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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. Oblique Ridge
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Folds of tissue to the the lingual veins
Three cusps/ trifurcated
Study of the structure and form of the teeth

2. Perikymata
The line of demarcation between the attached gingiva and the marginal gingiva
Functions the same as the alveolar cfg; originate in alveolar bone
Where the ectoderm layer matures into the enamel
Small grooves noted on some teeth

3. Pulp Stones
Calcified masses of dentin
Extends from the medial corner of the eye to the nasal cavity
Outside surface Which is towards the lips
Place where the groove comes together or fissures cross

4. Mandibular Artery
Located behind the ramus of the mandible and branches into five arteries
Extends from the medial corner of the eye to the nasal cavity
The outer edge of the nostril
Small linear depression

5. What is the latin word for molar?
Bifurcated/ 5 cusps
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Mucosa that covers the alveolar bone
Molaris meaning millstone

6. Morphology
Origin - fixed point - insertion - movable point
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Study of the structure and form of the teeth
Occlusal surface of the posterior tooth

7. Greater Palatine Nerve
Assist in the movement and functioning of the tongue
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Outside surface Which is towards the lips
Radiates from the developmental groove

8. Enamel Lamellae
The study of the microscopic structure and functions of tissues
Excess dryness of the mouth
To lubricate the oral cavity and to moisten food
Narrow long enamel tuft

9. Ectoderm
A bat shaped bone which forms the anterior portion of the skull
A line of demarcation between the attached gingiva and alveolar mucosa
Retracts or depresses the tongue
Forms into the inner lining of the oral cavitiy and enamel of the teeth

10. What are the two ways the TMJs move?
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Aid in attaching the gingiva to the alveolar bone
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Hinge motion and gliding movement

11. Gingival Hyperplasia
An overgrowth of the gingival tissue
4 cusps/ bifurcated
H20 - mucin - organic salts and digestive enzymes
Biting edge of the teeth

12. Intertubular Dentin
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Assists in elevating the chin
Teeth after cuspids
Dentin found between the tubules

13. Lingual Vein
Drains the floor of the mouth
To lubricate the oral cavity and to moisten food
Formed by the uniting of lobes during development of crown
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

14. How much saliva is produced daily?
Elevated are of enamel that forms the Mesial and distal borders
1500 millimeters
The largest of the salivary glands which lie just below and in front of the ear
Where the ramus meets the body of the mandible on the outside border

15. External Oblique Ridge
Follows the length of the body of the mandible past the last tooth and up to the ramus
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Set of arches found farther in the back of the throat
Divides the crown and the root

16. Xerostomia
Two weeks thru 8th week
2 to 3 pints
Conception thru the first two weeks
Excess dryness of the mouth

17. What are the extrinsic muscles of the tongue responsible for?
Assist in the movement and functioning of the tongue
Lower arch of the teeth
Three cusps/ trifurcated
Linear elevation of the tooth

18. Sphenoid
Healthy gingival tissue with an orange texture
Resists intrusive forces that try to push the tooth inwards
Three cusps/ trifurcated
A bat shaped bone which forms the anterior portion of the skull

19. What are the 3 branches of the pterygopalatine nerve branch?
Greater - lesser - naso palatine nerves
Tissue fluid surrounding the cell membrane of the odontoblast
Cluster of tissue that manufactures and secrets fluid
Ligaments and muscles of mastication

20. Dentinal Fluid
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Stained growth rings in dentin
Week 12
Tissue fluid surrounding the cell membrane of the odontoblast

21. Enamel Dysplasia
When the surface of the teeth becomes grooved
Band of fibrous tissue which attaches muscle to bone
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Origin of the tooth

22. Mylohyoid Artery
Second teeth next to central incisors
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Branches off the inferior alveolar artery before intering the mandibular canal
Formed by the uniting of lobes during development of crown

23. Fibroblasts
Duct located on the parotid papilla
Canal or passage for fluid
Cells From which connective tissue evolve
Creates the wall of the dentinal tubule

24. Dental Arteries
Secrete saliva to assist in process of digestion
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Excess bone formations under the tongue on the alvellar bone
Smaller branch that ennervates the soft palate uvula and tonsils

25. What are the 2 sets of teeth?
Primary and permanent
Small bony projections surrounding the lingual foramen
Molars
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

26. Cortical Bone
The inner surface of the lips
Compact bone plate of the facial and lingual surfaces
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
The inner surface of the cheeks

27. Glenoid Fossa
Oval depression of temporal bone in condyloid process
Opening in the mouth below the orbit on the maxillary bone
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
The largest of three openings located in the posterior region of the hard palate

28. Cleft Palate
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Bifurcated/ 5 cusps
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Three cusps/ trifurcated

29. Cyto differentiation
The development of different cells
The connective tissue of the marginal gingiva
Calcified masses of dentin
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

30. Rod Core
Teeth after cuspids
Supplies blood to the face and oral cavity
Inner portion of the enamel rod
Interdental ligament

31. Lamina Propria
Cells that form cementum
The connective tissue of the marginal gingiva
Stained growth rings in dentin
A pocket formed by the soft tissue of cheeks and gingiva

32. Retromolar Area
Largest of the branches of the external carotid artery; supplies facial structure
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
A triangular area located behind the last molar
Forms into the inner lining of the oral cavitiy and enamel of the teeth

33. What are the characteristics of deciduous teeth?
Constricts the nasopharyngeal passage and elevates the larynx
Act to maintain the gingival integrity of the marginal gingiva
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Drains the maxiallary artery and superficial temporal arteries

34. Labial
Growth from the oral epithelium that gives rise to the tooth buds
Oval depression of temporal bone in condyloid process
Constricts the nasopharyngeal passage and elevates the larynx
Outside surface Which is towards the lips

35. Embryo
Two weeks thru 8th week
A raised area of tissue laying behind the maxillary central incisors on the hard palate
A faint line going from the ala of the nose to the corner of the mouth
A line of demarcation between the attached gingiva and alveolar mucosa

36. Cemental Spurs
Resists intrusive forces that try to push the tooth inwards
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Functions the same as the alveolar cfg; originate in alveolar bone
Found near the cementoenamel junction

37. Histo Differentiation
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Week 12
Cells develop into different tissues
Middle line of the teeth

38. Lingual
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Supportive fibers that anchor the tooth to the bone
Inside surface Which is towards the tongue - on anterior teeth

39. Cuspid
Third tooth from the midline
1500 millimeters
12 years
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

40. What is the longest tooth in the mandibular arch?
The outer edge of the nostril
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Where the ramus meets the body of the mandible on the outside border
The mandibular first premolar

41. Eruption
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Bifurcated/ 5 cusps
Tissue covering the alveolar processes
Tooth emerges from gum tissue and becomes visible

42. Osteoclasts
Cells that form cementum
The disc becomes displaced
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged

43. What are the four main functions of deciduous teeth?
Where the ectoderm layer matures into the enamel
An extension of an unattached gingiva and the tooth
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Mastication - aids in speech - influence facial structure - chewing surfaces

44. Fossa
The ridges that run horizontally across the hard palate behind the incisive papilla
Rounded depression on a tooth
6 years old
A pocket formed by the soft tissue of cheeks and gingiva

45. Landmarks
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Growth from the oral epithelium that gives rise to the tooth buds
Sharp projection on the under surface of the temporal bone
Genioglossus - hyoglossus - styloglossus - palatoglossus

46. Cingulum
Drains the maxiallary artery and superficial temporal arteries
Dividing point of a multi-rooted tooth
Convex area on the lingual surface near gingiva
Synovial fluid

47. Distal
Permeante teeth replace the primary teeth
Week 11
Incremental lines around the layers of the enamel matrix
Surface away from the midline

48. If a patient receives toxic agents - how long does it take for their sense of taste to return?
Clear fluid secreted by the salivary and mucous glands throughout the mouth
10 days
Follows the length of the body of the mandible past the last tooth and up to the ramus
Cluster of tissue that manufactures and secrets fluid

49. Palatine Bones
Joined at the midline and are often referred to as the median Palatine suture
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
To lubricate the oral cavity and to moisten food
Layers of tooth tissue become calcified

50. Apical Fiber Group
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Resists forces that try to pull the tooth outward
Drains the maxiallary artery and superficial temporal arteries
Constricts the nasopharyngeal passage and elevates the larynx