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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. Linea Alba
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Extreme variations from the norm
Found near the cementoenamel junction
The crown of the tooth that is nearest the incisal edge near the anterior tooth

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

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3. Labial Mucosa
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Band of fibrous tissue which attaches muscle to bone
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
The inner surface of the lips

4. How many roots/ cusps does the mandibular first molar have?
32
Forms after the completion of the apical foramen
Bifurcated/ 5 cusps
Healthy gingival tissue with an orange texture

5. Cusps
Resulting from an imperfect union where the lobes come together
A bat shaped bone which forms the anterior portion of the skull
Pointed or rounded mounds on the crown of the tooth
Two weeks thru 8th week

6. Enamel Dysplasia
Separates the developing oral cavities from the nasal cavities
Ligaments and muscles of mastication
When the surface of the teeth becomes grooved
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

7. Zygomatic nerve
Small linear depression
Branches off the inferior alveolar artery before intering the mandibular canal
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Follows the length of the body of the mandible past the last tooth and up to the ramus

8. Sulingual Folds
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
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
Cells that form cementum
The corners of the mouth where the top and bottom lip meet

9. Periodontal Ligaments
Digstric - Mylohyoid - stylohyoid - geniohyoid
Joined at the midline and are often referred to as the median Palatine suture
Corners of the mouth
Formed by the fibroblast cells and secures the tooth in the socket

10. How many teeth are in the permanent set of teeth?
32
Occurs in unusual ways and distorted crowns may appear
Constricts the nasopharyngeal passage and elevates the larynx
Pointed elongations of the pulp

11. Ameloblast
Supplies blood to the brain and the eyes
Small bony projections surrounding the lingual foramen
The largest of the salivary glands which lie just below and in front of the ear
Enamel forming cells

12. Retro Mandibular Vein
Platysma - trapezius - sternocleidomastoid
Drains the maxiallary artery and superficial temporal arteries
Stained growth rings in dentin
A small projection in the middle of the upper lip

13. Dentoperiosteal Fiber Groups
Enamel is thinner - pulp chamber is smaller -
Supportive fibers that anchor the tooth to the bone
Cells From which connective tissue evolve
Synovial fluid

14. Nasal-Labial Groove
A rounded area beyond the last posterior maxillary tooth
Covering over the enamel that is left over from the epithelium ameloblasts
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
A faint line going from the ala of the nose to the corner of the mouth

15. What are the extrinsic muscles of the tongue responsible for?
Separates the developing oral cavities from the nasal cavities
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Assist in the movement and functioning of the tongue
Cut - tear - and grind food

16. Buccal
Place where the groove comes together or fissures cross
An enclosed area that matures into dentin - cementum and pulp
2 to 3 pints
Outside surface Which is towards the cheek - on posterior teeth

17. Buccal Mucosa
The inner surface of the cheeks
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Supportive fibers that anchor the tooth to the bone
The tip of the chin

18. Mixed Dentition
Forming organ takes shape and resembles the shape of a bell
Surface towards the midline
Cut - tear - and grind food
A period of both primary teeth and permeant teeth are in the dentition

19. Mental Artery
Natural teeth in position
Small curved lines that run parellel to the CEJ
Calcified masses of dentin
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip

20. What are the largest and strongest of the mandibular teeth
Buccal - lingual - and inferior alveolar
The mandibular molars
Supportive fibers that anchor the tooth to the bone
A small projection in the middle of the upper lip

21. Lesser Palatine Nerve
Smaller branch that ennervates the soft palate uvula and tonsils
Respiratory system - digestive system and glandular organs
A rounded area beyond the last posterior maxillary tooth
Primary and permanent

22. Gestational period
Forms a large cavity above the roots of the maxillary molars
Retracts the tongue and raises the tip of the tongue
Found only in multi-rooted teeth and resists rotational forces
9 months (5 months ultrasound to tell sex)

23. Alveolar Crest Fiber Group
Function to resist rotational forces and tilting
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Narrow long enamel tuft
Mildest form of cleft palate

24. Lobes
Tissue fluid surrounding the cell membrane of the odontoblast
Developmental segment of a tooth
The fixed attachment of a muscle
A condition where the lower frenum attachment is very short/DDS/frenectomy

25. What are the eight landmarks of the face?
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
The teeth located at the back of the mouth
Drains the maxiallary artery and superficial temporal arteries
Convex area on the lingual surface near gingiva

26. Internal Carotid Artery
Oval depression of temporal bone in condyloid process
Supplies blood to the brain and the eyes
Small linear depression
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle

27. Function of Stylohyoid
Divides the crown and the root
Intervating the anterior teeth and the labial gingiva
The inner surface of the cheeks
Draws the hyoid bone superiorly and posteriorly and stabilizes it

28. What is the longest tooth in the mandibular arch?
4/5 cusps/ 3 roots
The development of different forms
The mandibular first premolar
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

29. How many teeth are in the Primary teeth?
20
Shed from the oral cavity
Cells that form cementum
Surface away from the midline

30. Deep Facial Veins
Teeth will not erupt in proper position
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Lining covers inside of the oral cavity

31. Intertubular Dentin
Dentin found between the tubules
The slightly raised line extending down the middle of the hard palate
Lining covers inside of the oral cavity
Narrow long enamel tuft

32. Ligament
Located on the inside of the body of the ramus
Enamel is thinner - pulp chamber is smaller -
Located in a depressed area between the pillars
Band of fibrous tissue which attaches bone to bone

33. Peritubular Dentin
Portion of the lips where the skin meets the vermilion zone
Creates the wall of the dentinal tubule
Enamel is thinner - pulp chamber is smaller -
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

34. Triangular Ridge
Triangular space in the gingival direction when two adjacent teeth are in contact
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
A bat shaped bone which forms the anterior portion of the skull
Growth from the oral epithelium that gives rise to the tooth buds

35. What are the two ways the TMJs move?
Convex area on the lingual surface near gingiva
The largest of three openings located in the posterior region of the hard palate
Three bulges on the incisal edge
Hinge motion and gliding movement

36. Muscle origine
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
The fixed attachment of a muscle
Two weeks thru 8th week
Portion of the root seen in the oral cavity

37. Maxilla
Follows the length of the body of the mandible past the last tooth and up to the ramus
Largest facial bone with two sections joined at the median suture
Maxillary first molar
Substances between cells

38. External Oblique Ridge
Follows the length of the body of the mandible past the last tooth and up to the ramus
Inside surface Which is towards the tongue - on anterior teeth
Corners of the mouth
Cells From which connective tissue evolve

39. Apical Fiber Group
Linear elevation of the tooth
Resists forces that try to pull the tooth outward
Greater - lesser - naso palatine nerves
Pulls the hyoid bone and the tongue anteriorly

40. Contour Lines of Owen
The portion of the tooth that meets the gingiva
Demonstrates a disturbance in the body metabolism
Small yellowish glands on the labial mucosa
Small grooves noted on some teeth

41. Retromolar Area
A triangular area located behind the last molar
Branches off the inferior alveolar artery before intering the mandibular canal
Located in a depressed area between the pillars
Acts as anchors between the alveolar bone and the tooth

42. What teeth are removed if overcrowding occurs?
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Two weeks thru 8th week
Bicuspids
Tubules that pass through the entire surface of the dentin

43. External Jugular Vein
Drains the superficial veins of the face and neck into the subclavian vein
Assists in elevating the chin
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

44. Develop Mental Groove
Formed by the uniting of lobes during development of crown
12 years
A line of tissue that extends from the tongue to the floor of the mouth
Dividing point of a multi-rooted tooth

45. Mamelons
Of or pertaining to area surrounding naval cavity
Tubules that pass through the entire surface of the dentin
Wings of the sphenoid bone
Three bulges on the incisal edge

46. Histology
Mastication - aids in speech - influence facial structure - chewing surfaces
The study of the microscopic structure and functions of tissues
Forms into the inner lining of the oral cavitiy and enamel of the teeth
The gingiva in the floor of the gingival sulcus that attaches to the enamel

47. What is the maxillary cuspid known as?
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Triferacated
The cornerstone of the mouth
Peg shaped crown with a smooth surface

48. Xygote
Outside surface Which is towards the cheek - on posterior teeth
When cells rapidly increase in number
To lubricate the oral cavity and to moisten food
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

49. Odontoblast
Cells that form dentin
Elevated are of enamel that forms the Mesial and distal borders
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Pointed elongations of the pulp

50. Angle of the Mandible
Separates the developing oral cavities from the nasal cavities
Inner portion of the enamel rod
Where the ramus meets the body of the mandible on the outside border
Retracts the tongue and raises the tip of the tongue