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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. Nasmyths Membrane
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Rounded depression on a tooth
Orbicularis oris - buccinator - mentalis - zygomatic major
Covering over the enamel that is left over from the epithelium ameloblasts

2. Labial Commissures
Sharp projection on the under surface of the temporal bone
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Corners of the mouth
Intervating the anterior teeth and the labial gingiva

3. Caruncle
Fleshy elevation under the tongue
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Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
The bone that separates the root on a tooth

4. Incisal Edge
Drains the superficial veins of the face and neck into the subclavian vein
The connective tissue of the marginal gingiva
Biting edge of the teeth
Slight ridges on the cervical third of certain teeth that extend mesiodistally

5. Fetus
Mandibular central incisors
The study of the microscopic structure and functions of tissues
9 weeks thru birth
Duct located on the parotid papilla

6. Groove
Small linear depression
The development of different tissues
Enamel forming cells
Substances between cells

7. Muscle origine
The fixed attachment of a muscle
Pulverizing or chewing surface
Molars
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

8. Common Carotid
Covering over the enamel that is left over from the epithelium ameloblasts
Incremental line indicating trauma of birth
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Arteries supplying blood to most of the head and the neck

9. Alveolar Crest Fiber Group
The disc becomes displaced
Linear elevation of the tooth
Joined at the midline and are often referred to as the median Palatine suture
Function to resist rotational forces and tilting

10. Alveolar Crest
Two cortical bone plates that come together between each tooth
Divides the crown and the root
Curve outward
Developmental segment of a tooth

11. What are the 4 extrinsic muscles of the tongue
Genioglossus - hyoglossus - styloglossus - palatoglossus
Tooth emerges from gum tissue and becomes visible
Where the ectoderm layer matures into the enamel
Pointed or rounded mounds on the crown of the tooth

12. What is Ankyloglossia and who can treat it / What is the treatment called?
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Separation of the upper lip ( 1 of 1000 live births)
A condition where the lower frenum attachment is very short/DDS/frenectomy
Functions the same as the alveolar cfg; originate in alveolar bone

13. Maxillary Sinus
Forms a large cavity above the roots of the maxillary molars
Supplies blood to the face and oral cavity
Pulls the hyoid bone and the tongue anteriorly
The cornerstone of the mouth

14. Alveolar Mucosa
The cornerstone of the mouth
Canal or passage for fluid
Trigeminal - facial - glossopharyngeal - hypoglossal
Mucosa that covers the alveolar bone

15. Denticion
Divides the crown and the root
The inner surface of the lips
Joined at the midline and are often referred to as the median Palatine suture
Natural teeth in position

16. Central Incisor
Allow flexibility during mastication - speech
Middle two teeth in the mouth
Sharp projection on the under surface of the temporal bone
Follows the length of the body of the mandible past the last tooth and up to the ramus

17. Embrasure
Forming organ takes shape and resembles the shape of a bell
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Triangular space in the gingival direction when two adjacent teeth are in contact
Draws the hyoid bone superiorly and posteriorly and stabilizes it

18. Mamelons
Follows the inside of the ramus and the body of the mandible
Three bulges on the incisal edge
4 cusps/ bifurcated
Responsible for laying down the enamel matrix into place

19. Gingival Sulcus
The space between the unattached gingiva and the tooth
Functions the same as the alveolar cfg; originate in alveolar bone
Study of the structure and form of the teeth
Drains the Pterygoid plexus of the veins

20. Vermilion Border
Band of fibrous tissue which attaches muscle to bone
The largest of three openings located in the posterior region of the hard palate
Portion of the lips where the skin meets the vermilion zone
Calcified masses of dentin

21. What are the two ways the TMJs move?
Where the ectoderm layer matures into the enamel
Hinge motion and gliding movement
A period of both primary teeth and permeant teeth are in the dentition
A dense tissue covered with mucous membrane that can withstand chewing

22. If a patient receives toxic agents - how long does it take for their sense of taste to return?
10 days
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
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
Smaller branch that ennervates the soft palate uvula and tonsils

23. What is another name for premolars?
Small dark brushes
Full deep rich sound in nasal cavity
Bi-cuspids
Study of prenatal growth and the developing process of an individual

24. Hypercementosis
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
Causes a thickening of the cementum around the apex
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

25. Styloid Process
The bone that separates the root on a tooth
Pulls the hyoid bone and the tongue anteriorly
Sharp projection on the under surface of the temporal bone
Excess dryness of the mouth

26. What are the eight landmarks of the face?
Middle line of the teeth
Stained growth rings in dentin
The slightly raised line extending down the middle of the hard palate
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

27. Convex
To bulge of curve outward
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
H20 - mucin - organic salts and digestive enzymes
Bone that surrounds the root of the tooth

28. Histo Differentation
The layer of dentin that surrounds the pulp
Calcified masses of dentin
The development of different tissues
The largest of three openings located in the posterior region of the hard palate

29. Fissure
The teeth located at the back of the mouth
Located on the inside of the body of the ramus
Resulting from an imperfect union where the lobes come together
Surface away from the midline

30. Palatine Rugae
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Where the proximal sides of two teeth come together and touch
Three bulges on the incisal edge
The ridges that run horizontally across the hard palate behind the incisive papilla

31. Enamel Dysplasia
Occurs in unusual ways and distorted crowns may appear
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Cheek bones--the most breakable bone in the body
When the surface of the teeth becomes grooved

32. Cusp of Caribelli
Permeante teeth replace the primary teeth
Band of fibrous tissue which attaches muscle to bone
A small projection in the middle of the upper lip
Fifth cusp located on the mesial surface lingual surface of maxillary first molars

33. Supplemental Groove
Curve outward
Functions the same as the alveolar cfg; originate in alveolar bone
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Radiates from the developmental groove

34. Osteoclasts
A triangular area located behind the last molar
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Interdental ligament
Forms a large cavity above the roots of the maxillary molars

35. Intercellular Substances
Substances between cells
Set of arches found farther in the back of the throat
Interdental ligament
Canal or passage for fluid

36. External Oblique Ridge
Triangular space in the gingival direction when two adjacent teeth are in contact
4 cusps/ bifurcated
Small grooves noted on some teeth
Follows the length of the body of the mandible past the last tooth and up to the ramus

37. Ameloblast
Mildest form of cleft palate
Week 11
Follows the length of the body of the mandible past the last tooth and up to the ramus
Enamel forming cells

38. How many cusps/ roots do the maxillary first molars have?
Incremental line indicating trauma of birth
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
4/5 cusps/ 3 roots
Assists in elevating the chin

39. Landmarks
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Joined at the midline and are often referred to as the median Palatine suture
The outer edge of the nostril
The connective tissue of the marginal gingiva

40. Maxilla
Largest facial bone with two sections joined at the median suture
Responsible for laying down the enamel matrix into place
Greater - lesser - naso palatine nerves
Tissue covering the alveolar processes

41. Cervical line
Assist in the movement and functioning of the tongue
Divides the crown and the root
Dividing point of a multi-rooted tooth
Ligaments and muscles of mastication

42. Morphology
Acts as anchors between the alveolar bone and the tooth
Pointed or rounded mounds on the crown of the tooth
2 small raised folds of tissue where the lingual frenum attaches
Study of the structure and form of the teeth

43. Interradical Fiber Group
Forms a large cavity above the roots of the maxillary molars
A bony plate covered with keratinized tissue located in the anterior portion of the palate
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
Found only in multi-rooted teeth and resists rotational forces

44. Horizontal Fiber Group
Calcium salts are deposited into formed tooth
Occlusal surface of the posterior tooth
Two vertical extensions of the mandible
Functions the same as the alveolar cfg; originate in alveolar bone

45. Circular Ligament Fiber Groups
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
To dissolve
Bi-cuspids
Circle and tighten the gingival margin around the neck of the tooth

46. Secondary Dentin
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Appears to be loosely attached - covering the alveolar bone.
Substances between cells
Forms after the completion of the apical foramen

47. Parotid Papilla
Two cortical bone plates that come together between each tooth
A flap of tissue on the on the buccal mucosa
Middle two teeth in the mouth
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

48. Proliferation
Where the ectoderm layer matures into the enamel
Drains the floor of the mouth
Supplies blood to the brain and the eyes
The gingiva in the floor of the gingival sulcus that attaches to the enamel

49. Bud stage
Growth from the oral epithelium that gives rise to the tooth buds
The development of different tissues
The outer edge of the nostril
Initiation of the tooth begins

50. What is the purpose of saliva?
Lower arch of the teeth
Elevates the posterior portion of the tongue and narrows the fauces
To lubricate the oral cavity and to moisten food
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins