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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. Ridge
Palatoglossus - palatopharyngeal
Linear elevation of the tooth
Small bony projections surrounding the lingual foramen
Largest facial bone with two sections joined at the median suture

2. Xygomatic bones
Cheek bones--the most breakable bone in the body
Cells that form dentin
Supplies blood to the brain and the eyes
Origin - fixed point - insertion - movable point

3. Contact Area
Inner portion of the enamel rod
Band of fibrous tissue which attaches muscle to bone
Where the proximal sides of two teeth come together and touch
The mandibular molars

4. Occlusal
Pulverizing or chewing surface
Trigeminal nerve--because it ennervates the maxilla and the mandible
The teeth located at the back of the mouth
The corners of the mouth where the top and bottom lip meet

5. Glenoid Fossa
Healthy gingival tissue with an orange texture
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Oval depression of temporal bone in condyloid process
The internal surface at the center of the mandible

6. Inferior Nasal Conchae
Week 11
Molaris meaning millstone
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
Scroll like bones outside the nasal cavaties

7. What teeth are removed if overcrowding occurs?
Retracts or depresses the tongue
Bicuspids
Greater - lesser - naso palatine nerves
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

8. What are the characteristics of deciduous teeth?
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Of or pertaining to area surrounding naval cavity
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

9. Fibroblasts
Cells From which connective tissue evolve
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Oval structures that are located on the dorsal surface of the tongue
Where the proximal sides of two teeth come together and touch

10. Cleft Palate
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
The groove below the lower lips that separates the lips from the chin
Cluster of tissue that manufactures and secrets fluid
Allow flexibility during mastication - speech

11. Denticion
Enamel forming cells
Natural teeth in position
Palatoglossus - palatopharyngeal
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

12. Gingiva
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Digstric - Mylohyoid - stylohyoid - geniohyoid
Composed of mucosa and surrounds the necks of the teeth
Two

13. Morpho differentiation
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
6 months/3years
Place where the groove comes together or fissures cross
The development of different forms

14. Furcation
Excess bone in the middle of the palate
The outer edge of the nostril
The space between the unattached gingiva and the tooth
Dividing point of a multi-rooted tooth

15. Frenum
A flap of tissue on the on the buccal mucosa
Origin - fixed point - insertion - movable point
The teeth located at the back of the mouth
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

16. Periodontal Ligaments
Formed by the fibroblast cells and secures the tooth in the socket
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Linear elevation of the tooth
Bifurcated/ 5 cusps

17. Maxillary vein
20
(free gingiva) surrounds the teeth
Drains the Pterygoid plexus of the veins
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

18. Function of Hyoglossus
Opening for the ear
Depresses the tongue
Inner portion of the enamel rod
A flap of tissue on the on the buccal mucosa

19. Osteoclasts
Extends from the medial corner of the eye to the nasal cavity
Band of fibrous tissue which attaches muscle to bone
The study of the microscopic structure and functions of tissues
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

20. Stensens' Duct (aka Parotid)

21. Imbracation Lines
The connective tissue of the marginal gingiva
The outer edge of the nostril
The largest of three openings located in the posterior region of the hard palate
Small curved lines that run parellel to the CEJ

22. Circumvallate Papillae
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Looking at the border of the tongue
Maxillary first molar

23. Apposition
The cornerstone of the mouth
Pointed or rounded mounds on the crown of the tooth
A line of demarcation between the attached gingiva and alveolar mucosa
Calcium salts are deposited into formed tooth

24. Facial Vein
The portion of the tooth that meets the gingiva
Cells From which connective tissue evolve
Drains the facial structures beginning near the eye and descending toward the mandible
Retracts the tongue and raises the tip of the tongue

25. Dental Lamina
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
4 cusps/ bifurcated
Place where the groove comes together or fissures cross
Growth from the oral epithelium that gives rise to the tooth buds

26. Posterior Superior Alveolar Nerve
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
2 to 3 pints
An overgrowth of the gingival tissue
Small linear depression

27. Genial Tubercles
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Small bony projections surrounding the lingual foramen
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
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

28. Lingual Foramen
The internal surface at the center of the mandible
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Inside surface Which is towards the tongue - on anterior teeth
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

29. Horizontal Fiber Group
Functions the same as the alveolar cfg; originate in alveolar bone
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Resists forces that try to pull the tooth outward
Digstric - Mylohyoid - stylohyoid - geniohyoid

30. Quadrants
Quarters of the teeth
Initiation of the tooth begins
Corners of the mouth
Origin - fixed point - insertion - movable point

31. Gingival Groove
6 months/3years
Molars
Incremental lines around the layers of the enamel matrix
The line of demarcation between the attached gingiva and the marginal gingiva

32. How many roots/ cusps does the mandibular first molar have?
20
A line of tissue that extends from the tongue to the floor of the mouth
Layers of tooth tissue become calcified
Bifurcated/ 5 cusps

33. Dentinal Hypersensitivity
Retracts or depresses the tongue
Supplies blood to the brain and the eyes
When the dentin is exposed
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

34. Ligament
Drains the floor of the mouth
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Band of fibrous tissue which attaches bone to bone
2 small raised folds of tissue where the lingual frenum attaches

35. Retromolar Area
A triangular area located behind the last molar
Aid in attaching the gingiva to the alveolar bone
Inner portion of the enamel rod
The development of different cells

36. Mantle Dentin
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Two weeks thru 8th week
The first predentin that is formed and matures within the tube

37. Oblique Fiber Group
Respiratory system - digestive system and glandular organs
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Resists intrusive forces that try to push the tooth inwards
Platysma - trapezius - sternocleidomastoid

38. Exfoliated
Disk that acts like a cushion between the temporal bone and the condyloid process
Small dark brushes
Tubules that pass through the entire surface of the dentin
Shed from the oral cavity

39. Mental Protuberance
The tip of the chin
Place where the groove comes together or fissures cross
Teeth will not erupt in proper position
Constricts the nasopharyngeal passage and elevates the larynx

40. Mental Artery
Separates the developing oral cavities from the nasal cavities
Where the ramus meets the body of the mandible on the outside border
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Extends from the mucogingival junction to the gingival groove

41. External Carotid Artery
Biting edge of the teeth
Supplies blood to the face and oral cavity
Branches off the inferior alveolar artery before intering the mandibular canal
Formed by the fibroblast cells and secures the tooth in the socket

42. What are the two muscles of the soft palate?
Palatoglossus - palatopharyngeal
Oval structures that are located on the dorsal surface of the tongue
Pulls the hyoid bone and the tongue anteriorly
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

43. What are the characteristics of permanent teeth?
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Enamel is thinner - pulp chamber is smaller -
Trigeminal nerve--because it ennervates the maxilla and the mandible
2 small raised folds of tissue where the lingual frenum attaches

44. Lateral Incisor
Three bulges on the incisal edge
Follows the inside of the ramus and the body of the mandible
Second teeth next to central incisors
Draws the hyoid bone superiorly and posteriorly and stabilizes it

45. Stippled
Rounded depression on a tooth
Healthy gingival tissue with an orange texture
Found near the cementoenamel junction
The mandibular molars

46. Interdental Ligament Group
Found only in multi-rooted teeth and resists rotational forces
Joined at the midline and are often referred to as the median Palatine suture
Forms into dentin - cementum and pulp of the teeth
Resist rotational forces and hold teeth in inter-proximal contact

47. Greater Palatine Nerve
Drains the floor of the mouth
Retracts or depresses the tongue
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

48. Hard Palate
Largest division of the trigeminal nerve
Supplies blood to the roots and periodontal ligaments of the interior teeth
A bony plate covered with keratinized tissue located in the anterior portion of the palate
To bulge of curve outward

49. Common Carotid
Covers muscle tissue in the posterior portion of the palate
Excess bone formations under the tongue on the alvellar bone
The corners of the mouth where the top and bottom lip meet
Arteries supplying blood to most of the head and the neck

50. TMJ bones are bathed In what solution?
Shaping the tongue during speech - mastication and swallowing
Bicuspids
Interdental ligament
Synovial fluid