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Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
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. Posterior Tonsillar Pillar
9 months (5 months ultrasound to tell sex)
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Mastication - aids in speech - influence facial structure - chewing surfaces
Set of arches found farther in the back of the throat

2. Occlusal
Inside surface Which is towards the tongue - on anterior teeth
Pulverizing or chewing surface
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Lining covers inside of the oral cavity

3. What are the 4 taste senses and where are they located?
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Maxillary third molar

4. Fossa
The outer edge of the nostril
Dividing point of a multi-rooted tooth
Shed from the oral cavity
Rounded depression on a tooth

5. Histology
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Where the ectoderm layer matures into the enamel
The study of the microscopic structure and functions of tissues
An extension of an unattached gingiva and the tooth

6. Which molar contains the cusp of Caribelli?
Maxillary first molar
Triangular space in the gingival direction when two adjacent teeth are in contact
Drains the floor of the mouth
A bony plate covered with keratinized tissue located in the anterior portion of the palate

7. Linea Alba
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Initiation of the tooth begins
Study of the structure and form of the teeth

8. How is the TMJ supported and what controls their movement?
The teeth located at the back of the mouth
Ligaments and muscles of mastication
Palatoglossus - palatopharyngeal
Formed by the uniting of lobes during development of crown

9. What are the 2 sets of teeth?
Cheek bones--the most breakable bone in the body
Small dark brushes
Primary and permanent
Acts as anchors between the alveolar bone and the tooth

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

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11. Denticion
Natural teeth in position
Excess bone in the middle of the palate
Calcium salts are deposited into formed tooth
To lubricate the oral cavity and to moisten food

12. Dental Lamina
The development of different cells
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Growth from the oral epithelium that gives rise to the tooth buds
Located in a depressed area between the pillars

13. Mucogingival Junction
A bony plate covered with keratinized tissue located in the anterior portion of the palate
A line of demarcation between the attached gingiva and alveolar mucosa
Lower arch of the teeth
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

14. Greater Palatine Nerve
Divides the crown and the root
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
9 weeks thru birth
Two weeks thru 8th week

15. Stenson's Duct
Fleshy elevation under the tongue
Cheek bones--the most breakable bone in the body
Duct located on the parotid papilla
The space between the unattached gingiva and the tooth

16. Dentinal Hypersensitivity
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Elevated are of enamel that forms the Mesial and distal borders
When the dentin is exposed
A bony projection that separates each socket

17. Pterygoid Process
Calcified masses of dentin
Assists in elevating the chin
Teeth after cuspids
Wings of the sphenoid bone

18. Vestibule Fornix
Sharp projection on the under surface of the temporal bone
The deepest point of the vestibule
Used to pulverize food
Small grooves noted on some teeth

19. Contact Area
The inner surface of the cheeks
Origin - fixed point - insertion - movable point
Branches off the inferior alveolar artery before intering the mandibular canal
Where the proximal sides of two teeth come together and touch

20. Circular Ligament Fiber Groups
Short tubules that seem to crossover to the enamel
Circle and tighten the gingival margin around the neck of the tooth
Act to maintain the gingival integrity of the marginal gingiva
Hinge motion and gliding movement

21. Meniscus
Disk that acts like a cushion between the temporal bone and the condyloid process
Small curved lines that run parellel to the CEJ
Cells develop into different tissues
Retracts the tongue and raises the tip of the tongue

22. Secondary Dentin
Used to pulverize food
Molaris meaning millstone
Forms after the completion of the apical foramen
Narrow long enamel tuft

23. Fissure
Smaller branch that ennervates the soft palate uvula and tonsils
Bi-cuspids
Fleshy elevation under the tongue
Resulting from an imperfect union where the lobes come together

24. Odontogenesis
Biting edge of the teeth
When the surface of the teeth becomes grooved
Cells From which connective tissue evolve
Origin of the tooth

25. Maxillary Artery
Largest of the branches of the external carotid artery; supplies facial structure
The largest of the salivary glands which lie just below and in front of the ear
Composed of mucosa and surrounds the necks of the teeth
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

26. Ameloblast
The groove below the lower lips that separates the lips from the chin
Third tooth from the midline
Enamel forming cells
The area on the crown of the tooth that is nearest the gingival

27. Hard Palate
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Triferacated
Assist in the movement and functioning of the tongue
A bony plate covered with keratinized tissue located in the anterior portion of the palate

28. Mantle Dentin
Formed by the fibroblast cells and secures the tooth in the socket
Disk that acts like a cushion between the temporal bone and the condyloid process
A bony projection that separates each socket
The first predentin that is formed and matures within the tube

29. What is the maxillary cuspid known as?
Fleshy elevation under the tongue
Synovial fluid
The cornerstone of the mouth
Excess bone formations under the tongue on the alvellar bone

30. Supplemental Groove
When the surface of the teeth becomes grooved
Radiates from the developmental groove
The disc becomes displaced
The portion of the tooth that meets the gingiva

31. Interdental Septum
Mandibular central incisors
Trigeminal - facial - glossopharyngeal - hypoglossal
A bony projection that separates each socket
Cheek bones--the most breakable bone in the body

32. Pulpitis
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Divides the crown and the root
When the tissue becomes inflamed
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

33. Hypercementosis
Two cortical bone plates that come together between each tooth
Causes a thickening of the cementum around the apex
A shallow v-shaped depression located below the bottom of the nose and above the lips
Tissue fluid surrounding the cell membrane of the odontoblast

34. What is another name for premolars?
Oval structures that are located on the dorsal surface of the tongue
Bi-cuspids
Drains the superficial veins of the face and neck into the subclavian vein
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

35. Lacrimal Bones
Circle and tighten the gingival margin around the neck of the tooth
Molars
Constricts the nasopharyngeal passage and elevates the larynx
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

36. Alveolar Crest
Small grooves noted on some teeth
Cells develop into different tissues
Two cortical bone plates that come together between each tooth
Drains the floor of the mouth

37. Pterygoid plexus of the veins
Portion of the lips that are red
Secrete saliva to assist in process of digestion
A junction or center of veins that directly or indirectly drain a vast area
Tissue fluid surrounding the cell membrane of the odontoblast

38. Palatine Raphe
Ligaments and muscles of mastication
Biting edge of the teeth
The slightly raised line extending down the middle of the hard palate
6 years old

39. Function of Palatopharyngeal
Constricts the nasopharyngeal passage and elevates the larynx
Convex area on the lingual surface near gingiva
Portion of the lips where the skin meets the vermilion zone
Small head - low nasal bridge - thin upper lip - small mandible

40. Function of Platysma
Origin - fixed point - insertion - movable point
Supportive fibers that anchor the tooth to the bone
Draws down the mandible and corners of the mouth
Orbicularis oris - buccinator - mentalis - zygomatic major

41. Hyoid Bone
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
A dense tissue covered with mucous membrane that can withstand chewing
The corners of the mouth where the top and bottom lip meet
Shed from the oral cavity

42. Ligament
Located on the inside of the body of the ramus
Retracts the tongue and raises the tip of the tongue
Band of fibrous tissue which attaches bone to bone
Aid in attaching the gingiva to the alveolar bone

43. Enamel Lamellae
Divides the crown and the root
20
Narrow long enamel tuft
Cells develop into different tissues

44. Mental Nerve Branch
Largest division of the trigeminal nerve
When the dentin is exposed
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

45. What teeth are removed if overcrowding occurs?
Looking at the border of the tongue
Bicuspids
The fixed attachment of a muscle
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

46. Cleft Palate
Enamel forming cells
The moveable attachment of the muscle
When the surface of the teeth becomes grooved
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

47. Mastication
Chewing and swallowing food
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Small head - low nasal bridge - thin upper lip - small mandible
Dividing point of a multi-rooted tooth

48. What are the 4 extrinsic muscles of the tongue
Third tooth from the midline
Genioglossus - hyoglossus - styloglossus - palatoglossus
Small yellowish glands on the labial mucosa
Depresses the tongue

49. Function of Palatoglossus
Elevates the posterior portion of the tongue and narrows the fauces
Follows the length of the body of the mandible past the last tooth and up to the ramus
The layer of dentin that surrounds the pulp
Curve outward

50. When do the primary teeth begin erupting and are fully erupted?
The disc becomes displaced
The ridges that run horizontally across the hard palate behind the incisive papilla
6 months/3years
Natural teeth in position