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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. Occlusion third
Resists forces that try to pull the tooth outward
Surface away from the midline
Small yellowish glands on the labial mucosa
Occlusal surface of the posterior tooth

2. Facial Artery
Excess bone formations under the tongue on the alvellar bone
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
Forms a large cavity above the roots of the maxillary molars
Wearing away of the incisal or occlusal surfaces of the tooth

3. Philtrum
A shallow v-shaped depression located below the bottom of the nose and above the lips
Bluish veins that run the length of the tongue
Narrow long enamel tuft
Hinge motion and gliding movement

4. Pulp Stones
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Forms the remaining 2/3 of the hard and soft palate uvula
The area on the crown of the tooth that is nearest the gingival
Calcified masses of dentin

5. Lesser Palatine Foramen
Forms the remaining 2/3 of the hard and soft palate uvula
Third tooth from the midline
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Synovial fluid

6. Labial
Outside surface Which is towards the lips
Curve outward
Retracts or depresses the tongue
Orbicularis oris - buccinator - mentalis - zygomatic major

7. Lines of Retzius
Incremental lines around the layers of the enamel matrix
Bifurcated/ 5 cusps
Depresses the tongue
Small yellowish glands on the labial mucosa

8. Retromolar Area
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Disk that acts like a cushion between the temporal bone and the condyloid process
Mildest form of cleft palate
A triangular area located behind the last molar

9. What are the 4 extrinsic muscles of the tongue
Genioglossus - hyoglossus - styloglossus - palatoglossus
Platysma - trapezius - sternocleidomastoid
Quarters of the teeth
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

10. Alveolar Crest
Small grooves noted on some teeth
Small head - low nasal bridge - thin upper lip - small mandible
Two cortical bone plates that come together between each tooth
A bat shaped bone which forms the anterior portion of the skull

11. What is the purpose of saliva?
6 years old
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Small head - low nasal bridge - thin upper lip - small mandible
To lubricate the oral cavity and to moisten food

12. Maxillary Arch
Third tooth from the midline
Found only in multi-rooted teeth and resists rotational forces
Upper arch of the teeth
6 years old

13. Morpho Differentiation
1500 millimeters
Enamel is thinner - pulp chamber is smaller -
Branches off the inferior alveolar artery before intering the mandibular canal
Forming organ takes shape and resembles the shape of a bell

14. Mylohyoid Nerve Branch
Cells that form dentin
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
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

15. Fissure
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Resists intrusive forces that try to push the tooth inwards
Resulting from an imperfect union where the lobes come together
Inside of the maxillary teeth

16. Develop Mental Groove
Triferacated
Formed by the uniting of lobes during development of crown
Retracts the tongue and raises the tip of the tongue
The mandibular first premolar

17. lst and second premolars
Dividing point of a multi-rooted tooth
Teeth after cuspids
Cells develop into different tissues
Causes a thickening of the cementum around the apex

18. Common Carotid
Drains the Pterygoid plexus of the veins
Arteries supplying blood to most of the head and the neck
A bony plate covered with keratinized tissue located in the anterior portion of the palate
The cornerstone of the mouth

19. Function of Stylohyoid
The deepest point of the vestibule
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Causes a thickening of the cementum around the apex

20. Parotid Papilla
A small projection in the middle of the upper lip
A flap of tissue on the on the buccal mucosa
Cut - tear - and grind food
Small yellowish glands on the labial mucosa

21. Intercellular Substances
Intervating the anterior teeth and the labial gingiva
Assist in depressing the mandible and elevating the tongue
The cornerstone of the mouth
Substances between cells

22. How many teeth are in the permanent set of teeth?
Week 11
Bicuspids
32
Oval depression of temporal bone in condyloid process

23. Enamel Tufts
Located on the inside of the body of the ramus
Extends from the medial corner of the eye to the nasal cavity
Separation of the upper lip ( 1 of 1000 live births)
Small dark brushes

24. Maxillary Tuberosity
When the dentin is exposed
A bony plate covered with keratinized tissue located in the anterior portion of the palate
A rounded area beyond the last posterior maxillary tooth
Assist in the movement and functioning of the tongue

25. Embrasure
Small curved lines that run parellel to the CEJ
Small grooves noted on some teeth
Assist in the movement and functioning of the tongue
Triangular space in the gingival direction when two adjacent teeth are in contact

26. Triangular Ridge
A small projection in the middle of the upper lip
Developmental segment of a tooth
Arteries supplying blood to most of the head and the neck
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

27. When does the maxillary first molar erupt?
6 years old
Greater - lesser - naso palatine nerves
The development of different cells
Two weeks thru 8th week

28. Vestibule
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
A pocket formed by the soft tissue of cheeks and gingiva
Layers of tooth tissue become calcified
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

29. Eruption
Orbicularis oris - buccinator - mentalis - zygomatic major
Draws down the mandible and corners of the mouth
Tooth emerges from gum tissue and becomes visible
Bifurcated/ 5 cusps

30. What is another name for premolars?
Calcified masses of dentin
Week 12
Formed by the uniting of lobes during development of crown
Bi-cuspids

31. What are the 4 taste senses and where are they located?
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Forms a large cavity above the roots of the maxillary molars
Substances between cells
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

32. Hypercementosis
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Pointed elongations of the pulp
Causes a thickening of the cementum around the apex
Layers of tooth tissue become calcified

33. Internal Oblique Ridge
Portion of the lips that are red
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Where the proximal sides of two teeth come together and touch
Follows the inside of the ramus and the body of the mandible

34. What are the 4 cranial nerves that ennervate the face and oral cavity
Trigeminal - facial - glossopharyngeal - hypoglossal
Covering over the enamel that is left over from the epithelium ameloblasts
Disk that acts like a cushion between the temporal bone and the condyloid process
A bony plate covered with keratinized tissue located in the anterior portion of the palate

35. Fossa
Tubules that pass through the entire surface of the dentin
Rounded depression on a tooth
Surface towards the midline
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle

36. Groove
Indented
Intervating the anterior teeth and the labial gingiva
9 weeks thru birth
Small linear depression

37. Articular Disc
Found only in multi-rooted teeth and resists rotational forces
Bone that surrounds the root of the tooth
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
A projection that extends off the back of the soft palate

38. Tendon
Band of fibrous tissue which attaches muscle to bone
A line of tissue that extends from the tongue to the floor of the mouth
Dentin found between the tubules
1500 millimeters

39. Dentoperiosteal Fiber Groups
6 months/3years
Supportive fibers that anchor the tooth to the bone
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Tissue fluid surrounding the cell membrane of the odontoblast

40. Stomedeum
Primitive mouth
Follows the inside of the ramus and the body of the mandible
Used to pulverize food
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

41. Maxilla
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Largest facial bone with two sections joined at the median suture
Peg shaped crown with a smooth surface

42. Mandibular Artery
Covers muscle tissue in the posterior portion of the palate
A line that represents the alveolus bone lining the socket
Located behind the ramus of the mandible and branches into five arteries
The area on the crown of the tooth that is nearest the gingival

43. Dentogingival Fiber Groups
The development of different forms
Looking at the border of the tongue
Upper arch of the teeth
Act to maintain the gingival integrity of the marginal gingiva

44. What are the 3 branches of the pterygopalatine nerve branch?
Greater - lesser - naso palatine nerves
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Bifurcated/ 5 cusps
4 cusps/ bifurcated

45. Torus
Narrow long enamel tuft
Allow flexibility during mastication - speech
Excess bone in the middle of the palate
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

46. Lesser Palatine Nerve
Arteries supplying blood to most of the head and the neck
Used to pulverize food
Smaller branch that ennervates the soft palate uvula and tonsils
Primary and permanent

47. External Auditory Meatus
Molars
Opening for the ear
Portion of the lips where the skin meets the vermilion zone
A condition where the lower frenum attachment is very short/DDS/frenectomy

48. Mucogingival Junction
Smaller branch that ennervates the soft palate uvula and tonsils
A line of demarcation between the attached gingiva and alveolar mucosa
Cells that form dentin
Where the ectoderm layer matures into the enamel

49. Gingival Sulcus
Middle two teeth in the mouth
Of or pertaining to area surrounding naval cavity
The space between the unattached gingiva and the tooth
Raised vertical folds of tissue on the lateral border of the tongue

50. Intertubular Dentin
Scroll like bones outside the nasal cavaties
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Dentin found between the tubules
A shallow v-shaped depression located below the bottom of the nose and above the lips