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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. What is saliva made of?
Extends from the medial corner of the eye to the nasal cavity
H20 - mucin - organic salts and digestive enzymes
Forms the bulk of the tooth
Small curved lines that run parellel to the CEJ

2. Fossa
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
4th week
Rounded depression on a tooth
Triangular space in the gingival direction when two adjacent teeth are in contact

3. What are the 4 cranial nerves that ennervate the face and oral cavity
Opening for the ear
Bicuspids
Outside surface Which is towards the lips
Trigeminal - facial - glossopharyngeal - hypoglossal

4. What is the purpose of permanent teeth?
Cells that form dentin
Cut - tear - and grind food
Conception thru the first two weeks
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

5. What is the largest cranial nerve and the most important to dental auxillaries and why?
Cells that form dentin
Genioglossus - hyoglossus - styloglossus - palatoglossus
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Trigeminal nerve--because it ennervates the maxilla and the mandible

6. Mandibular Artery
Located behind the ramus of the mandible and branches into five arteries
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Rounded depression on a tooth
To lubricate the oral cavity and to moisten food

7. External Auditory Meatus
Convex area on the lingual surface near gingiva
Excess bone formations under the tongue on the alvellar bone
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
Opening for the ear

8. Maxillary Nerve Branch
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Interdental ligament
The disc becomes displaced
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

9. Posterior Superior Alveolar Nerve
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Where the ramus meets the body of the mandible on the outside border
Resists intrusive forces that try to push the tooth inwards
Layers of tooth tissue become calcified

10. Interradicular Septum
Tubules that pass through the entire surface of the dentin
Platysma - trapezius - sternocleidomastoid
The bone that separates the root on a tooth
Slight ridges on the cervical third of certain teeth that extend mesiodistally

11. Maxillary Sinus
Assists in elevating the chin
Forms a large cavity above the roots of the maxillary molars
Bi-cuspids
Mildest form of cleft palate

12. Periodontal Ligaments
Used to pulverize food
Formed by the fibroblast cells and secures the tooth in the socket
Portion of the root seen in the oral cavity
Slight ridges on the cervical third of certain teeth that extend mesiodistally

13. Odontogenesis
Middle two teeth in the mouth
A small projection in the middle of the upper lip
Origin of the tooth
Largest facial bone with two sections joined at the median suture

14. Evanesce
Two
Substances between cells
To dissolve
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

15. Buckle groove
Separation of the upper lip ( 1 of 1000 live births)
Tooth emerges from gum tissue and becomes visible
Where the ramus meets the body of the mandible on the outside border
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

16. External Carotid Artery
Third tooth from the midline
Substances between cells
Supplies blood to the face and oral cavity
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

17. Genial Tubercles
Joined at the midline and are often referred to as the median Palatine suture
Small bony projections surrounding the lingual foramen
Shed from the oral cavity
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle

18. Mylohyoid Artery
Cheek bones--the most breakable bone in the body
Substances between cells
Molars
Branches off the inferior alveolar artery before intering the mandibular canal

19. How is the TMJ supported and what controls their movement?
Ligaments and muscles of mastication
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Cells that form cementum
Developmental segment of a tooth

20. Symphysis
The moveable attachment of the muscle
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
A projection that extends off the back of the soft palate
Largest of the branches of the external carotid artery; supplies facial structure

21. What are the 4 maxillary nerve branches?
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Act to maintain the gingival integrity of the marginal gingiva
Molaris meaning millstone
Papillae that give the tongue the strawberry effect

22. Occlusion third
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
10 days
Opening for the ear
Occlusal surface of the posterior tooth

23. Imbritation Lines of Von Eboner
Small linear depression
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Stained growth rings in dentin
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

24. Succedaneous teeth
Platysma - trapezius - sternocleidomastoid
Where the ramus meets the body of the mandible on the outside border
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Permeante teeth replace the primary teeth

25. Pulp horns
Forming organ takes shape and resembles the shape of a bell
Cut - tear - and grind food
Pointed elongations of the pulp
Vertical groove on the midline of the upper lip

26. Inferior Nasal Conchae
Enamel is thinner - pulp chamber is smaller -
Scroll like bones outside the nasal cavaties
A small projection in the middle of the upper lip
Bone that surrounds the root of the tooth

27. What are the characteristics of deciduous teeth?
The disc becomes displaced
Growth from the oral epithelium that gives rise to the tooth buds
Trigeminal - facial - glossopharyngeal - hypoglossal
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

28. Cleft Palate
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
A dense tissue covered with mucous membrane that can withstand chewing
Tissue covering the alveolar processes
Resists forces that try to pull the tooth outward

29. Marginal Ridges
6 months/3years
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Elevated are of enamel that forms the Mesial and distal borders
Healthy gingival tissue with an orange texture

30. Posterior Tonsillar Pillar
Cut - tear - and grind food
A line that represents the alveolus bone lining the socket
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Set of arches found farther in the back of the throat

31. What are the eight landmarks of the face?
Forms into dentin - cementum and pulp of the teeth
A dense tissue covered with mucous membrane that can withstand chewing
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Constricts the nasopharyngeal passage and elevates the larynx

32. Function of Geneoglossus?
Resists forces that try to pull the tooth outward
Retracts or depresses the tongue
Peg shaped crown with a smooth surface
When the surface of the teeth becomes grooved

33. Vermilion Zone
Platysma - trapezius - sternocleidomastoid
Portion of the lips that are red
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Looking at the border of the tongue

34. Papilla
Smaller branch that ennervates the soft palate uvula and tonsils
Tubules that pass through the entire surface of the dentin
2 to 3 pints
Small raised projections where taste buds are located

35. Circumpulpal Dentin
Draws down the mandible and corners of the mouth
The layer of dentin that surrounds the pulp
Two weeks thru 8th week
Elevates the posterior portion of the tongue and narrows the fauces

36. Embrasure
Triangular space in the gingival direction when two adjacent teeth are in contact
Formed by the uniting of lobes during development of crown
6 years old
Hinge motion and gliding movement

37. Internal Oblique Ridge
Three bulges on the incisal edge
Follows the inside of the ramus and the body of the mandible
Incremental line indicating trauma of birth
6 years old

38. Supplemental Groove
Radiates from the developmental groove
The fixed attachment of a muscle
The first predentin that is formed and matures within the tube
Fleshy elevation under the tongue

39. Philtrum
Wearing away of the incisal or occlusal surfaces of the tooth
A shallow v-shaped depression located below the bottom of the nose and above the lips
The groove below the lower lips that separates the lips from the chin
Tissue fluid surrounding the cell membrane of the odontoblast

40. Proliferation
Where the ectoderm layer matures into the enamel
Lift the hyoid bone and assist in opening the mouth
Shed from the oral cavity
1500 millimeters

41. What are the four main functions of deciduous teeth?
Excess dryness of the mouth
Mastication - aids in speech - influence facial structure - chewing surfaces
Where the ectoderm layer matures into the enamel
The connective tissue of the marginal gingiva

42. Labial Commissures
Creates the wall of the dentinal tubule
Arteries supplying blood to most of the head and the neck
Corners of the mouth
Excess bone in the middle of the palate

43. Retro Mandibular Vein
Drains the maxiallary artery and superficial temporal arteries
Acts as anchors between the alveolar bone and the tooth
Largest division of the trigeminal nerve
Third tooth from the midline

44. Vermilion Border
Platysma - trapezius - sternocleidomastoid
Portion of the lips where the skin meets the vermilion zone
Indented
Mandibular central incisors

45. Lingual Frenum
Causes a thickening of the cementum around the apex
Forms a large cavity above the roots of the maxillary molars
A line of tissue that extends from the tongue to the floor of the mouth
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

46. Median Sulcus
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
Shed from the oral cavity
The portion of the tooth that meets the gingiva
What divides the tongue in half and runs from the base to the tip of the tongue

47. Incisive Nerve branch
Two
Intervating the anterior teeth and the labial gingiva
Resists forces that try to pull the tooth outward
Outside surface Which is towards the cheek - on posterior teeth

48. Alveolar Mucosa
Incremental line indicating trauma of birth
Mastication - aids in speech - influence facial structure - chewing surfaces
Cheek bones--the most breakable bone in the body
Appears to be loosely attached - covering the alveolar bone.

49. Convects
Radiates from the developmental groove
Draws down the mandible and corners of the mouth
Trigeminal - facial - glossopharyngeal - hypoglossal
Curve outward

50. Facial Artery
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
Mandibular central incisors
Joined at the midline and are often referred to as the median Palatine suture
When cells rapidly increase in number

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Dental Assisting: Head And Neck Anatomy

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