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Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. Develop Mental Groove
Formed by the uniting of lobes during development of crown
Palatoglossus - palatopharyngeal
Secrete saliva to assist in process of digestion
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

2. Apical Fiber Group
Resists forces that try to pull the tooth outward
A bat shaped bone which forms the anterior portion of the skull
Functions the same as the alveolar cfg; originate in alveolar bone
Narrow long enamel tuft

3. Gingiva
Composed of mucosa and surrounds the necks of the teeth
Small head - low nasal bridge - thin upper lip - small mandible
Depresses the tongue
A shallow v-shaped depression located below the bottom of the nose and above the lips

4. Which molar contains the cusp of Caribelli?
Maxillary first molar
The inner surface of the lips
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Excess dryness of the mouth

5. Horizontal Fiber Group
Full deep rich sound in nasal cavity
Layers of tooth tissue become calcified
Functions the same as the alveolar cfg; originate in alveolar bone
Creates the wall of the dentinal tubule

6. Retromolar Area
Small head - low nasal bridge - thin upper lip - small mandible
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Peg shaped crown with a smooth surface
A triangular area located behind the last molar

7. Alveolar Mucosa
Interdental ligament
Three bulges on the incisal edge
Resist rotational forces and hold teeth in inter-proximal contact
Appears to be loosely attached - covering the alveolar bone.

8. Muscle origine
Mastication - aids in speech - influence facial structure - chewing surfaces
Slight ridges on the cervical third of certain teeth that extend mesiodistally
The fixed attachment of a muscle
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

9. Tome's process
Located on the inside of the body of the ramus
Cells that form cementum
Responsible for laying down the enamel matrix into place
A small projection in the middle of the upper lip

10. Tendon
Band of fibrous tissue which attaches muscle to bone
Mildest form of cleft palate
Divides the crown and the root
Lining covers inside of the oral cavity

11. Incisal Edge
A small projection in the middle of the upper lip
Healthy gingival tissue with an orange texture
Biting edge of the teeth
Radiates from the developmental groove

12. Evanesce
The development of different cells
Forms the remaining 2/3 of the hard and soft palate uvula
Draws the hyoid bone superiorly and posteriorly and stabilizes it
To dissolve

13. What is saliva made of?
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Appears to be loosely attached - covering the alveolar bone.
Opening in the mouth below the orbit on the maxillary bone
H20 - mucin - organic salts and digestive enzymes

14. Agenesis
Cells that form dentin
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Occurs in unusual ways and distorted crowns may appear
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

15. Odontal Fiber Groups
6 years old
Mildest form of cleft palate
Allow flexibility during mastication - speech
Surface towards the midline

16. Fetal Alcohol Syndrome symptons
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Lift the hyoid bone and assist in opening the mouth
Small head - low nasal bridge - thin upper lip - small mandible
Week 12

17. Palatine Raphe
The slightly raised line extending down the middle of the hard palate
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Resists forces that try to pull the tooth outward
Three cusps/ trifurcated

18. Triangular Ridge
Oval depression of temporal bone in condyloid process
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
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
Forms a large cavity above the roots of the maxillary molars

19. Palatine Bones
Joined at the midline and are often referred to as the median Palatine suture
Incremental lines around the layers of the enamel matrix
Looking at the border of the tongue
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

20. Pterygoid Artery
Composed of mucosa and surrounds the necks of the teeth
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
A dense tissue covered with mucous membrane that can withstand chewing
Functions the same as the alveolar cfg; originate in alveolar bone

21. What are the 4 taste senses and where are they located?
Separation of the upper lip ( 1 of 1000 live births)
Linear elevation of the tooth
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
(free gingiva) surrounds the teeth

22. Concave
Indented
Oval depression of temporal bone in condyloid process
Formed by the uniting of lobes during development of crown
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

23. Gland
Small yellowish glands on the labial mucosa
Drains the maxiallary artery and superficial temporal arteries
Cluster of tissue that manufactures and secrets fluid
The outer edge of the nostril

24. What ligament is retained the longest during periodontal disease?
10 days
Shed from the oral cavity
Interdental ligament
Separation of the upper lip ( 1 of 1000 live births)

25. What are the largest and strongest of the mandibular teeth
Drains the superficial veins of the face and neck into the subclavian vein
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
The mandibular molars
Covering over the enamel that is left over from the epithelium ameloblasts

26. What are the 4 muscles of the floor of the mouth?
Pulls the hyoid bone and the tongue anteriorly
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Digstric - Mylohyoid - stylohyoid - geniohyoid
A line of demarcation between the attached gingiva and alveolar mucosa

27. Hyoid Bone
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Duct located on the parotid papilla
Pointed or rounded mounds on the crown of the tooth
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

28. External Auditory Meatus
Band of fibrous tissue which attaches muscle to bone
Where the ramus meets the body of the mandible on the outside border
Opening for the ear
Origin of the tooth

29. Osteoclasts
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
A junction or center of veins that directly or indirectly drain a vast area
Biting edge of the teeth
Narrow long enamel tuft

30. Secondary Dentin
The deepest point of the vestibule
Portion of the root seen in the oral cavity
12 years
Forms after the completion of the apical foramen

31. Pit
Place where the groove comes together or fissures cross
The development of different cells
Fleshy elevation under the tongue
Convex area on the lingual surface near gingiva

32. Primary Dentin
Origin of the tooth
Disk that acts like a cushion between the temporal bone and the condyloid process
Trigeminal - facial - glossopharyngeal - hypoglossal
Forms the bulk of the tooth

33. Buccal
Lift the hyoid bone and assist in opening the mouth
Outside surface Which is towards the cheek - on posterior teeth
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
The development of different tissues

34. Parotid Papilla
Scroll like bones outside the nasal cavaties
A flap of tissue on the on the buccal mucosa
Set of arches found farther in the back of the throat
Resist rotational forces and hold teeth in inter-proximal contact

35. Fossa
Rounded depression on a tooth
When the surface of the teeth becomes grooved
Forms a large cavity above the roots of the maxillary molars
The connective tissue of the marginal gingiva

36. Clinical root
Extends from the mucogingival junction to the gingival groove
Portion of the root seen in the oral cavity
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
(free gingiva) surrounds the teeth

37. Function of Geneoglossus?
Cluster of tissue that manufactures and secrets fluid
Respiratory system - digestive system and glandular organs
Retracts or depresses the tongue
Located on the inside of the body of the ramus

38. Circumpulpal Dentin
Wings of the sphenoid bone
The layer of dentin that surrounds the pulp
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
A flap of tissue on the on the buccal mucosa

39. TMJ bones are bathed In what solution?
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Synovial fluid
Supplies blood to the face and oral cavity
Causes a thickening of the cementum around the apex

40. What are the two muscles of the soft palate?
When the surface of the teeth becomes grooved
Palatoglossus - palatopharyngeal
Causes a thickening of the cementum around the apex
Small head - low nasal bridge - thin upper lip - small mandible

41. Mixed Dentition
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Short tubules that seem to crossover to the enamel
A period of both primary teeth and permeant teeth are in the dentition
The gingiva in the floor of the gingival sulcus that attaches to the enamel

42. Facial Artery
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
Teeth will not erupt in proper position
2 small raised folds of tissue where the lingual frenum attaches
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

43. What are the characteristics of deciduous teeth?
Hinge motion and gliding movement
Mucosa that covers the alveolar bone
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
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

44. What is the smallest tooth in dentition?
Cells develop into different tissues
Small raised projections where taste buds are located
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Mandibular central incisors

45. Gestational period
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Portion covered with cementum
9 months (5 months ultrasound to tell sex)

46. Fibroblasts
Platysma - trapezius - sternocleidomastoid
Cheek bones--the most breakable bone in the body
Enamel is thinner - pulp chamber is smaller -
Cells From which connective tissue evolve

47. What are the eight landmarks of the face?
Branches off the inferior alveolar artery before intering the mandibular canal
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Joined at the midline and are often referred to as the median Palatine suture

48. Cusp of Caribelli
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Moves the head backward and laterally
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Slight ridges on the cervical third of certain teeth that extend mesiodistally

49. Morpho Differentiation
Bi-cuspids
Forming organ takes shape and resembles the shape of a bell
Study of the structure and form of the teeth
Clear fluid secreted by the salivary and mucous glands throughout the mouth

50. Muscle Insertion
The moveable attachment of the muscle
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Largest division of the trigeminal nerve