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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. Morpho differentiation
Bluish veins that run the length of the tongue
Disk that acts like a cushion between the temporal bone and the condyloid process
The outer edge of the nostril
The development of different forms

2. Dentoperiosteal Fiber Groups
Supportive fibers that anchor the tooth to the bone
Study of the structure and form of the teeth
Pointed elongations of the pulp
A horseshoe shaped groove that follow the curve of the dental arch

3. Apical Fiber Group
Creates the wall of the dentinal tubule
Pulls the hyoid bone and the tongue anteriorly
Resists forces that try to pull the tooth outward
The largest of the salivary glands which lie just below and in front of the ear

4. Articular Disc
Draws down the mandible and corners of the mouth
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Set of arches found farther in the back of the throat

5. Function of Digastric
Upper arch of the teeth
Largest of the branches of the external carotid artery; supplies facial structure
A line that represents the alveolus bone lining the socket
Lift the hyoid bone and assist in opening the mouth

6. Embrasure
Triangular space in the gingival direction when two adjacent teeth are in contact
A line of tissue that extends from the tongue to the floor of the mouth
Bone that surrounds the root of the tooth
Digstric - Mylohyoid - stylohyoid - geniohyoid

7. Denticion
Located in a depressed area between the pillars
Triferacated
6 years old
Natural teeth in position

8. What is Ankyloglossia and who can treat it / What is the treatment called?
A condition where the lower frenum attachment is very short/DDS/frenectomy
Scroll like bones outside the nasal cavaties
The cornerstone of the mouth
Mildest form of cleft palate

9. Concave
Moves the head backward and laterally
Primary and permanent
Cut - tear - and grind food
Indented

10. Cuspid
Trigeminal nerve--because it ennervates the maxilla and the mandible
Third tooth from the midline
Supplies blood to the brain and the eyes
Respiratory system - digestive system and glandular organs

11. Histo Differentiation
Appears to be loosely attached - covering the alveolar bone.
Slight ridges on the cervical third of certain teeth that extend mesiodistally
A flap of tissue on the on the buccal mucosa
Cells develop into different tissues

12. Horizontal Fiber Group
Greater - lesser - naso palatine nerves
Excess bone formations under the tongue on the alvellar bone
Functions the same as the alveolar cfg; originate in alveolar bone
The inner surface of the cheeks

13. Mesial
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Two vertical extensions of the mandible
The development of different tissues
Surface towards the midline

14. How many cusps/ roots do the maxillary first molars have?
Where the proximal sides of two teeth come together and touch
2 small raised folds of tissue where the lingual frenum attaches
The development of different cells
4/5 cusps/ 3 roots

15. Lesser Palatine Nerve
Smaller branch that ennervates the soft palate uvula and tonsils
Disk that acts like a cushion between the temporal bone and the condyloid process
An enclosed area that matures into dentin - cementum and pulp
Supportive fibers that anchor the tooth to the bone

16. Hypercementosis
Cheek bones--the most breakable bone in the body
Drains the facial structures beginning near the eye and descending toward the mandible
When cells rapidly increase in number
Causes a thickening of the cementum around the apex

17. Philtrum
Dentin found between the tubules
4 cusps/ bifurcated
Sharp projection on the under surface of the temporal bone
A shallow v-shaped depression located below the bottom of the nose and above the lips

18. Palantine Tonsils
Largest facial bone with two sections joined at the median suture
Band of fibrous tissue which attaches bone to bone
Located in a depressed area between the pillars
The cornerstone of the mouth

19. Vestibule
Healthy gingival tissue with an orange texture
4th week
20
A pocket formed by the soft tissue of cheeks and gingiva

20. Succedaneous teeth
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Permeante teeth replace the primary teeth
Third tooth from the midline

21. Vestibule Fornix
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
The deepest point of the vestibule
Formed by the fibroblast cells and secures the tooth in the socket
A dense tissue covered with mucous membrane that can withstand chewing

22. Meniscus
Disk that acts like a cushion between the temporal bone and the condyloid process
Composed of mucosa and surrounds the necks of the teeth
The cornerstone of the mouth
Separation of the upper lip ( 1 of 1000 live births)

23. Secondary Dentin
Elevates the posterior portion of the tongue and narrows the fauces
Resists intrusive forces that try to push the tooth inwards
Forms after the completion of the apical foramen
Two vertical extensions of the mandible

24. Primary Dentin
The slightly raised line extending down the middle of the hard palate
The space between the unattached gingiva and the tooth
Forms the bulk of the tooth
Forms a large cavity above the roots of the maxillary molars

25. Attached Gingiva
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Corners of the mouth
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Extends from the mucogingival junction to the gingival groove

26. Function of Stylohyoid
Portion of the lips that are red
20
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Draws the hyoid bone superiorly and posteriorly and stabilizes it

27. What are the extrinsic muscles of the tongue responsible for?
Chewing and swallowing food
Assist in the movement and functioning of the tongue
Sharp projection on the under surface of the temporal bone
To dissolve

28. Xerostomia
4/5 cusps/ 3 roots
Excess dryness of the mouth
A dense tissue covered with mucous membrane that can withstand chewing
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

29. Fordyce's Spots
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Two vertical extensions of the mandible
Small raised projections where taste buds are located
Small yellowish glands on the labial mucosa

30. Buccal
9 weeks thru birth
Follows the inside of the ramus and the body of the mandible
Drains the Pterygoid plexus of the veins
Outside surface Which is towards the cheek - on posterior teeth

31. Alveolar Crest
Conception thru the first two weeks
Forms into the inner lining of the oral cavitiy and enamel of the teeth
The slightly raised line extending down the middle of the hard palate
Two cortical bone plates that come together between each tooth

32. What are the 4 pairs of muscles of mastication!
Growth from the oral epithelium that gives rise to the tooth buds
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Resist rotational forces and hold teeth in inter-proximal contact
Formed by the uniting of lobes during development of crown

33. Xygomatic bones
Cut - tear - and grind food
Conception thru the first two weeks
Cheek bones--the most breakable bone in the body
Largest of the branches of the external carotid artery; supplies facial structure

34. External Jugular Vein
Linear elevation of the tooth
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Drains the superficial veins of the face and neck into the subclavian vein
Buccal - lingual - and inferior alveolar

35. Cervical Third
The area on the crown of the tooth that is nearest the gingival
Lower arch of the teeth
Two
Full deep rich sound in nasal cavity

36. Circular Ligament Fiber Groups
Enamel is thinner - pulp chamber is smaller -
Full deep rich sound in nasal cavity
Circle and tighten the gingival margin around the neck of the tooth
Assist in the movement and functioning of the tongue

37. Occlusal
Divides the crown and the root
Disk that acts like a cushion between the temporal bone and the condyloid process
The mandibular molars
Pulverizing or chewing surface

38. How much saliva do the salivary glands produce in 24 hours?
4th week
2 to 3 pints
Developmental segment of a tooth
Band of fibrous tissue which attaches bone to bone

39. Buckle groove
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Assists in elevating the chin
The crown of the tooth that is nearest the incisal edge near the anterior tooth
The smallest of the salivary glands located on the floor of the mouth which empty into the mouth thru either the ducts of Rivinus or Bartholin

40. Maxilla
Resists forces that try to pull the tooth outward
Largest facial bone with two sections joined at the median suture
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
Inside of the maxillary teeth

41. Lingual
Inside surface Which is towards the tongue - on anterior teeth
Wings of the sphenoid bone
Function to resist rotational forces and tilting
Resist rotational forces and hold teeth in inter-proximal contact

42. Philtrum
Bluish veins that run the length of the tongue
Arteries supplying blood to most of the head and the neck
Draws down the mandible and corners of the mouth
Vertical groove on the midline of the upper lip

43. Lacrimal Bones
Drains the facial structures beginning near the eye and descending toward the mandible
Healthy gingival tissue with an orange texture
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Maxillary third molar

44. Xygote
A bony plate covered with keratinized tissue located in the anterior portion of the palate
9 months (5 months ultrasound to tell sex)
Conception thru the first two weeks
Draws down the mandible and corners of the mouth

45. Maxillary Sinus
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Initiation of the tooth begins
Forms a large cavity above the roots of the maxillary molars
A projection that extends off the back of the soft palate

46. Dentinal Tubules
Joined at the midline and are often referred to as the median Palatine suture
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Cut - tear - and grind food
Tubules that pass through the entire surface of the dentin

47. Retromolar Area
Disk that acts like a cushion between the temporal bone and the condyloid process
A triangular area located behind the last molar
Three cusps/ trifurcated
Fleshy elevation under the tongue

48. Rod Core
Origin of the tooth
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Inner portion of the enamel rod
A faint line going from the ala of the nose to the corner of the mouth

49. Interdental Gingiva
The layer of dentin that surrounds the pulp
Small bony projections surrounding the lingual foramen
An extension of an unattached gingiva and the tooth
Depresses the tongue

50. Function of Geniohyoid
Maxillary first molar
Forming organ takes shape and resembles the shape of a bell
Pulls the hyoid bone and the tongue anteriorly
Intervating the anterior teeth and the labial gingiva