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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.
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. Palatine Bones
Joined at the midline and are often referred to as the median Palatine suture
Located behind the ramus of the mandible and branches into five arteries
Scroll like bones outside the nasal cavaties
Middle two teeth in the mouth

2. Primary Dentin
Forms the bulk of the tooth
Pointed elongations of the pulp
Band of fibrous tissue which attaches bone to bone
4th week

3. Dental Sac
Tissue covering the alveolar processes
An enclosed area that matures into dentin - cementum and pulp
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Surface away from the midline

4. Meniscus
Disk that acts like a cushion between the temporal bone and the condyloid process
Resists intrusive forces that try to push the tooth inwards
Resist rotational forces and hold teeth in inter-proximal contact
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

5. Soft Palate
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Covers muscle tissue in the posterior portion of the palate
Inside of the maxillary teeth
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

6. Alveologingival Fiber Groups
Aid in attaching the gingiva to the alveolar bone
The mandibular molars
Sharp projection on the under surface of the temporal bone
Arteries supplying blood to most of the head and the neck

7. Fimbriated Folds
Shaping the tongue during speech - mastication and swallowing
Folds of tissue to the the lingual veins
Resulting from an imperfect union where the lobes come together
Folds of tissue that extend horizontally from the uvula to the base of the tongue

8. When does the maxillary second molar erupt?
Duct located on the parotid papilla
12 years
Small raised projections where taste buds are located
Assists in elevating the chin

9. Histo Differentiation
The groove below the lower lips that separates the lips from the chin
Set of arches found farther in the back of the throat
Substances between cells
Cells develop into different tissues

10. Gingival Groove
Maxillary first molar
Extreme variations from the norm
The line of demarcation between the attached gingiva and the marginal gingiva
Resists intrusive forces that try to push the tooth inwards

11. Nasmyths Membrane
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Pointed or rounded mounds on the crown of the tooth
Follows the length of the body of the mandible past the last tooth and up to the ramus
Covering over the enamel that is left over from the epithelium ameloblasts

12. Cervical Third
Smaller branch that ennervates the soft palate uvula and tonsils
The area on the crown of the tooth that is nearest the gingival
Act to maintain the gingival integrity of the marginal gingiva
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

13. Frenum
Causes a thickening of the cementum around the apex
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Excess bone in the middle of the palate
Resists forces that try to pull the tooth outward

14. Mental Artery
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
The mandibular first premolar
Calcium salts are deposited into formed tooth
Quarters of the teeth

15. Maxillary Arch
A bony plate covered with keratinized tissue located in the anterior portion of the palate
A condition where the lower frenum attachment is very short/DDS/frenectomy
Upper arch of the teeth
The space between the unattached gingiva and the tooth

16. Tome's process
Papillae that give the tongue the strawberry effect
Responsible for laying down the enamel matrix into place
Slight ridges on the cervical third of certain teeth that extend mesiodistally
An overgrowth of the gingival tissue

17. Enamel Tufts
Elevates the posterior portion of the tongue and narrows the fauces
Small grooves noted on some teeth
Responsible for laying down the enamel matrix into place
Small dark brushes

18. Common Carotid
Arteries supplying blood to most of the head and the neck
Hinge motion and gliding movement
The mandibular first premolar
When the tissue becomes inflamed

19. Pterygoid Process
A faint line going from the ala of the nose to the corner of the mouth
The study of the microscopic structure and functions of tissues
Depresses the tongue
Wings of the sphenoid bone

20. Cusp of Caribelli
Largest facial bone with two sections joined at the median suture
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
A flap of tissue on the on the buccal mucosa

21. Bud stage
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Initiation of the tooth begins
Separation of the upper lip ( 1 of 1000 live births)

22. Gums
Tissue covering the alveolar processes
Small head - low nasal bridge - thin upper lip - small mandible
Formed by the uniting of lobes during development of crown
Orbicularis oris - buccinator - mentalis - zygomatic major

23. Hypercementosis
Orbicularis oris - buccinator - mentalis - zygomatic major
Duct located on the parotid papilla
Branches off the inferior alveolar artery before intering the mandibular canal
Causes a thickening of the cementum around the apex

24. Cemental Spurs
Smaller branch that ennervates the soft palate uvula and tonsils
Found near the cementoenamel junction
Composed of mucosa and surrounds the necks of the teeth
A shallow v-shaped depression located below the bottom of the nose and above the lips

25. Eruption
Tooth emerges from gum tissue and becomes visible
The corners of the mouth where the top and bottom lip meet
Small bony projections surrounding the lingual foramen
The first predentin that is formed and matures within the tube

26. Ameloblast
Lift the hyoid bone and assist in opening the mouth
Enamel forming cells
The ridges that run horizontally across the hard palate behind the incisive papilla
Substances between cells

27. Median Sulcus
The study of the microscopic structure and functions of tissues
What divides the tongue in half and runs from the base to the tip of the tongue
Where the ectoderm layer matures into the enamel
2 small raised folds of tissue where the lingual frenum attaches

28. Occlusal
Band of fibrous tissue which attaches muscle to bone
Wings of the sphenoid bone
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Pulverizing or chewing surface

29. Facial Vein
Two cortical bone plates that come together between each tooth
Divides the crown and the root
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Drains the facial structures beginning near the eye and descending toward the mandible

30. Incisive Papilla
Lining covers inside of the oral cavity
A raised area of tissue laying behind the maxillary central incisors on the hard palate
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
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct

31. Gingival Hyperplasia
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
An overgrowth of the gingival tissue
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Convex area on the lingual surface near gingiva

32. Zygomatic nerve
Excess dryness of the mouth
Oval depression of temporal bone in condyloid process
Elevates the posterior portion of the tongue and narrows the fauces
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch

33. Internal Jugular Vein
Maxillary third molar
Quarters of the teeth
Drains the maxiallary artery and superficial temporal arteries
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

34. Philtrum
Located on the inside of the body of the ramus
Joined at the midline and are often referred to as the median Palatine suture
Vertical groove on the midline of the upper lip
The mandibular first premolar

35. Function of Styloglossus
Retracts the tongue and raises the tip of the tongue
The portion of the tooth that meets the gingiva
Week 12
The teeth located at the back of the mouth

36. When do the primary teeth begin erupting and are fully erupted?
Bifurcated/ 5 cusps
The inner surface of the lips
Smaller branch that ennervates the soft palate uvula and tonsils
6 months/3years

37. Secondary Dentin
Forms after the completion of the apical foramen
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Opening for the ear
Conception thru the first two weeks

38. Agenesis
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Occurs in unusual ways and distorted crowns may appear
Follows the length of the body of the mandible past the last tooth and up to the ramus
The fixed attachment of a muscle

39. Ala of the Nose
The connective tissue of the marginal gingiva
Bi-cuspids
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
The outer edge of the nostril

40. What are the 4 pairs of muscles of mastication!
Inner portion of the enamel rod
Trigeminal - facial - glossopharyngeal - hypoglossal
Supplies blood to the face and oral cavity
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

41. Function of Palatoglossus
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
The tip of the chin
Molars
Elevates the posterior portion of the tongue and narrows the fauces

42. Imbracation Lines
Set of arches found farther in the back of the throat
Allow flexibility during mastication - speech
Small curved lines that run parellel to the CEJ
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

43. Dentinal Tubules
Tubules that pass through the entire surface of the dentin
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Smaller branch that ennervates the soft palate uvula and tonsils

44. Alveolar Crest Fiber Group
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Extreme variations from the norm
Function to resist rotational forces and tilting

45. Marginal Ridges
Elevated are of enamel that forms the Mesial and distal borders
Forms a large cavity above the roots of the maxillary molars
Teeth after cuspids
Forms the bulk of the tooth

46. Styloid Process
Largest facial bone with two sections joined at the median suture
Sharp projection on the under surface of the temporal bone
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
The mandibular first premolar

47. Midline
Small raised projections where taste buds are located
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Middle line of the teeth

48. Duct
9 weeks thru birth
Canal or passage for fluid
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
The fixed attachment of a muscle

49. Paranasal
Maxillary first molar
9 weeks thru birth
Of or pertaining to area surrounding naval cavity
Scroll like bones outside the nasal cavaties

50. Anatomical root
Portion covered with cementum
Genioglossus - hyoglossus - styloglossus - palatoglossus
Elevates the posterior portion of the tongue and narrows the fauces
12 years