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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. Cemental Spurs
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Tubules that pass through the entire surface of the dentin
Found near the cementoenamel junction
The portion of the tooth that meets the gingiva

2. When do oral and nasal cavity separate and palate develop?
(free gingiva) surrounds the teeth
Circle and tighten the gingival margin around the neck of the tooth
What divides the tongue in half and runs from the base to the tip of the tongue
Week 12

3. Triangular Ridge
Outside surface Which is towards the cheek - on posterior teeth
A line of tissue that extends from the tongue to the floor of the mouth
The ridges that run horizontally across the hard palate behind the incisive papilla
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

4. Fimbriated Folds
Folds of tissue to the the lingual veins
Incremental line indicating trauma of birth
4/5 cusps/ 3 roots
Acts as anchors between the alveolar bone and the tooth

5. What is the function of the buccle nerve branch?
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
The mandibular molars
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
When the surface of the teeth becomes grooved

6. Osteoclasts
Forms a large cavity above the roots of the maxillary molars
Drains the Pterygoid plexus of the veins
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Sharp projection on the under surface of the temporal bone

7. Labial Commissures
Layers of tooth tissue become calcified
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Found near the cementoenamel junction
The corners of the mouth where the top and bottom lip meet

8. Sulingual Folds
Cheek bones--the most breakable bone in the body
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Dentin found between the tubules
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue

9. Muscle Insertion
The moveable attachment of the muscle
Portion of the root seen in the oral cavity
Teeth will not erupt in proper position
Pulverizing or chewing surface

10. Zygomatic nerve
The moveable attachment of the muscle
The corners of the mouth where the top and bottom lip meet
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
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

11. Odontoblast
Cells that form dentin
Extreme variations from the norm
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Indented

12. Gingival Sulcus
Drains the maxiallary artery and superficial temporal arteries
Teeth after cuspids
When cells rapidly increase in number
The space between the unattached gingiva and the tooth

13. Gingiva
To bulge of curve outward
The teeth located at the back of the mouth
Genioglossus - hyoglossus - styloglossus - palatoglossus
A dense tissue covered with mucous membrane that can withstand chewing

14. Purpose of premolars
Used to pulverize food
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
1500 millimeters
Forms the bulk of the tooth

15. Rod Core
6 years old
Extreme variations from the norm
Inner portion of the enamel rod
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

16. Stenson's Duct
Opening for the ear
Duct located on the parotid papilla
Small bony projections surrounding the lingual foramen
Outside surface Which is towards the cheek - on posterior teeth

17. Endoderm
Respiratory system - digestive system and glandular organs
Excess bone in the middle of the palate
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
The cornerstone of the mouth

18. Torus Mandibularis
Excess bone formations under the tongue on the alvellar bone
Cut - tear - and grind food
Small head - low nasal bridge - thin upper lip - small mandible
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

19. Papilla
Quarters of the teeth
Small head - low nasal bridge - thin upper lip - small mandible
Small raised projections where taste buds are located
Trigeminal - facial - glossopharyngeal - hypoglossal

20. Pulp Stones
Forms the remaining 2/3 of the hard and soft palate uvula
Calcified masses of dentin
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Bone that surrounds the root of the tooth

21. Dental Lamina
Follows the inside of the ramus and the body of the mandible
Supportive fibers that anchor the tooth to the bone
Triangular space in the gingival direction when two adjacent teeth are in contact
Growth from the oral epithelium that gives rise to the tooth buds

22. Stippled
Healthy gingival tissue with an orange texture
The ridges that run horizontally across the hard palate behind the incisive papilla
Largest of the branches of the external carotid artery; supplies facial structure
Substances between cells

23. Duct
Forms the remaining 2/3 of the hard and soft palate uvula
Drains the floor of the mouth
9 weeks thru birth
Canal or passage for fluid

24. Anatomical root
Portion covered with cementum
Study of the structure and form of the teeth
Small yellowish glands on the labial mucosa
Aid in attaching the gingiva to the alveolar bone

25. Glenoid Fossa
Oval depression of temporal bone in condyloid process
1500 millimeters
Drains the maxiallary artery and superficial temporal arteries
4 cusps/ bifurcated

26. Contour Lines of Owen
Demonstrates a disturbance in the body metabolism
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
The fixed attachment of a muscle
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

27. Odontal Fiber Groups
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Acts as anchors between the alveolar bone and the tooth
Allow flexibility during mastication - speech
Two

28. Pterygoid Artery
A junction or center of veins that directly or indirectly drain a vast area
Retracts or depresses the tongue
Bone that surrounds the root of the tooth
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

29. Ridge
Resulting from an imperfect union where the lobes come together
Linear elevation of the tooth
Where the ramus meets the body of the mandible on the outside border
Small raised projections where taste buds are located

30. Sphenoid
Palatoglossus - palatopharyngeal
Origin of the tooth
Three bulges on the incisal edge
A bat shaped bone which forms the anterior portion of the skull

31. Saliva
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Tissue covering the alveolar processes
Study of the structure and form of the teeth

32. What is saliva made of?
The deepest point of the vestibule
H20 - mucin - organic salts and digestive enzymes
Digstric - Mylohyoid - stylohyoid - geniohyoid
Three bulges on the incisal edge

33. Inferior Nasal Conchae
Scroll like bones outside the nasal cavaties
Follows the length of the body of the mandible past the last tooth and up to the ramus
Separates the developing oral cavities from the nasal cavities
Surface away from the midline

34. Mandibular Artery
The inner surface of the lips
The corners of the mouth where the top and bottom lip meet
Located behind the ramus of the mandible and branches into five arteries
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone

35. Maxilla
Largest facial bone with two sections joined at the median suture
Inside surface Which is towards the tongue - on anterior teeth
Cheek bones--the most breakable bone in the body
Excess bone in the middle of the palate

36. Parotid Papilla
Surface towards the midline
A flap of tissue on the on the buccal mucosa
No bicuspids/ no 3rd molars
The line of demarcation between the attached gingiva and the marginal gingiva

37. Cleft Palate
Resulting from an imperfect union where the lobes come together
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Mildest form of cleft palate

38. Dentogingival Fiber Groups
Act to maintain the gingival integrity of the marginal gingiva
Draws down the mandible and corners of the mouth
Origin of the tooth
Molars

39. Nasmyths Membrane
Covering over the enamel that is left over from the epithelium ameloblasts
A horseshoe shaped groove that follow the curve of the dental arch
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
2 small raised folds of tissue where the lingual frenum attaches

40. Proliferation
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Smaller branch that ennervates the soft palate uvula and tonsils
Raised vertical folds of tissue on the lateral border of the tongue
Where the ectoderm layer matures into the enamel

41. How is the TMJ supported and what controls their movement?
Ligaments and muscles of mastication
Drains the facial structures beginning near the eye and descending toward the mandible
Maxillary first molar
(free gingiva) surrounds the teeth

42. Gingiva
Composed of mucosa and surrounds the necks of the teeth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
4/5 cusps/ 3 roots
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

43. What are the two ways the TMJs move?
A line of demarcation between the attached gingiva and alveolar mucosa
Depresses the tongue
Hinge motion and gliding movement
Initiation of the tooth begins

44. Fibroblasts
Forms after the completion of the apical foramen
Mastication - aids in speech - influence facial structure - chewing surfaces
Cells From which connective tissue evolve
The study of the microscopic structure and functions of tissues

45. What are the 4 muscles of the floor of the mouth?
Cells develop into different tissues
Digstric - Mylohyoid - stylohyoid - geniohyoid
4 cusps/ bifurcated
Rounded depression on a tooth

46. What is the maxillary cuspid known as?
The cornerstone of the mouth
Largest facial bone with two sections joined at the median suture
Growth from the oral epithelium that gives rise to the tooth buds
Wearing away of the incisal or occlusal surfaces of the tooth

47. Buckle groove
A horseshoe shaped groove that follow the curve of the dental arch
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

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

49. Ligament
Band of fibrous tissue which attaches bone to bone
Indented
Week 11
Follows the length of the body of the mandible past the last tooth and up to the ramus

50. lst and second premolars
Permeante teeth replace the primary teeth
A line of demarcation between the attached gingiva and alveolar mucosa
Supplies blood to the brain and the eyes
Teeth after cuspids