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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. Convects
The teeth located at the back of the mouth
Small head - low nasal bridge - thin upper lip - small mandible
Curve outward
Enamel is thinner - pulp chamber is smaller -

2. Nasmyths Membrane
Covering over the enamel that is left over from the epithelium ameloblasts
Cells that form cementum
Mucosa that covers the alveolar bone
Constricts the nasopharyngeal passage and elevates the larynx

3. Gingival Sulcus
Bicuspids
The space between the unattached gingiva and the tooth
Triferacated
Depresses the tongue

4. Pterygoid Process
The area on the crown of the tooth that is nearest the gingival
Wings of the sphenoid bone
Bluish veins that run the length of the tongue
Rounded depression on a tooth

5. What are the two ways the TMJs move?
Ligaments and muscles of mastication
Disk that acts like a cushion between the temporal bone and the condyloid process
Hinge motion and gliding movement
Two weeks thru 8th week

6. Fungiform Papillae
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
A rounded area beyond the last posterior maxillary tooth
Wings of the sphenoid bone
Papillae that give the tongue the strawberry effect

7. What is another name for premolars?
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Bi-cuspids
Place where the groove comes together or fissures cross
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

8. What are the 4 extrinsic muscles of the tongue
Covers muscle tissue in the posterior portion of the palate
Genioglossus - hyoglossus - styloglossus - palatoglossus
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

9. Lesser Palatine Nerve
The cornerstone of the mouth
Genioglossus - hyoglossus - styloglossus - palatoglossus
Act to maintain the gingival integrity of the marginal gingiva
Smaller branch that ennervates the soft palate uvula and tonsils

10. When does the maxillary first molar erupt?
A horseshoe shaped groove that follow the curve of the dental arch
Wearing away of the incisal or occlusal surfaces of the tooth
6 years old
Three cusps/ trifurcated

11. Facial Artery
(free gingiva) surrounds the teeth
Forms the remaining 2/3 of the hard and soft palate uvula
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
Wings of the sphenoid bone

12. What are the 4 pairs of muscles of mastication!
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Supplies blood to the brain and the eyes
Clear fluid secreted by the salivary and mucous glands throughout the mouth
No bicuspids/ no 3rd molars

13. Bud stage
To dissolve
Initiation of the tooth begins
The deepest point of the vestibule
Cells that form dentin

14. Maxillary Artery
Secrete saliva to assist in process of digestion
Bone that surrounds the root of the tooth
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Largest of the branches of the external carotid artery; supplies facial structure

15. Genial Tubercles
Small bony projections surrounding the lingual foramen
The mandibular molars
Wings of the sphenoid bone
Outside surface Which is towards the lips

16. What is saliva made of?
Greater - lesser - naso palatine nerves
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
What divides the tongue in half and runs from the base to the tip of the tongue
H20 - mucin - organic salts and digestive enzymes

17. Median Sulcus
What divides the tongue in half and runs from the base to the tip of the tongue
Buccal - lingual - and inferior alveolar
Small dark brushes
The ridges that run horizontally across the hard palate behind the incisive papilla

18. Sharpey's Fibers
Function to resist rotational forces and tilting
Acts as anchors between the alveolar bone and the tooth
Rounded depression on a tooth
1500 millimeters

19. What are the 4 maxillary nerve branches?
Allow flexibility during mastication - speech
Interdental ligament
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Quarters of the teeth

20. Function of Stylohyoid
Draws the hyoid bone superiorly and posteriorly and stabilizes it
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
A condition where the lower frenum attachment is very short/DDS/frenectomy
Appears to be loosely attached - covering the alveolar bone.

21. Internal Oblique Ridge
Largest of the branches of the external carotid artery; supplies facial structure
Follows the inside of the ramus and the body of the mandible
Origin - fixed point - insertion - movable point
Dentin found between the tubules

22. What are the characteristics of permanent teeth?
Appears to be loosely attached - covering the alveolar bone.
Small curved lines that run parellel to the CEJ
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Enamel is thinner - pulp chamber is smaller -

23. Alveologingival Fiber Groups
An enclosed area that matures into dentin - cementum and pulp
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Short tubules that seem to crossover to the enamel
Aid in attaching the gingiva to the alveolar bone

24. Ligament
Extreme variations from the norm
Band of fibrous tissue which attaches bone to bone
Small curved lines that run parellel to the CEJ
Chewing and swallowing food

25. What is origin and What is insertion?
Origin - fixed point - insertion - movable point
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
Bluish veins that run the length of the tongue
Vertical groove on the midline of the upper lip

26. Histology
Supplies blood to the roots and periodontal ligaments of the interior teeth
Cells that form dentin
Pulls the hyoid bone and the tongue anteriorly
The study of the microscopic structure and functions of tissues

27. External Auditory Meatus
When the tissue becomes inflamed
Largest division of the trigeminal nerve
Cluster of tissue that manufactures and secrets fluid
Opening for the ear

28. Maxillary Arch
Forms a large cavity above the roots of the maxillary molars
Upper arch of the teeth
Rounded depression on a tooth
12 years

29. Labial Commissures
Week 12
Set of arches found farther in the back of the throat
Resist rotational forces and hold teeth in inter-proximal contact
Corners of the mouth

30. Meniscus
Portion of the lips that are red
Disk that acts like a cushion between the temporal bone and the condyloid process
Two vertical extensions of the mandible
The connective tissue of the marginal gingiva

31. Epithelial Attachment
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Formed by the fibroblast cells and secures the tooth in the socket
Greater - lesser - naso palatine nerves
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

32. Mandibular Artery
Located behind the ramus of the mandible and branches into five arteries
Orbicularis oris - buccinator - mentalis - zygomatic major
Resists intrusive forces that try to push the tooth inwards
Three bulges on the incisal edge

33. Styloid Process
Cells that form dentin
Sharp projection on the under surface of the temporal bone
Scroll like bones outside the nasal cavaties
Biting edge of the teeth

34. Odontoblast
Inside surface Which is towards the tongue - on anterior teeth
The development of different tissues
Looking at the border of the tongue
Cells that form dentin

35. Philtrum
Lower arch of the teeth
Intervating the anterior teeth and the labial gingiva
Vertical groove on the midline of the upper lip
Full deep rich sound in nasal cavity

36. Filiform Papillae
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Two
Opening in the mouth below the orbit on the maxillary bone
Secrete saliva to assist in process of digestion

37. What are the 2 sets of teeth?
Oval depression of temporal bone in condyloid process
Bifurcated/ 5 cusps
Scroll like bones outside the nasal cavaties
Primary and permanent

38. Papilla
Healthy gingival tissue with an orange texture
Trigeminal - facial - glossopharyngeal - hypoglossal
Small raised projections where taste buds are located
Follows the length of the body of the mandible past the last tooth and up to the ramus

39. Eruption
Cheek bones--the most breakable bone in the body
Chewing and swallowing food
Tooth emerges from gum tissue and becomes visible
Portion of the root seen in the oral cavity

40. Articular Disc
Second teeth next to central incisors
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Forms a large cavity above the roots of the maxillary molars
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

41. Exfoliated
Triferacated
Shed from the oral cavity
Interdental ligament
Assists in elevating the chin

42. Stensens' Duct (aka Parotid)

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43. Function of Palatopharyngeal
Greater - lesser - naso palatine nerves
When the surface of the teeth becomes grooved
Constricts the nasopharyngeal passage and elevates the larynx
Origin of the tooth

44. Stippled
Largest of the branches of the external carotid artery; supplies facial structure
Teeth will not erupt in proper position
Largest facial bone with two sections joined at the median suture
Healthy gingival tissue with an orange texture

45. Pulpitis
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
When the tissue becomes inflamed
Natural teeth in position
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

46. Transverse Ridge
Follows the length of the body of the mandible past the last tooth and up to the ramus
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Peg shaped crown with a smooth surface

47. Maxillary Tuberosity
Outside surface Which is towards the cheek - on posterior teeth
Cells develop into different tissues
Dentin found between the tubules
A rounded area beyond the last posterior maxillary tooth

48. Convex
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Resists intrusive forces that try to push the tooth inwards
Allow flexibility during mastication - speech
To bulge of curve outward

49. Buckle groove
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
An enclosed area that matures into dentin - cementum and pulp
Curve outward
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

50. Glenoid Fossa
Oval depression of temporal bone in condyloid process
Divides the crown and the root
The outer edge of the nostril
The area on the crown of the tooth that is nearest the gingival