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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. Alveolar Mucosa
Pulverizing or chewing surface
Mucosa that covers the alveolar bone
Joined at the midline and are often referred to as the median Palatine suture
Two weeks thru 8th week

2. Eruption
Tooth emerges from gum tissue and becomes visible
Initiation of the tooth begins
Assist in depressing the mandible and elevating the tongue
A bony plate covered with keratinized tissue located in the anterior portion of the palate

3. Xygote
Bone that surrounds the root of the tooth
Conception thru the first two weeks
Function to resist rotational forces and tilting
Radiates from the developmental groove

4. Imbracation Lines
Follows the length of the body of the mandible past the last tooth and up to the ramus
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Small curved lines that run parellel to the CEJ
Molaris meaning millstone

5. What teeth do the deciduous (baby) tooth not include?
Shed from the oral cavity
No bicuspids/ no 3rd molars
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
The layer of dentin that surrounds the pulp

6. Bud stage
Demonstrates a disturbance in the body metabolism
Respiratory system - digestive system and glandular organs
An extension of an unattached gingiva and the tooth
Initiation of the tooth begins

7. What is the smallest tooth in dentition?
Excess bone formations under the tongue on the alvellar bone
Mandibular central incisors
Mildest form of cleft palate
Intervating the anterior teeth and the labial gingiva

8. Infraorbital Foramen
Opening in the mouth below the orbit on the maxillary bone
Radiates from the developmental groove
Inside surface Which is towards the tongue - on anterior teeth
The portion of the tooth that meets the gingiva

9. Function of mylohyoid
The fixed attachment of a muscle
Formed by the uniting of lobes during development of crown
Secrete saliva to assist in process of digestion
Assist in depressing the mandible and elevating the tongue

10. Which molar contains the cusp of Caribelli?
Maxillary first molar
Lower arch of the teeth
Band of fibrous tissue which attaches bone to bone
A condition where the lower frenum attachment is very short/DDS/frenectomy

11. Secondary palate
Forming organ takes shape and resembles the shape of a bell
Forms the remaining 2/3 of the hard and soft palate uvula
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Three cusps/ trifurcated

12. Palantine Tonsils
1500 millimeters
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Located in a depressed area between the pillars

13. Peritubular Dentin
Follows the inside of the ramus and the body of the mandible
Creates the wall of the dentinal tubule
The space between the unattached gingiva and the tooth
9 weeks thru birth

14. Dentoperiosteal Fiber Groups
Supportive fibers that anchor the tooth to the bone
Rounded depression on a tooth
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Origin of the tooth

15. Saliva
The layer of dentin that surrounds the pulp
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Outside surface Which is towards the cheek - on posterior teeth
1500 millimeters

16. Fissure
4/5 cusps/ 3 roots
Depresses the tongue
The tip of the chin
Resulting from an imperfect union where the lobes come together

17. Parotid glands
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Appears to be loosely attached - covering the alveolar bone.
What divides the tongue in half and runs from the base to the tip of the tongue
The largest of the salivary glands which lie just below and in front of the ear

18. Palatine Rugae
Forms after the completion of the apical foramen
Second teeth next to central incisors
The ridges that run horizontally across the hard palate behind the incisive papilla
Wings of the sphenoid bone

19. Lingual Frenum
A line of tissue that extends from the tongue to the floor of the mouth
The teeth located at the back of the mouth
An overgrowth of the gingival tissue
Mandibular central incisors

20. Uvula
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
A projection that extends off the back of the soft palate
6 years old

21. What are the 4 taste senses and where are they located?
Small grooves noted on some teeth
Largest of the branches of the external carotid artery; supplies facial structure
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Radiates from the developmental groove

22. Endoderm
Respiratory system - digestive system and glandular organs
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Tissue covering the alveolar processes
Dividing point of a multi-rooted tooth

23. Horizontal Fiber Group
Act to maintain the gingival integrity of the marginal gingiva
Portion of the lips that are red
Functions the same as the alveolar cfg; originate in alveolar bone
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

24. What are the 4 maxillary nerve branches?
Tubules that pass through the entire surface of the dentin
Tooth emerges from gum tissue and becomes visible
Bone that surrounds the root of the tooth
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

25. Marginal GIngiva
Formed by the uniting of lobes during development of crown
Platysma - trapezius - sternocleidomastoid
(free gingiva) surrounds the teeth
A small projection in the middle of the upper lip

26. Mastication
Raised vertical folds of tissue on the lateral border of the tongue
Curve outward
Chewing and swallowing food
A flap of tissue on the on the buccal mucosa

27. Mental Protuberance
The moveable attachment of the muscle
The tip of the chin
A faint line going from the ala of the nose to the corner of the mouth
An extension of an unattached gingiva and the tooth

28. Lingual Vein
Drains the floor of the mouth
Moves the head backward and laterally
Band of fibrous tissue which attaches bone to bone
Arteries supplying blood to most of the head and the neck

29. Inferior Alveolar Artery
Cheek bones--the most breakable bone in the body
A line that represents the alveolus bone lining the socket
The internal surface at the center of the mandible
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

30. Cementoblast
Third tooth from the midline
Cells that form cementum
Fleshy elevation under the tongue
Linear elevation of the tooth

31. Mantle Dentin
The first predentin that is formed and matures within the tube
A faint line going from the ala of the nose to the corner of the mouth
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Composed of mucosa and surrounds the necks of the teeth

32. Alveolar Crest
9 months (5 months ultrasound to tell sex)
Papillae that give the tongue the strawberry effect
Two cortical bone plates that come together between each tooth
Drains the superficial veins of the face and neck into the subclavian vein

33. Imbrication lines
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Where the proximal sides of two teeth come together and touch
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Primitive mouth

34. Interradicular Septum
Rounded depression on a tooth
Largest of the branches of the external carotid artery; supplies facial structure
Lining covers inside of the oral cavity
The bone that separates the root on a tooth

35. Labial-Mental Groove
What divides the tongue in half and runs from the base to the tip of the tongue
The groove below the lower lips that separates the lips from the chin
A junction or center of veins that directly or indirectly drain a vast area
Tissue fluid surrounding the cell membrane of the odontoblast

36. 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
Wearing away of the incisal or occlusal surfaces of the tooth
Resists intrusive forces that try to push the tooth inwards
Radiates from the developmental groove

37. Distal
Small linear depression
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Cheek bones--the most breakable bone in the body
Surface away from the midline

38. Mental Artery
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Corners of the mouth
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
A triangular area located behind the last molar

39. Embryology
Study of prenatal growth and the developing process of an individual
Arteries supplying blood to most of the head and the neck
9 months (5 months ultrasound to tell sex)
Located behind the ramus of the mandible and branches into five arteries

40. Oblique Fiber Group
Resists intrusive forces that try to push the tooth inwards
Bicuspids
Orbicularis oris - buccinator - mentalis - zygomatic major
Middle line of the teeth

41. Neonatal line
Assist in depressing the mandible and elevating the tongue
Molaris meaning millstone
Extends from the medial corner of the eye to the nasal cavity
Incremental line indicating trauma of birth

42. Sulingual Folds
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Two cortical bone plates that come together between each tooth
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

43. Circular Ligament Fiber Groups
The first predentin that is formed and matures within the tube
Circle and tighten the gingival margin around the neck of the tooth
Assist in depressing the mandible and elevating the tongue
Cells that form cementum

44. What is the most common problem with TMJ
A shallow v-shaped depression located below the bottom of the nose and above the lips
Shaping the tongue during speech - mastication and swallowing
Resulting from an imperfect union where the lobes come together
The disc becomes displaced

45. Lamina Dura
When cells rapidly increase in number
Cells that form dentin
Cheek bones--the most breakable bone in the body
A line that represents the alveolus bone lining the socket

46. Naso Palatine Nerve
Biting edge of the teeth
Extreme variations from the norm
Bone that surrounds the root of the tooth
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

47. Attrition
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Wearing away of the incisal or occlusal surfaces of the tooth
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Acts as anchors between the alveolar bone and the tooth

48. Stomedeum
Used to pulverize food
An overgrowth of the gingival tissue
Resists intrusive forces that try to push the tooth inwards
Primitive mouth

49. Glenoid Fossa
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Looking at the border of the tongue
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Oval depression of temporal bone in condyloid process

50. What kind of root does the maxillary first molar have?
Quarters of the teeth
Triferacated
Forming organ takes shape and resembles the shape of a bell
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries