint line going from the ala of the nose to the corner of the mouth
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Draws down the mandible and corners of the mouth

3. How many cusps/ roots do the 2/3rd mandibular molars have?
The corners of the mouth where the top and bottom lip meet
Genioglossus - hyoglossus - styloglossus - palatoglossus
4 cusps/ bifurcated
Smaller branch that ennervates the soft palate uvula and tonsils

4. Neonatal line
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Week 11
Incremental line indicating trauma of birth
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

5. Fossa
Rounded depression on a tooth
Outside surface Which is towards the lips
Canal or passage for fluid
Assist in the movement and functioning of the tongue

6. Ala of the Nose
Forms a large cavity above the roots of the maxillary molars
Wearing away of the incisal or occlusal surfaces of the tooth
The outer edge of the nostril
Of or pertaining to area surrounding naval cavity

7. Inferior Nasal Conchae
Small raised projections where taste buds are located
Dentin found between the tubules
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Scroll like bones outside the nasal cavaties

8. Nasmyths Membrane
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Genioglossus - hyoglossus - styloglossus - palatoglossus
What divides the tongue in half and runs from the base to the tip of the tongue
Covering over the enamel that is left over from the epithelium ameloblasts

9. Resonance
A period of both primary teeth and permeant teeth are in the dentition
Full deep rich sound in nasal cavity
Dividing point of a multi-rooted tooth
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

10. Xygote
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Developmental segment of a tooth
Palatoglossus - palatopharyngeal
When cells rapidly increase in number

11. Median Sulcus
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Portion of the lips that are red
What divides the tongue in half and runs from the base to the tip of the tongue
Middle line of the teeth

12. Gland
Of or pertaining to area surrounding naval cavity
Cluster of tissue that manufactures and secrets fluid
Natural teeth in position
Forms after the completion of the apical foramen

13. Alveolar Mucosa
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Covering over the enamel that is left over from the epithelium ameloblasts
Mucosa that covers the alveolar bone
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

14. What teeth are removed if overcrowding occurs?
Two weeks thru 8th week
Bicuspids
Occurs in unusual ways and distorted crowns may appear
Two cortical bone plates that come together between each tooth

15. Dental Sac
Draws down the mandible and corners of the mouth
An enclosed area that matures into dentin - cementum and pulp
Pointed or rounded mounds on the crown of the tooth
The line of demarcation between the attached gingiva and the marginal gingiva

16. Interradical Fiber Group
Place where the groove comes together or fissures cross
Hinge motion and gliding movement
Found only in multi-rooted teeth and resists rotational forces
Extends from the mucogingival junction to the gingival groove

17. Mesenchyme Tissue
Study of prenatal growth and the developing process of an individual
A dense tissue covered with mucous membrane that can withstand chewing
To bulge of curve outward
Primary embryonic mesoderm layer that develops during the morpho differentiation period

18. Lingual Veins
Sharp projection on the under surface of the temporal bone
Peg shaped crown with a smooth surface
Origin - fixed point - insertion - movable point
Bluish veins that run the length of the tongue

19. Maxillary Artery
Largest of the branches of the external carotid artery; supplies facial structure
Origin - fixed point - insertion - movable point
Pointed or rounded mounds on the crown of the tooth
Responsible for laying down the enamel matrix into place

20. Lobes
The development of different tissues
The disc becomes displaced
Teeth after cuspids
Developmental segment of a tooth

21. Odontogenesis
Origin of the tooth
Follows the inside of the ramus and the body of the mandible
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Enamel forming cells

22. Ameloblast
Outside surface Which is towards the lips
Triferacated
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Enamel forming cells

23. Function of mylohyoid
Raised vertical folds of tissue on the lateral border of the tongue
Elevated are of enamel that forms the Mesial and distal borders
Assist in depressing the mandible and elevating the tongue
The layer of dentin that surrounds the pulp

24. Lines of Retzius
Canal or passage for fluid
H20 - mucin - organic salts and digestive enzymes
Incremental lines around the layers of the enamel matrix
(free gingiva) surrounds the teeth

25. Exfoliated
Radiates from the developmental groove
Secrete saliva to assist in process of digestion
Shed from the oral cavity
Oval depression of temporal bone in condyloid process

26. Hypercementosis
Causes a thickening of the cementum around the apex
Mastication - aids in speech - influence facial structure - chewing surfaces
Used to pulverize food
Tubules that pass through the entire surface of the dentin

27. Interdental Ligament Group
Resist rotational forces and hold teeth in inter-proximal contact
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
The outer edge of the nostril
Orbicularis oris - buccinator - mentalis - zygomatic major

28. Labial-Mental Groove
Layers of tooth tissue become calcified
Place where the groove comes together or fissures cross
The groove below the lower lips that separates the lips from the chin
Small bony projections surrounding the lingual foramen

29. Cleft Lip
Dentin found between the tubules
Separation of the upper lip ( 1 of 1000 live births)
Tooth emerges from gum tissue and becomes visible
Mildest form of cleft palate

30. Periodontium
A line of demarcation between the attached gingiva and alveolar mucosa
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Set of arches found farther in the back of the throat
Growth from the oral epithelium that gives rise to the tooth buds

31. Philtrum
Canal or passage for fluid
The development of different tissues
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
A shallow v-shaped depression located below the bottom of the nose and above the lips

32. Stenson's Duct
Separates the developing oral cavities from the nasal cavities
Duct located on the parotid papilla
Week 11
Bi-cuspids

33. Incisive Papilla
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Forms the bulk of the tooth
The deepest point of the vestibule
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars

34. Quadrants
Quarters of the teeth
Substances between cells
Smaller branch that ennervates the soft palate uvula and tonsils
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

35. Fetal Alcohol Syndrome symptons
Primary and permanent
Molars
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Small head - low nasal bridge - thin upper lip - small mandible

36. Marginal GIngiva
Substances between cells
(free gingiva) surrounds the teeth
Chewing and swallowing food
Inner portion of the enamel rod

37. Vermilion Zone
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Portion of the lips that are red
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Greater - lesser - naso palatine nerves

38. Labial
Ligaments and muscles of mastication
Outside surface Which is towards the lips
Portion covered with cementum
Surface away from the midline

39. Tubercle of the Lip
Excess bone formations under the tongue on the alvellar bone
A small projection in the middle of the upper lip
6 years old
The mandibular molars

40. Circumvallate Papillae
The cornerstone of the mouth
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Incremental lines around the layers of the enamel matrix
Calcium salts are deposited into formed tooth

41. Function of Sternocleidomastoid
Functions the same as the alveolar cfg; originate in alveolar bone
Greater - lesser - naso palatine nerves
Assists in elevating the chin
Separation of the upper lip ( 1 of 1000 live births)

42. Enamel Tufts
Duct located on the parotid papilla
Small dark brushes
The layer of dentin that surrounds the pulp
Healthy gingival tissue with an orange texture

43. TMJ bones are bathed In what solution?
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Synovial fluid
Of or pertaining to area surrounding naval cavity
Corners of the mouth

44. Internal Carotid Artery
Shed from the oral cavity
Supplies blood to the brain and the eyes
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
The layer of dentin that surrounds the pulp

45. What is origin and What is insertion?
Layers of tooth tissue become calcified
Cheek bones--the most breakable bone in the body
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Origin - fixed point - insertion - movable point

46. Greater Palatine Nerve
Circle and tighten the gingival margin around the neck of the tooth
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

47. Pulpitis
Smaller branch that ennervates the soft palate uvula and tonsils
Healthy gingival tissue with an orange texture
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
When the tissue becomes inflamed

48. Groove
Quarters of the teeth
Small linear depression
Used to pulverize food
Act to maintain the gingival integrity of the marginal gingiva

49. Mesial
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Band of fibrous tissue which attaches bone to bone
Trigeminal - facial - glossopharyngeal - hypoglossal
Surface towards the midline

50. Mandible Arch
Mandibular central incisors
Lower arch of the teeth
A horseshoe shaped groove that follow the curve of the dental arch
Supplies blood to the face and oral cavity