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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. Facial Vein
Trigeminal nerve--because it ennervates the maxilla and the mandible
A small projection in the middle of the upper lip
Oval depression of temporal bone in condyloid process
Drains the facial structures beginning near the eye and descending toward the mandible

2. Bud stage
Triangular space in the gingival direction when two adjacent teeth are in contact
Initiation of the tooth begins
Appears to be loosely attached - covering the alveolar bone.
Synovial fluid

3. What are the four major muscles of facial expression
Disk that acts like a cushion between the temporal bone and the condyloid process
Orbicularis oris - buccinator - mentalis - zygomatic major
Functions the same as the alveolar cfg; originate in alveolar bone
Portion covered with cementum

4. Dentinal Tubules
The moveable attachment of the muscle
Tubules that pass through the entire surface of the dentin
Found only in multi-rooted teeth and resists rotational forces
A flap of tissue on the on the buccal mucosa

5. Pulp horns
Study of prenatal growth and the developing process of an individual
Occlusal surface of the posterior tooth
Pointed elongations of the pulp
A horseshoe shaped groove that follow the curve of the dental arch

6. External Auditory Meatus
Cells that form dentin
A dense tissue covered with mucous membrane that can withstand chewing
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Opening for the ear

7. Morphology
The fixed attachment of a muscle
Function to resist rotational forces and tilting
A shallow v-shaped depression located below the bottom of the nose and above the lips
Study of the structure and form of the teeth

8. Lingual Foramen
Dividing point of a multi-rooted tooth
A bony projection that separates each socket
Initiation of the tooth begins
The internal surface at the center of the mandible

9. Cusp of Caribelli
The slightly raised line extending down the middle of the hard palate
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Functions the same as the alveolar cfg; originate in alveolar bone
Extends from the medial corner of the eye to the nasal cavity

10. Pterygoid plexus of the veins
A junction or center of veins that directly or indirectly drain a vast area
Ligaments and muscles of mastication
Bone that surrounds the root of the tooth
Opening in the mouth below the orbit on the maxillary bone

11. Soft Palate
Small head - low nasal bridge - thin upper lip - small mandible
Covers muscle tissue in the posterior portion of the palate
Arteries supplying blood to most of the head and the neck
Fleshy elevation under the tongue

12. What are the 3 branches of the pterygopalatine nerve branch?
Molars
Greater - lesser - naso palatine nerves
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
Extends from the medial corner of the eye to the nasal cavity

13. Dentinal Hypersensitivity
2 small raised folds of tissue where the lingual frenum attaches
Lift the hyoid bone and assist in opening the mouth
The ridges that run horizontally across the hard palate behind the incisive papilla
When the dentin is exposed

14. Endoderm
To dissolve
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Growth from the oral epithelium that gives rise to the tooth buds
Respiratory system - digestive system and glandular organs

15. Odontogenesis
Origin of the tooth
The corners of the mouth where the top and bottom lip meet
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Chewing and swallowing food

16. Nasolacrimal groove
Disk that acts like a cushion between the temporal bone and the condyloid process
When the dentin is exposed
Extends from the medial corner of the eye to the nasal cavity
Three cusps/ trifurcated

17. Common Carotid
Arteries supplying blood to most of the head and the neck
Chewing and swallowing food
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

18. Palatine Bones
Platysma - trapezius - sternocleidomastoid
Drains the floor of the mouth
Functions the same as the alveolar cfg; originate in alveolar bone
Joined at the midline and are often referred to as the median Palatine suture

19. Hyoid Bone
Trigeminal - facial - glossopharyngeal - hypoglossal
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
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Shaping the tongue during speech - mastication and swallowing

20. How much saliva is produced daily?
The tip of the chin
1500 millimeters
Functions the same as the alveolar cfg; originate in alveolar bone
Causes a thickening of the cementum around the apex

21. Labial
Elevates the posterior portion of the tongue and narrows the fauces
Primary and permanent
Outside surface Which is towards the lips
Pointed or rounded mounds on the crown of the tooth

22. Labial Mucosa
Primitive mouth
Calcified masses of dentin
Triferacated
The inner surface of the lips

23. What is the most common problem with TMJ
Fleshy elevation under the tongue
Maxillary first molar
What divides the tongue in half and runs from the base to the tip of the tongue
The disc becomes displaced

24. Agenesis
Drains the maxiallary artery and superficial temporal arteries
Quarters of the teeth
Raised vertical folds of tissue on the lateral border of the tongue
Occurs in unusual ways and distorted crowns may appear

25. Mylohyoid Artery
(free gingiva) surrounds the teeth
Located in a depressed area between the pillars
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Branches off the inferior alveolar artery before intering the mandibular canal

26. Enamel Dysplasia
Radiates from the developmental groove
When the surface of the teeth becomes grooved
The first predentin that is formed and matures within the tube
Of or pertaining to area surrounding naval cavity

27. Neonatal line
Incremental line indicating trauma of birth
Cells that form dentin
Narrow long enamel tuft
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

28. If a patient receives toxic agents - how long does it take for their sense of taste to return?
10 days
Two weeks thru 8th week
(free gingiva) surrounds the teeth
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

29. Vermilion Zone
A junction or center of veins that directly or indirectly drain a vast area
Supportive fibers that anchor the tooth to the bone
Constricts the nasopharyngeal passage and elevates the larynx
Portion of the lips that are red

30. Philtrum
The ridges that run horizontally across the hard palate behind the incisive papilla
Greater - lesser - naso palatine nerves
Vertical groove on the midline of the upper lip
Joined at the midline and are often referred to as the median Palatine suture

31. Purpose of premolars
Moves the head backward and laterally
Used to pulverize food
Joined at the midline and are often referred to as the median Palatine suture
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface

32. How can you tell if someone has cancer by looking at the tongue?
Looking at the border of the tongue
Separates the developing oral cavities from the nasal cavities
Bi-cuspids
Primary embryonic mesoderm layer that develops during the morpho differentiation period

33. Internal Jugular Vein
Sharp projection on the under surface of the temporal bone
Resists intrusive forces that try to push the tooth inwards
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Aid in attaching the gingiva to the alveolar bone

34. What is another name for premolars?
Healthy gingival tissue with an orange texture
Orbicularis oris - buccinator - mentalis - zygomatic major
Study of prenatal growth and the developing process of an individual
Bi-cuspids

35. Palantine Tonsils
Tissue covering the alveolar processes
A line that represents the alveolus bone lining the socket
Substances between cells
Located in a depressed area between the pillars

36. Mesenchyme Tissue
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Where the proximal sides of two teeth come together and touch
Study of the structure and form of the teeth

37. Ectoderm
Synovial fluid
Forms into the inner lining of the oral cavitiy and enamel of the teeth
The fixed attachment of a muscle
Opening in the mouth below the orbit on the maxillary bone

38. Function of Palatopharyngeal
Constricts the nasopharyngeal passage and elevates the larynx
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Mastication - aids in speech - influence facial structure - chewing surfaces
Lift the hyoid bone and assist in opening the mouth

39. Rami
The outer edge of the nostril
Act to maintain the gingival integrity of the marginal gingiva
Shaping the tongue during speech - mastication and swallowing
Two vertical extensions of the mandible

40. Occlusal
What divides the tongue in half and runs from the base to the tip of the tongue
Pulverizing or chewing surface
Enamel is thinner - pulp chamber is smaller -
Function to resist rotational forces and tilting

41. Pulp Stones
Primitive mouth
Act to maintain the gingival integrity of the marginal gingiva
Calcified masses of dentin
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

42. Glenoid Fossa
Formed by the uniting of lobes during development of crown
Pulverizing or chewing surface
Teeth will not erupt in proper position
Oval depression of temporal bone in condyloid process

43. Cemental Spurs
Found near the cementoenamel junction
The development of different forms
Shaping the tongue during speech - mastication and swallowing
Assist in depressing the mandible and elevating the tongue

44. Mental Protuberance
Sharp projection on the under surface of the temporal bone
The slightly raised line extending down the middle of the hard palate
Growth from the oral epithelium that gives rise to the tooth buds
The tip of the chin

45. Landmarks
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Pointed or rounded mounds on the crown of the tooth
Middle two teeth in the mouth
Occlusal surface of the posterior tooth

46. What is the largest cranial nerve and the most important to dental auxillaries and why?
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
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Elevates the posterior portion of the tongue and narrows the fauces
Trigeminal nerve--because it ennervates the maxilla and the mandible

47. Muscle Insertion
The deepest point of the vestibule
Elevates the posterior portion of the tongue and narrows the fauces
The moveable attachment of the muscle
Mucosa that covers the alveolar bone

48. Nasmyths Membrane
Third tooth from the midline
Covering over the enamel that is left over from the epithelium ameloblasts
Middle line of the teeth
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

49. Lesser Palatine Foramen
Of or pertaining to area surrounding naval cavity
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Maxillary third molar
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

50. Sphenoid
Portion of the lips where the skin meets the vermilion zone
A bat shaped bone which forms the anterior portion of the skull
Bone that surrounds the root of the tooth
Opening in the mouth below the orbit on the maxillary bone