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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. Circular Ligament Fiber Groups
Drains the superficial veins of the face and neck into the subclavian vein
Two weeks thru 8th week
Circle and tighten the gingival margin around the neck of the tooth
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

2. What are the characteristics of permanent teeth?
Mucosa that covers the alveolar bone
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Enamel is thinner - pulp chamber is smaller -
The internal surface at the center of the mandible

3. Facial development
Oval structures that are located on the dorsal surface of the tongue
Acts as anchors between the alveolar bone and the tooth
4th week
Cheek bones--the most breakable bone in the body

4. Torus
Excess bone in the middle of the palate
Small yellowish glands on the labial mucosa
Portion covered with cementum
A dense tissue covered with mucous membrane that can withstand chewing

5. Maxillary Nerve Branch
Forms into the inner lining of the oral cavitiy and enamel of the teeth
The line of demarcation between the attached gingiva and the marginal gingiva
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
2 to 3 pints

6. Mastication
Forming organ takes shape and resembles the shape of a bell
Intervating the anterior teeth and the labial gingiva
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
Chewing and swallowing food

7. Intertubular Dentin
9 months (5 months ultrasound to tell sex)
A triangular area located behind the last molar
Extreme variations from the norm
Dentin found between the tubules

8. Groove
Small linear depression
Shed from the oral cavity
Surface away from the midline
The largest of three openings located in the posterior region of the hard palate

9. Morpho differentiation
Oval structures that are located on the dorsal surface of the tongue
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
The development of different forms

10. What are the four main functions of deciduous teeth?
Incremental lines around the layers of the enamel matrix
Compact bone plate of the facial and lingual surfaces
Mastication - aids in speech - influence facial structure - chewing surfaces
The area on the crown of the tooth that is nearest the gingival

11. Anomalies
Located behind the ramus of the mandible and branches into five arteries
Extreme variations from the norm
Wings of the sphenoid bone
Assist in depressing the mandible and elevating the tongue

12. Mandibular Artery
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Located behind the ramus of the mandible and branches into five arteries
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Clear fluid secreted by the salivary and mucous glands throughout the mouth

13. Anterior Tonsillar Pillar
Folds of tissue that extend horizontally from the uvula to the base of the tongue
4th week
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

14. Symphysis
Layers of tooth tissue become calcified
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Lift the hyoid bone and assist in opening the mouth

15. Mesenchyme Tissue
Dividing point of a multi-rooted tooth
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

16. Dentogingival Fiber Groups
Act to maintain the gingival integrity of the marginal gingiva
Layers of tooth tissue become calcified
Forms the bulk of the tooth
Forms the remaining 2/3 of the hard and soft palate uvula

17. Labial Mucosa
The inner surface of the lips
Bluish veins that run the length of the tongue
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Forms the remaining 2/3 of the hard and soft palate uvula

18. Alveolus
Bone that surrounds the root of the tooth
Interdental ligament
Causes a thickening of the cementum around the apex
Retracts the tongue and raises the tip of the tongue

19. Interdental Ligament Group
Bicuspids
Resist rotational forces and hold teeth in inter-proximal contact
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Acts as anchors between the alveolar bone and the tooth

20. Vestibule
Forms a large cavity above the roots of the maxillary molars
Bony projection found on the bottom border of the temporal bone
Week 12
A pocket formed by the soft tissue of cheeks and gingiva

21. Oblique Fiber Group
Resists intrusive forces that try to push the tooth inwards
The tip of the chin
Resist rotational forces and hold teeth in inter-proximal contact
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

22. Maxillary Arch
A flap of tissue on the on the buccal mucosa
Small head - low nasal bridge - thin upper lip - small mandible
Upper arch of the teeth
An overgrowth of the gingival tissue

23. Interdental Septum
The slightly raised line extending down the middle of the hard palate
Hinge motion and gliding movement
A bony projection that separates each socket
Dentin found between the tubules

24. Endoderm
Respiratory system - digestive system and glandular organs
Middle two teeth in the mouth
The cornerstone of the mouth
Upper arch of the teeth

25. Deep Facial Veins
Mastication - aids in speech - influence facial structure - chewing surfaces
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Molaris meaning millstone
The gingiva in the floor of the gingival sulcus that attaches to the enamel

26. Function of Digastric
Radiates from the developmental groove
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Cells develop into different tissues
Lift the hyoid bone and assist in opening the mouth

27. Purpose of premolars
Hinge motion and gliding movement
Causes a thickening of the cementum around the apex
A dense tissue covered with mucous membrane that can withstand chewing
Used to pulverize food

28. Styloid Process
Surface away from the midline
Opening in the mouth below the orbit on the maxillary bone
Sharp projection on the under surface of the temporal bone
The ridges that run horizontally across the hard palate behind the incisive papilla

29. Lingual Veins
A line of demarcation between the attached gingiva and alveolar mucosa
Bluish veins that run the length of the tongue
Supplies blood to the face and oral cavity
Study of the structure and form of the teeth

30. Anterior Alveolar Nerve
Triferacated
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
A line of demarcation between the attached gingiva and alveolar mucosa
Supplies blood to the roots and periodontal ligaments of the molars and premolars

31. Inferior Nasal Conchae
The largest of three openings located in the posterior region of the hard palate
Scroll like bones outside the nasal cavaties
Forms into dentin - cementum and pulp of the teeth
20

32. Furcation
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
A line that represents the alveolus bone lining the socket
Dividing point of a multi-rooted tooth

33. Embryo
A line of demarcation between the attached gingiva and alveolar mucosa
Two weeks thru 8th week
Ligaments and muscles of mastication
Inside surface Which is towards the tongue - on anterior teeth

34. What is the most common problem with TMJ
Small curved lines that run parellel to the CEJ
Surface away from the midline
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
The disc becomes displaced

35. Alveolar Crest
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Extends from the medial corner of the eye to the nasal cavity
Two cortical bone plates that come together between each tooth
Two

36. Gland
Cluster of tissue that manufactures and secrets fluid
To dissolve
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
6 months/3years

37. Foliate Papillae
Cells develop into different tissues
Raised vertical folds of tissue on the lateral border of the tongue
Pulls the hyoid bone and the tongue anteriorly
Platysma - trapezius - sternocleidomastoid

38. Vermilion Border
Extends from the medial corner of the eye to the nasal cavity
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Portion of the lips where the skin meets the vermilion zone
Peg shaped crown with a smooth surface

39. Cleft Palate
The space between the unattached gingiva and the tooth
Canal or passage for fluid
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct

40. Maxillary vein
Enamel is thinner - pulp chamber is smaller -
Maxillary first molar
Drains the Pterygoid plexus of the veins
Creates the wall of the dentinal tubule

41. Gingival Hyperplasia
Disk that acts like a cushion between the temporal bone and the condyloid process
An overgrowth of the gingival tissue
Acts as anchors between the alveolar bone and the tooth
Middle line of the teeth

42. Agenesis
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Occurs in unusual ways and distorted crowns may appear
A line that represents the alveolus bone lining the socket
A bat shaped bone which forms the anterior portion of the skull

43. Neonatal line
Responsible for laying down the enamel matrix into place
Cheek bones--the most breakable bone in the body
Incremental line indicating trauma of birth
When the surface of the teeth becomes grooved

44. Mucogingival Junction
4 cusps/ bifurcated
A line of demarcation between the attached gingiva and alveolar mucosa
Where the ramus meets the body of the mandible on the outside border
When cells rapidly increase in number

45. How many cusps does the second bicuspid have?
Two
Wings of the sphenoid bone
When the surface of the teeth becomes grooved
Drains the superficial veins of the face and neck into the subclavian vein

46. Philtrum
Forms the remaining 2/3 of the hard and soft palate uvula
Secrete saliva to assist in process of digestion
Band of fibrous tissue which attaches bone to bone
A shallow v-shaped depression located below the bottom of the nose and above the lips

47. Maxillary Artery
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
A line of demarcation between the attached gingiva and alveolar mucosa
Largest of the branches of the external carotid artery; supplies facial structure
The slightly raised line extending down the middle of the hard palate

48. Lines of Retzius
Dividing point of a multi-rooted tooth
Opening in the mouth below the orbit on the maxillary bone
Incremental lines around the layers of the enamel matrix
Triferacated

49. What are the four major muscles of facial expression
Upper arch of the teeth
Orbicularis oris - buccinator - mentalis - zygomatic major
The inner surface of the lips
Opening for the ear

50. Imbrication lines
Allow flexibility during mastication - speech
Small yellowish glands on the labial mucosa
Teeth will not erupt in proper position
Slight ridges on the cervical third of certain teeth that extend mesiodistally