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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. Lingual
Resist rotational forces and hold teeth in inter-proximal contact
Covers muscle tissue in the posterior portion of the palate
A dense tissue covered with mucous membrane that can withstand chewing
Inside surface Which is towards the tongue - on anterior teeth

2. Xygote
Rounded depression on a tooth
Assist in depressing the mandible and elevating the tongue
Conception thru the first two weeks
Compact bone plate of the facial and lingual surfaces

3. External Carotid Artery
The teeth located at the back of the mouth
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
The mandibular first premolar
Supplies blood to the face and oral cavity

4. Gingival Groove
The line of demarcation between the attached gingiva and the marginal gingiva
Interdental ligament
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Moves the head backward and laterally

5. Torus
Excess bone in the middle of the palate
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Supplies blood to the roots and periodontal ligaments of the molars and premolars
The slightly raised line extending down the middle of the hard palate

6. Anomalies
No bicuspids/ no 3rd molars
Excess dryness of the mouth
Extreme variations from the norm
A bony plate covered with keratinized tissue located in the anterior portion of the palate

7. Circumpulpal Dentin
A bat shaped bone which forms the anterior portion of the skull
The layer of dentin that surrounds the pulp
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Synovial fluid

8. Sharpey's Fibers
Layers of tooth tissue become calcified
Acts as anchors between the alveolar bone and the tooth
Portion of the lips where the skin meets the vermilion zone
H20 - mucin - organic salts and digestive enzymes

9. Morphology
Bifurcated/ 5 cusps
Oval depression of temporal bone in condyloid process
Study of the structure and form of the teeth
Enamel forming cells

10. Zygomatic nerve
Incremental lines around the layers of the enamel matrix
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Canal or passage for fluid
Secrete saliva to assist in process of digestion

11. Periodontium
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Mucosa that covers the alveolar bone
Oval structures that are located on the dorsal surface of the tongue
Located on the inside of the body of the ramus

12. What are the largest and strongest of the mandibular teeth
The mandibular molars
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Week 12
Excess dryness of the mouth

13. Pulp Stones
Trigeminal - facial - glossopharyngeal - hypoglossal
The space between the unattached gingiva and the tooth
Calcified masses of dentin
Genioglossus - hyoglossus - styloglossus - palatoglossus

14. Mental Nerve Branch
Small dark brushes
Pointed elongations of the pulp
Largest division of the trigeminal nerve
Small raised projections where taste buds are located

15. Linea Alba
Indented
The cornerstone of the mouth
Bone that surrounds the root of the tooth
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

16. Interradicular Septum
Slight ridges on the cervical third of certain teeth that extend mesiodistally
The tip of the chin
The bone that separates the root on a tooth
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

17. Tome's process
Synovial fluid
Responsible for laying down the enamel matrix into place
Elevated are of enamel that forms the Mesial and distal borders
Extends from the medial corner of the eye to the nasal cavity

18. What is the largest cranial nerve and the most important to dental auxillaries and why?
Cut - tear - and grind food
Small yellowish glands on the labial mucosa
Small bony projections surrounding the lingual foramen
Trigeminal nerve--because it ennervates the maxilla and the mandible

19. Pulp horns
Pointed elongations of the pulp
Quarters of the teeth
Pulls the hyoid bone and the tongue anteriorly
9 months (5 months ultrasound to tell sex)

20. Primary Dentin
Origin of the tooth
Forms the bulk of the tooth
H20 - mucin - organic salts and digestive enzymes
Vertical groove on the midline of the upper lip

21. What is the most common problem with TMJ
The space between the unattached gingiva and the tooth
The disc becomes displaced
The largest of three openings located in the posterior region of the hard palate
A line of demarcation between the attached gingiva and alveolar mucosa

22. What are the 4 maxillary nerve branches?
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
2 to 3 pints
Separates the developing oral cavities from the nasal cavities
Composed of mucosa and surrounds the necks of the teeth

23. Hard Palate
2 to 3 pints
4 cusps/ bifurcated
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Resist rotational forces and hold teeth in inter-proximal contact

24. Intercellular Substances
Two cortical bone plates that come together between each tooth
When cells rapidly increase in number
Circle and tighten the gingival margin around the neck of the tooth
Substances between cells

25. What is the latin word for molar?
Disk that acts like a cushion between the temporal bone and the condyloid process
Chewing and swallowing food
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Molaris meaning millstone

26. Stenson's Duct
Duct located on the parotid papilla
The mandibular molars
Drains the superficial veins of the face and neck into the subclavian vein
The cornerstone of the mouth

27. Gland
Week 12
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Cluster of tissue that manufactures and secrets fluid
Primitive mouth

28. What are the extrinsic muscles of the tongue responsible for?
Interdental ligament
Mastication - aids in speech - influence facial structure - chewing surfaces
Assist in the movement and functioning of the tongue
The mandibular molars

29. Occlusion third
A flap of tissue on the on the buccal mucosa
Occlusal surface of the posterior tooth
Two
A line of demarcation between the attached gingiva and alveolar mucosa

30. How is the TMJ supported and what controls their movement?
A pocket formed by the soft tissue of cheeks and gingiva
Outside surface Which is towards the cheek - on posterior teeth
Ligaments and muscles of mastication
Interdental ligament

31. Histology
Cells develop into different tissues
A horseshoe shaped groove that follow the curve of the dental arch
The study of the microscopic structure and functions of tissues
Located on the inside of the body of the ramus

32. Cemental Spurs
Constricts the nasopharyngeal passage and elevates the larynx
Moves the head backward and laterally
Found near the cementoenamel junction
The largest of three openings located in the posterior region of the hard palate

33. Marginal GIngiva
Indented
Trigeminal nerve--because it ennervates the maxilla and the mandible
(free gingiva) surrounds the teeth
A shallow v-shaped depression located below the bottom of the nose and above the lips

34. Parotid Papilla
Outside surface Which is towards the lips
A flap of tissue on the on the buccal mucosa
Developmental segment of a tooth
The largest of three openings located in the posterior region of the hard palate

35. Naso Palatine Nerve
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Enamel forming cells
Incremental line indicating trauma of birth
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

36. What are the two muscles of the soft palate?
Palatoglossus - palatopharyngeal
Teeth will not erupt in proper position
Excess dryness of the mouth
Covers muscle tissue in the posterior portion of the palate

37. Free Gingiva
Biting edge of the teeth
The portion of the tooth that meets the gingiva
A junction or center of veins that directly or indirectly drain a vast area
Bicuspids

38. Muscle origine
A shallow v-shaped depression located below the bottom of the nose and above the lips
Drains the Pterygoid plexus of the veins
The fixed attachment of a muscle
Pulls the hyoid bone and the tongue anteriorly

39. What are the four major muscles of facial expression
Narrow long enamel tuft
The tip of the chin
Found near the cementoenamel junction
Orbicularis oris - buccinator - mentalis - zygomatic major

40. Stippled
A bat shaped bone which forms the anterior portion of the skull
Healthy gingival tissue with an orange texture
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
4th week

41. What are the only permeant teeth that are not succedaneous?
Molars
An overgrowth of the gingival tissue
Middle line of the teeth
Tissue fluid surrounding the cell membrane of the odontoblast

42. When do the primary teeth begin erupting and are fully erupted?
Joined at the midline and are often referred to as the median Palatine suture
6 months/3years
Compact bone plate of the facial and lingual surfaces
32

43. Enamel Tufts
Arteries supplying blood to most of the head and the neck
Elevates the posterior portion of the tongue and narrows the fauces
Portion of the lips where the skin meets the vermilion zone
Small dark brushes

44. What is the maxillary cuspid known as?
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Cells From which connective tissue evolve
The cornerstone of the mouth
Extreme variations from the norm

45. Frenum
Cells that form dentin
Elevates the posterior portion of the tongue and narrows the fauces
The corners of the mouth where the top and bottom lip meet
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

46. Gums
Oval depression of temporal bone in condyloid process
A bony projection that separates each socket
Tissue covering the alveolar processes
Forms after the completion of the apical foramen

47. Incisive Papilla
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Act to maintain the gingival integrity of the marginal gingiva
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

48. Function of Platysma
Draws down the mandible and corners of the mouth
The ridges that run horizontally across the hard palate behind the incisive papilla
The connective tissue of the marginal gingiva
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

49. Circular Ligament Fiber Groups
Three bulges on the incisal edge
Circle and tighten the gingival margin around the neck of the tooth
Small linear depression
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

50. Anatomical root
Portion covered with cementum
Resist rotational forces and hold teeth in inter-proximal contact
Middle two teeth in the mouth
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch