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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. Deep Facial Veins
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Tooth emerges from gum tissue and becomes visible
Cheek bones--the most breakable bone in the body
Trigeminal - facial - glossopharyngeal - hypoglossal

2. Dentoperiosteal Fiber Groups
Supportive fibers that anchor the tooth to the bone
The moveable attachment of the muscle
Divides the crown and the root
The deepest point of the vestibule

3. Maxillary Sinus
Portion of the root seen in the oral cavity
Forms a large cavity above the roots of the maxillary 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
Convex area on the lingual surface near gingiva

4. Incisive Arteries
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Supplies blood to the roots and periodontal ligaments of the interior teeth
Bone that surrounds the root of the tooth
Incremental lines around the layers of the enamel matrix

5. Fetal Alcohol Syndrome symptons
The ridges that run horizontally across the hard palate behind the incisive papilla
Forms the remaining 2/3 of the hard and soft palate uvula
Small head - low nasal bridge - thin upper lip - small mandible
Fifth cusp located on the mesial surface lingual surface of maxillary first molars

6. How can you tell if someone has cancer by looking at the tongue?
Appears to be loosely attached - covering the alveolar bone.
Set of arches found farther in the back of the throat
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Looking at the border of the tongue

7. Periodontal Ligaments
Resulting from an imperfect union where the lobes come together
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Formed by the fibroblast cells and secures the tooth in the socket
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct

8. Pulp horns
Cells develop into different tissues
Biting edge of the teeth
Circle and tighten the gingival margin around the neck of the tooth
Pointed elongations of the pulp

9. Gingival Groove
A line that represents the alveolus bone lining the socket
The line of demarcation between the attached gingiva and the marginal gingiva
The development of different tissues
Largest division of the trigeminal nerve

10. What are the 3 branches of the mandibular nerve branch?
4/5 cusps/ 3 roots
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Buccal - lingual - and inferior alveolar
Constricts the nasopharyngeal passage and elevates the larynx

11. Morpho differentiation
Located in a depressed area between the pillars
The development of different forms
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Full deep rich sound in nasal cavity

12. Maxillary Nerve Branch
Wearing away of the incisal or occlusal surfaces of the tooth
The area on the crown of the tooth that is nearest the gingival
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Orbicularis oris - buccinator - mentalis - zygomatic major

13. What is the purpose of saliva?
Wearing away of the incisal or occlusal surfaces of the tooth
Located in a depressed area between the pillars
To lubricate the oral cavity and to moisten food
4/5 cusps/ 3 roots

14. How many teeth are in the Primary teeth?
Forms a large cavity above the roots of the maxillary molars
A bony projection that separates each socket
20
Oval depression of temporal bone in condyloid process

15. TMJ bones are bathed In what solution?
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Formed by the uniting of lobes during development of crown
The teeth located at the back of the mouth
Synovial fluid

16. Imbrication lines
Forming organ takes shape and resembles the shape of a bell
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
The portion of the tooth that meets the gingiva
Slight ridges on the cervical third of certain teeth that extend mesiodistally

17. Fimbriated Folds
Folds of tissue to the the lingual veins
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
Forms the bulk of the tooth
The outer edge of the nostril

18. Morphology
Origin of the tooth
Study of the structure and form of the teeth
When cells rapidly increase in number
Looking at the border of the tongue

19. lst and second premolars
The slightly raised line extending down the middle of the hard palate
Formed by the fibroblast cells and secures the tooth in the socket
Teeth after cuspids
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

20. Nasal-Labial Groove
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
The line of demarcation between the attached gingiva and the marginal gingiva
Short tubules that seem to crossover to the enamel
A faint line going from the ala of the nose to the corner of the mouth

21. Interradical Fiber Group
Responsible for laying down the enamel matrix into place
Found only in multi-rooted teeth and resists rotational forces
Canal or passage for fluid
Study of the structure and form of the teeth

22. Gums
Found only in multi-rooted teeth and resists rotational forces
Inside of the maxillary teeth
Intervating the anterior teeth and the labial gingiva
Tissue covering the alveolar processes

23. Median Sulcus
What divides the tongue in half and runs from the base to the tip of the tongue
A small projection in the middle of the upper lip
Fleshy elevation under the tongue
Clear fluid secreted by the salivary and mucous glands throughout the mouth

24. Labial-Mental Groove
The groove below the lower lips that separates the lips from the chin
A line of demarcation between the attached gingiva and alveolar mucosa
Bifurcated/ 5 cusps
Shaping the tongue during speech - mastication and swallowing

25. Cervical Third
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Tissue covering the alveolar processes
The area on the crown of the tooth that is nearest the gingival
Mucosa that covers the alveolar bone

26. When does the maxillary second molar erupt?
12 years
Forms into the inner lining of the oral cavitiy and enamel of the teeth
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
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

27. Nasolacrimal groove
A condition where the lower frenum attachment is very short/DDS/frenectomy
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Extends from the medial corner of the eye to the nasal cavity

28. What are the 4 pairs of muscles of mastication!
H20 - mucin - organic salts and digestive enzymes
Forms the remaining 2/3 of the hard and soft palate uvula
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

29. Function of Palatoglossus
When the surface of the teeth becomes grooved
A flap of tissue on the on the buccal mucosa
Creates the wall of the dentinal tubule
Elevates the posterior portion of the tongue and narrows the fauces

30. If Palate not fused
Palatoglossus - palatopharyngeal
Portion of the lips where the skin meets the vermilion zone
Narrow long enamel tuft
Teeth will not erupt in proper position

31. Contour Lines of Owen
Chewing and swallowing food
Demonstrates a disturbance in the body metabolism
Teeth will not erupt in proper position
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

32. Cusp of Caribelli
The largest of three openings located in the posterior region of the hard palate
Acts as anchors between the alveolar bone and the tooth
Small raised projections where taste buds are located
Fifth cusp located on the mesial surface lingual surface of maxillary first molars

33. Denticion
4 cusps/ bifurcated
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
A period of both primary teeth and permeant teeth are in the dentition
Natural teeth in position

34. Supplemental Groove
Tooth emerges from gum tissue and becomes visible
Radiates from the developmental groove
The first predentin that is formed and matures within the tube
Forms into dentin - cementum and pulp of the teeth

35. Perikymata
Small grooves noted on some teeth
Outside surface Which is towards the lips
Platysma - trapezius - sternocleidomastoid
Clear fluid secreted by the salivary and mucous glands throughout the mouth

36. Oblique Ridge
Where the ectoderm layer matures into the enamel
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

37. Develop Mental Groove
The teeth located at the back of the mouth
Orbicularis oris - buccinator - mentalis - zygomatic major
4 cusps/ bifurcated
Formed by the uniting of lobes during development of crown

38. Labial
Cheek bones--the most breakable bone in the body
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Outside surface Which is towards the lips
Platysma - trapezius - sternocleidomastoid

39. Marginal GIngiva
(free gingiva) surrounds the teeth
A line of demarcation between the attached gingiva and alveolar mucosa
Substances between cells
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

40. Facial Artery
Bluish veins that run the length of the tongue
Cells develop into different tissues
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
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

41. Ridge
Extreme variations from the norm
Linear elevation of the tooth
The ridges that run horizontally across the hard palate behind the incisive papilla
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

42. Lacrimal Bones
(free gingiva) surrounds the teeth
When cells rapidly increase in number
A small projection in the middle of the upper lip
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

43. Palatine Rugae
The ridges that run horizontally across the hard palate behind the incisive papilla
The line of demarcation between the attached gingiva and the marginal gingiva
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
The cornerstone of the mouth

44. How much saliva do the salivary glands produce in 24 hours?
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Assists in elevating the chin
2 to 3 pints

45. Horizontal Fiber Group
Functions the same as the alveolar cfg; originate in alveolar bone
Covering over the enamel that is left over from the epithelium ameloblasts
Primitive mouth
Lining covers inside of the oral cavity

46. Histology
Bi-cuspids
Calcium salts are deposited into formed tooth
The study of the microscopic structure and functions of tissues
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

47. Mandible Arch
Scroll like bones outside the nasal cavaties
Outside surface Which is towards the cheek - on posterior teeth
Lower arch of the teeth
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

48. Transverse Ridge
The fixed attachment of a muscle
Forming organ takes shape and resembles the shape of a bell
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

49. Circumvallate Papillae
A shallow v-shaped depression located below the bottom of the nose and above the lips
Largest facial bone with two sections joined at the median suture
Triferacated
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

50. Uvula
Trigeminal - facial - glossopharyngeal - hypoglossal
A projection that extends off the back of the soft palate
Two vertical extensions of the mandible
Supplies blood to the face and oral cavity