Test your basic knowledge |

Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
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. Ligament
Band of fibrous tissue which attaches bone to bone
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Pulls the hyoid bone and the tongue anteriorly
Conception thru the first two weeks

2. Naso Palatine Nerve
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Lower arch of the teeth
Supportive fibers that anchor the tooth to the bone
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

3. Dental Arteries
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Drains the superficial veins of the face and neck into the subclavian vein
Separation of the upper lip ( 1 of 1000 live births)
Supplies blood to the roots and periodontal ligaments of the molars and premolars

4. Lines of Retzius
Excess bone in the middle of the palate
Incremental lines around the layers of the enamel matrix
A faint line going from the ala of the nose to the corner of the mouth
The outer edge of the nostril

5. When do the primary teeth begin erupting and are fully erupted?
6 months/3years
Bony projection found on the bottom border of the temporal bone
A condition where the lower frenum attachment is very short/DDS/frenectomy
Origin - fixed point - insertion - movable point

6. Lingual
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Bony projection found on the bottom border of the temporal bone
Drains the superficial veins of the face and neck into the subclavian vein
Inside surface Which is towards the tongue - on anterior teeth

7. Denticion
Natural teeth in position
Short tubules that seem to crossover to the enamel
Cheek bones--the most breakable bone in the body
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

8. Function of Styloglossus
Formed by the fibroblast cells and secures the tooth in the socket
Respiratory system - digestive system and glandular organs
Molars
Retracts the tongue and raises the tip of the tongue

9. External Jugular Vein
Bone that surrounds the root of the tooth
Small grooves noted on some teeth
Drains the superficial veins of the face and neck into the subclavian vein
The mandibular molars

10. Facial development
Molars
4th week
Rounded depression on a tooth
1500 millimeters

11. What is the longest tooth in the mandibular arch?
Function to resist rotational forces and tilting
Small curved lines that run parellel to the CEJ
Drains the Pterygoid plexus of the veins
The mandibular first premolar

12. Palatine Rugae
The deepest point of the vestibule
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Small head - low nasal bridge - thin upper lip - small mandible
The ridges that run horizontally across the hard palate behind the incisive papilla

13. Mylohyoid Nerve Branch
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Week 11
Cells that form dentin
Band of fibrous tissue which attaches muscle to bone

14. Labial Mucosa
The connective tissue of the marginal gingiva
A period of both primary teeth and permeant teeth are in the dentition
The inner surface of the lips
The largest of three openings located in the posterior region of the hard palate

15. What are the three muscles of the neck?
Platysma - trapezius - sternocleidomastoid
Outside surface Which is towards the lips
Trigeminal - facial - glossopharyngeal - hypoglossal
A pocket formed by the soft tissue of cheeks and gingiva

16. What are the 3 branches of the pterygopalatine nerve branch?
Greater - lesser - naso palatine nerves
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Maxillary first molar
Pulls the hyoid bone and the tongue anteriorly

17. Mandibular Foramen
Divides the crown and the root
Located on the inside of the body of the ramus
The development of different tissues
Separation of the upper lip ( 1 of 1000 live births)

18. Purpose of premolars
Largest facial bone with two sections joined at the median suture
Used to pulverize food
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Digstric - Mylohyoid - stylohyoid - geniohyoid

19. Xygote
Largest of the branches of the external carotid artery; supplies facial structure
The slightly raised line extending down the middle of the hard palate
The gingiva in the floor of the gingival sulcus that attaches to the enamel
When cells rapidly increase in number

20. Tendon
Acts as anchors between the alveolar bone and the tooth
Drains the facial structures beginning near the eye and descending toward the mandible
Band of fibrous tissue which attaches muscle to bone
The largest of the salivary glands which lie just below and in front of the ear

21. Interdental Gingiva
An extension of an unattached gingiva and the tooth
Two weeks thru 8th week
A line of demarcation between the attached gingiva and alveolar mucosa
Oval structures that are located on the dorsal surface of the tongue

22. Internal Oblique Ridge
Vertical groove on the midline of the upper lip
Follows the inside of the ramus and the body of the mandible
Bi-cuspids
Two weeks thru 8th week

23. Supplemental Groove
Radiates from the developmental groove
Forms into dentin - cementum and pulp of the teeth
The tip of the chin
An overgrowth of the gingival tissue

24. Muscle Insertion
To bulge of curve outward
The moveable attachment of the muscle
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Draws the hyoid bone superiorly and posteriorly and stabilizes it

25. Buccal
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
The corners of the mouth where the top and bottom lip meet
Occlusal surface of the posterior tooth
Outside surface Which is towards the cheek - on posterior teeth

26. Cleft Palate
A junction or center of veins that directly or indirectly drain a vast area
Pulverizing or chewing surface
Intervating the anterior teeth and the labial gingiva
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

27. Fibroblasts
Causes a thickening of the cementum around the apex
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Surface towards the midline
Cells From which connective tissue evolve

28. Dentinal Tubules
Tubules that pass through the entire surface of the dentin
Small curved lines that run parellel to the CEJ
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

29. Gingival Groove
Curve outward
4/5 cusps/ 3 roots
Duct located on the parotid papilla
The line of demarcation between the attached gingiva and the marginal gingiva

30. Morpho Differentiation
Extreme variations from the norm
Tissue fluid surrounding the cell membrane of the odontoblast
The largest of three openings located in the posterior region of the hard palate
Forming organ takes shape and resembles the shape of a bell

31. Incisive Arteries
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Supplies blood to the roots and periodontal ligaments of the interior teeth
Found near the cementoenamel junction
Growth from the oral epithelium that gives rise to the tooth buds

32. Interradicular Septum
Lift the hyoid bone and assist in opening the mouth
The bone that separates the root on a tooth
Buccal - lingual - and inferior alveolar
Looking at the border of the tongue

33. Cementoblast
Folds of tissue to the the lingual veins
Forms after the completion of the apical foramen
Healthy gingival tissue with an orange texture
Cells that form cementum

34. Deep Facial Veins
Biting edge of the teeth
Forms into dentin - cementum and pulp of the teeth
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Primary embryonic mesoderm layer that develops during the morpho differentiation period

35. Mantle Dentin
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Depresses the tongue
When cells rapidly increase in number
The first predentin that is formed and matures within the tube

36. Alveolar Crest
Two cortical bone plates that come together between each tooth
Supplies blood to the roots and periodontal ligaments of the interior teeth
A horseshoe shaped groove that follow the curve of the dental arch
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip

37. Ameloblast
The development of different tissues
Enamel forming cells
Demonstrates a disturbance in the body metabolism
Indented

38. What are the extrinsic muscles of the tongue responsible for?
To bulge of curve outward
Pulverizing or chewing surface
Primitive mouth
Assist in the movement and functioning of the tongue

39. Articular Disc
Molars
Small yellowish glands on the labial mucosa
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Cells that form dentin

40. Mental Nerve Branch
Largest division of the trigeminal nerve
Mastication - aids in speech - influence facial structure - chewing surfaces
The fixed attachment of a muscle
A condition where the lower frenum attachment is very short/DDS/frenectomy

41. Gums
Used to pulverize food
6 months/3years
Rounded depression on a tooth
Tissue covering the alveolar processes

42. Function of Platysma
Growth from the oral epithelium that gives rise to the tooth buds
Draws down the mandible and corners of the mouth
Excess dryness of the mouth
When the surface of the teeth becomes grooved

43. Styloid Process
Convex area on the lingual surface near gingiva
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Week 12
Sharp projection on the under surface of the temporal bone

44. Interdental Septum
Pulverizing or chewing surface
Trigeminal nerve--because it ennervates the maxilla and the mandible
A bony projection that separates each socket
Depresses the tongue

45. Intertubular Dentin
Dentin found between the tubules
Middle line of the teeth
Inside surface Which is towards the tongue - on anterior teeth
The inner surface of the cheeks

46. Incisal third
Forming organ takes shape and resembles the shape of a bell
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Permeante teeth replace the primary teeth
Largest facial bone with two sections joined at the median suture

47. Circumpulpal Dentin
Small raised projections where taste buds are located
Origin - fixed point - insertion - movable point
The layer of dentin that surrounds the pulp
Functions the same as the alveolar cfg; originate in alveolar bone

48. Parotid Papilla
The first predentin that is formed and matures within the tube
Study of the structure and form of the teeth
Portion of the lips that are red
A flap of tissue on the on the buccal mucosa

49. What is the largest cranial nerve and the most important to dental auxillaries and why?
An extension of an unattached gingiva and the tooth
Genioglossus - hyoglossus - styloglossus - palatoglossus
Trigeminal nerve--because it ennervates the maxilla and the mandible
Portion of the lips that are red

50. Function of Digastric
Causes a thickening of the cementum around the apex
The cornerstone of the mouth
Lift the hyoid bone and assist in opening the mouth
Resulting from an imperfect union where the lobes come together