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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. Osteoclasts
Small yellowish glands on the labial mucosa
Fleshy elevation under the tongue
Three cusps/ trifurcated
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

2. What are the 4 muscles of the floor of the mouth?
Biting edge of the teeth
When the surface of the teeth becomes grooved
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Digstric - Mylohyoid - stylohyoid - geniohyoid

3. What is the function of the buccle nerve branch?
Supplies blood to the face and oral cavity
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Small linear depression
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars

4. Lacrimal Bones
Resist rotational forces and hold teeth in inter-proximal contact
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Sharp projection on the under surface of the temporal bone
Branches off the inferior alveolar artery before intering the mandibular canal

5. Alveolus
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Bone that surrounds the root of the tooth
A junction or center of veins that directly or indirectly drain a vast area
Surface away from the midline

6. Convects
The internal surface at the center of the mandible
Causes a thickening of the cementum around the apex
Curve outward
Clear fluid secreted by the salivary and mucous glands throughout the mouth

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

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8. Secondary palate
Responsible for laying down the enamel matrix into place
6 years old
The deepest point of the vestibule
Forms the remaining 2/3 of the hard and soft palate uvula

9. Histo Differentation
The development of different tissues
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
The disc becomes displaced
Synovial fluid

10. Lamina Dura
Appears to be loosely attached - covering the alveolar bone.
A line that represents the alveolus bone lining the socket
(free gingiva) surrounds the teeth
Small head - low nasal bridge - thin upper lip - small mandible

11. Odontoblast
Band of fibrous tissue which attaches muscle to bone
Tissue covering the alveolar processes
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Cells that form dentin

12. Ridge
Linear elevation of the tooth
Acts as anchors between the alveolar bone and the tooth
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Palatoglossus - palatopharyngeal

13. Cusp of Caribelli
Substances between cells
A shallow v-shaped depression located below the bottom of the nose and above the lips
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Set of arches found farther in the back of the throat

14. What is saliva made of?
Smaller branch that ennervates the soft palate uvula and tonsils
Greater - lesser - naso palatine nerves
Supplies blood to the roots and periodontal ligaments of the interior teeth
H20 - mucin - organic salts and digestive enzymes

15. Function of mylohyoid
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Assist in depressing the mandible and elevating the tongue
Occlusal surface of the posterior tooth
Excess bone in the middle of the palate

16. Contact Area
Initiation of the tooth begins
Where the proximal sides of two teeth come together and touch
Bifurcated/ 5 cusps
Bony projection found on the bottom border of the temporal bone

17. Imbracation Lines
Small curved lines that run parellel to the CEJ
Linear elevation of the tooth
The gingiva in the floor of the gingival sulcus that attaches to the enamel
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

18. Dental Arteries
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
Lower arch of the teeth
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

19. Retromolar Area
Origin - fixed point - insertion - movable point
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Dividing point of a multi-rooted tooth
A triangular area located behind the last molar

20. What is another name for premolars?
Responsible for laying down the enamel matrix into place
6 months/3years
Bi-cuspids
The gingiva in the floor of the gingival sulcus that attaches to the enamel

21. When do the primary teeth begin erupting and are fully erupted?
A horseshoe shaped groove that follow the curve of the dental arch
Folds of tissue to the the lingual veins
A dense tissue covered with mucous membrane that can withstand chewing
6 months/3years

22. External Jugular Vein
Drains the superficial veins of the face and neck into the subclavian vein
Bifurcated/ 5 cusps
Extends from the mucogingival junction to the gingival groove
Shed from the oral cavity

23. Alveolar Crest
Two cortical bone plates that come together between each tooth
Forming organ takes shape and resembles the shape of a bell
An extension of an unattached gingiva and the tooth
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids

24. Buccal
Outside surface Which is towards the cheek - on posterior teeth
Occurs in unusual ways and distorted crowns may appear
2 to 3 pints
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

25. Contour Lines of Owen
Radiates from the developmental groove
Permeante teeth replace the primary teeth
Demonstrates a disturbance in the body metabolism
Hinge motion and gliding movement

26. Cleft Lip
Looking at the border of the tongue
Forms after the completion of the apical foramen
What divides the tongue in half and runs from the base to the tip of the tongue
Separation of the upper lip ( 1 of 1000 live births)

27. When do the tooth buds appear?
Growth from the oral epithelium that gives rise to the tooth buds
A condition where the lower frenum attachment is very short/DDS/frenectomy
Week 11
When the dentin is exposed

28. What are the characteristics of deciduous teeth?
An enclosed area that matures into dentin - cementum and pulp
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Separates the developing oral cavities from the nasal cavities

29. Enamel Lamellae
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Smaller branch that ennervates the soft palate uvula and tonsils
Narrow long enamel tuft
Full deep rich sound in nasal cavity

30. Bud stage
Teeth after cuspids
Initiation of the tooth begins
Ligaments and muscles of mastication
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

31. Odontal Fiber Groups
Assist in depressing the mandible and elevating the tongue
Trigeminal nerve--because it ennervates the maxilla and the mandible
Allow flexibility during mastication - speech
Divides the crown and the root

32. Posterior Superior Alveolar Nerve
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Bony projection found on the bottom border of the temporal bone
Responsible for laying down the enamel matrix into place

33. Hyoid Bone
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
Resulting from an imperfect union where the lobes come together
Molaris meaning millstone
Mandibular central incisors

34. Imbrication lines
Formed by the uniting of lobes during development of crown
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Extends from the medial corner of the eye to the nasal cavity
Sharp projection on the under surface of the temporal bone

35. Alveolar Mucosa
Mucosa that covers the alveolar bone
Set of arches found farther in the back of the throat
Platysma - trapezius - sternocleidomastoid
10 days

36. Gestational period
Two weeks thru 8th week
6 months/3years
The development of different cells
9 months (5 months ultrasound to tell sex)

37. Lesser Palatine Nerve
Smaller branch that ennervates the soft palate uvula and tonsils
Found only in multi-rooted teeth and resists rotational forces
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
Sharp projection on the under surface of the temporal bone

38. Stomedeum
Primitive mouth
Separation of the upper lip ( 1 of 1000 live births)
Curve outward
Place where the groove comes together or fissures cross

39. Ala of the Nose
When the surface of the teeth becomes grooved
Stained growth rings in dentin
The outer edge of the nostril
Inside of the maxillary teeth

40. Fungiform Papillae
Primary and permanent
A line of demarcation between the attached gingiva and alveolar mucosa
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Papillae that give the tongue the strawberry effect

41. Agenesis
Primary and permanent
A shallow v-shaped depression located below the bottom of the nose and above the lips
Greater - lesser - naso palatine nerves
Occurs in unusual ways and distorted crowns may appear

42. Mastoid process
A line of demarcation between the attached gingiva and alveolar mucosa
Tubules that pass through the entire surface of the dentin
Bony projection found on the bottom border of the temporal bone
Disk that acts like a cushion between the temporal bone and the condyloid process

43. Resonance
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Formed by the uniting of lobes during development of crown
Full deep rich sound in nasal cavity
The crown of the tooth that is nearest the incisal edge near the anterior tooth

44. Philtrum
Tooth emerges from gum tissue and becomes visible
4/5 cusps/ 3 roots
A shallow v-shaped depression located below the bottom of the nose and above the lips
Folds of tissue that extend horizontally from the uvula to the base of the tongue

45. Landmarks
Oval structures that are located on the dorsal surface of the tongue
Curve outward
Resists intrusive forces that try to push the tooth inwards
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

46. Interradical Fiber Group
Bluish veins that run the length of the tongue
(free gingiva) surrounds the teeth
Found only in multi-rooted teeth and resists rotational forces
Forms the remaining 2/3 of the hard and soft palate uvula

47. Epithelial Attachment
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Fleshy elevation under the tongue

48. Enamel Dysplasia
Cut - tear - and grind food
Tissue covering the alveolar processes
When the surface of the teeth becomes grooved
Forms a large cavity above the roots of the maxillary molars

49. Peritubular Dentin
Creates the wall of the dentinal tubule
Scroll like bones outside the nasal cavaties
Occlusal surface of the posterior tooth
Secrete saliva to assist in process of digestion

50. Facial Vein
Shed from the oral cavity
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Study of prenatal growth and the developing process of an individual
Drains the facial structures beginning near the eye and descending toward the mandible