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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. Peg lateral
Peg shaped crown with a smooth surface
Assists in elevating the chin
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Function to resist rotational forces and tilting

2. Cleft Palate
Curve outward
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Opening in the mouth below the orbit on the maxillary bone
Outside surface Which is towards the lips

3. Frenum
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Permeante teeth replace the primary teeth
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Hinge motion and gliding movement

4. Cementoblast
Moves the head backward and laterally
Elevated are of enamel that forms the Mesial and distal borders
The inner surface of the lips
Cells that form cementum

5. What is origin and What is insertion?
Act to maintain the gingival integrity of the marginal gingiva
Origin - fixed point - insertion - movable point
Narrow long enamel tuft
Forms into the inner lining of the oral cavitiy and enamel of the teeth

6. Mylohyoid Artery
The teeth located at the back of the mouth
A rounded area beyond the last posterior maxillary tooth
Mastication - aids in speech - influence facial structure - chewing surfaces
Branches off the inferior alveolar artery before intering the mandibular canal

7. Interdental Gingiva
Portion of the root seen in the oral cavity
The moveable attachment of the muscle
An extension of an unattached gingiva and the tooth
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

8. Median Sulcus
A dense tissue covered with mucous membrane that can withstand chewing
What divides the tongue in half and runs from the base to the tip of the tongue
Mandibular central incisors
Incremental line indicating trauma of birth

9. What kind of root does the maxillary first molar have?
Primary and permanent
Triferacated
Calcified masses of dentin
Supplies blood to the brain and the eyes

10. Posterior Tonsillar Pillar
Place where the groove comes together or fissures cross
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Set of arches found farther in the back of the throat
A junction or center of veins that directly or indirectly drain a vast area

11. Retromolar Area
The first predentin that is formed and matures within the tube
A triangular area located behind the last molar
4 cusps/ bifurcated
Supplies blood to the face and oral cavity

12. Interradicular Septum
Cells that form dentin
The bone that separates the root on a tooth
Lift the hyoid bone and assist in opening the mouth
Opening in the mouth below the orbit on the maxillary bone

13. Sulingual Folds
2 to 3 pints
Cells From which connective tissue evolve
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Lift the hyoid bone and assist in opening the mouth

14. What are the four major muscles of facial expression
A horseshoe shaped groove that follow the curve of the dental arch
Orbicularis oris - buccinator - mentalis - zygomatic major
Interdental ligament
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

15. Interdental Ligament Group
Healthy gingival tissue with an orange texture
Excess bone formations under the tongue on the alvellar bone
Resist rotational forces and hold teeth in inter-proximal contact
Circle and tighten the gingival margin around the neck of the tooth

16. Taste Buds
Portion of the lips that are red
What divides the tongue in half and runs from the base to the tip of the tongue
Resists intrusive forces that try to push the tooth inwards
Oval structures that are located on the dorsal surface of the tongue

17. Dentoperiosteal Fiber Groups
Indented
Supportive fibers that anchor the tooth to the bone
Teeth after cuspids
Formed by the fibroblast cells and secures the tooth in the socket

18. Linea Alba
Joined at the midline and are often referred to as the median Palatine suture
Largest division of the trigeminal nerve
Tissue fluid surrounding the cell membrane of the odontoblast
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

19. Secondary palate
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Chewing and swallowing food
Forms the remaining 2/3 of the hard and soft palate uvula
No bicuspids/ no 3rd molars

20. Pulp Stones
Calcified masses of dentin
Drains the floor of the mouth
Small curved lines that run parellel to the CEJ
Excess bone in the middle of the palate

21. Gingival Hyperplasia
Quarters of the teeth
An overgrowth of the gingival tissue
The crown of the tooth that is nearest the incisal edge near the anterior tooth
A raised area of tissue laying behind the maxillary central incisors on the hard palate

22. Maxillary Tuberosity
Band of fibrous tissue which attaches bone to bone
Drains the maxiallary artery and superficial temporal arteries
A rounded area beyond the last posterior maxillary tooth
Hinge motion and gliding movement

23. Ameloblast
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Interdental ligament
Enamel forming cells

24. Which molar is the wisdom tooth
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Maxillary third molar
Outside surface Which is towards the cheek - on posterior teeth
A bony projection that separates each socket

25. When do the tooth buds appear?
Small raised projections where taste buds are located
Circle and tighten the gingival margin around the neck of the tooth
Week 11
Aid in attaching the gingiva to the alveolar bone

26. Ridge
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
The bone that separates the root on a tooth
Linear elevation of the tooth
Primary embryonic mesoderm layer that develops during the morpho differentiation period

27. Saliva
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Lower arch of the teeth
Set of arches found farther in the back of the throat

28. Mental Nerve Branch
A triangular area located behind the last molar
Largest division of the trigeminal nerve
Two
Small dark brushes

29. Function of Geniohyoid
Shaping the tongue during speech - mastication and swallowing
Pulls the hyoid bone and the tongue anteriorly
Supplies blood to the face and oral cavity
Synovial fluid

30. Alveolar Crest
Oval depression of temporal bone in condyloid process
Located in a depressed area between the pillars
Dentin found between the tubules
Two cortical bone plates that come together between each tooth

31. Incisive Papilla
A flap of tissue on the on the buccal mucosa
The internal surface at the center of the mandible
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Excess bone formations under the tongue on the alvellar bone

32. 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
Primary and permanent
Maxillary first molar
Mucosa that covers the alveolar bone

33. Muscle origine
The fixed attachment of a muscle
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Found only in multi-rooted teeth and resists rotational forces
Oval structures that are located on the dorsal surface of the tongue

34. Rami
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Two vertical extensions of the mandible
Portion of the lips that are red
Wearing away of the incisal or occlusal surfaces of the tooth

35. What is Ankyloglossia and who can treat it / What is the treatment called?
Moves the head backward and laterally
A condition where the lower frenum attachment is very short/DDS/frenectomy
Scroll like bones outside the nasal cavaties
Largest of the branches of the external carotid artery; supplies facial structure

36. Morpho differentiation
What divides the tongue in half and runs from the base to the tip of the tongue
The development of different forms
Resist rotational forces and hold teeth in inter-proximal contact
A bony projection that separates each socket

37. Function of Palatopharyngeal
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Narrow long enamel tuft
A line that represents the alveolus bone lining the socket
Constricts the nasopharyngeal passage and elevates the larynx

38. Pulpitis
Inside surface Which is towards the tongue - on anterior teeth
When the tissue becomes inflamed
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
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

39. Xygote
Formed by the fibroblast cells and secures the tooth in the socket
Where the ectoderm layer matures into the enamel
Located on the inside of the body of the ramus
Conception thru the first two weeks

40. Pterygoid Process
Wings of the sphenoid bone
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Disk that acts like a cushion between the temporal bone and the condyloid process
A junction or center of veins that directly or indirectly drain a vast area

41. When do the primary teeth begin erupting and are fully erupted?
6 years old
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
6 months/3years
Natural teeth in position

42. Gingiva
Trigeminal - facial - glossopharyngeal - hypoglossal
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Composed of mucosa and surrounds the necks of the teeth
A line of demarcation between the attached gingiva and alveolar mucosa

43. Mental Protuberance
Band of fibrous tissue which attaches bone to bone
Week 11
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
The tip of the chin

44. Cemental Spurs
Found near the cementoenamel junction
Digstric - Mylohyoid - stylohyoid - geniohyoid
Vertical groove on the midline of the upper lip
20

45. Vermilion Border
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Shed from the oral cavity
Demonstrates a disturbance in the body metabolism
Portion of the lips where the skin meets the vermilion zone

46. What is saliva made of?
Set of arches found farther in the back of the throat
H20 - mucin - organic salts and digestive enzymes
Indented
No bicuspids/ no 3rd molars

47. Distal
Developmental segment of a tooth
Two cortical bone plates that come together between each tooth
Surface away from the midline
Canal or passage for fluid

48. Nasmyths Membrane
Covering over the enamel that is left over from the epithelium ameloblasts
Origin - fixed point - insertion - movable point
Conception thru the first two weeks
A horseshoe shaped groove that follow the curve of the dental arch

49. Incisive Arteries
Opening for the ear
Supplies blood to the roots and periodontal ligaments of the interior teeth
Maxillary third molar
The line of demarcation between the attached gingiva and the marginal gingiva

50. Vermilion Zone
Portion of the lips that are red
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Developmental segment of a tooth
A bony plate covered with keratinized tissue located in the anterior portion of the palate