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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. Xygote
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Conception thru the first two weeks
When the tissue becomes inflamed
Small dark brushes

2. Gingival Groove
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Cells develop into different tissues
The line of demarcation between the attached gingiva and the marginal gingiva
A pocket formed by the soft tissue of cheeks and gingiva

3. Agenesis
Lower arch of the teeth
Occurs in unusual ways and distorted crowns may appear
Resists forces that try to pull the tooth outward
Permeante teeth replace the primary teeth

4. Lingual Veins
Bluish veins that run the length of the tongue
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Pointed or rounded mounds on the crown of the tooth
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface

5. Odontoblast
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Cells that form dentin
Resist rotational forces and hold teeth in inter-proximal contact
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars

6. How many cusps/ roots do the maxillary first molars have?
No bicuspids/ no 3rd molars
4/5 cusps/ 3 roots
Intervates the floor of the mouth the ventral side of the tongue taste buds on the anterior two thirds of the tongue and the lingual gingiva
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct

7. Secondary Dentin
Found near the cementoenamel junction
Cells that form cementum
Forms after the completion of the apical foramen
Dentin found between the tubules

8. Groove
Fleshy elevation under the tongue
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Small linear depression
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

9. Lacrimal Bones
Where the ramus meets the body of the mandible on the outside border
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Origin - fixed point - insertion - movable point
Band of fibrous tissue which attaches bone to bone

10. Styloid Process
Forming organ takes shape and resembles the shape of a bell
Sharp projection on the under surface of the temporal bone
Acts as anchors between the alveolar bone and the tooth
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

11. Incisive Arteries
Small yellowish glands on the labial mucosa
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Supplies blood to the roots and periodontal ligaments of the interior teeth

12. Interdental Septum
A horseshoe shaped groove that follow the curve of the dental arch
A bony projection that separates each socket
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Primary and permanent

13. External Carotid Artery
Elevated are of enamel that forms the Mesial and distal borders
Supplies blood to the face and oral cavity
Separates the developing oral cavities from the nasal cavities
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

14. Tome's process
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
A period of both primary teeth and permeant teeth are in the dentition
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Responsible for laying down the enamel matrix into place

15. Palatine Rugae
The largest of the salivary glands which lie just below and in front of the ear
The ridges that run horizontally across the hard palate behind the incisive papilla
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
Digstric - Mylohyoid - stylohyoid - geniohyoid

16. Incisive Papilla
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Formed by the uniting of lobes during development of crown
Surface towards the midline
Place where the groove comes together or fissures cross

17. Nasal-Labial Groove
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
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

18. Enamel Tufts
Small dark brushes
Depresses the tongue
To dissolve
Located behind the ramus of the mandible and branches into five arteries

19. Dental Sac
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
An enclosed area that matures into dentin - cementum and pulp
Follows the length of the body of the mandible past the last tooth and up to the ramus
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

20. Pterygoid plexus of the veins
A junction or center of veins that directly or indirectly drain a vast area
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Elevated are of enamel that forms the Mesial and distal borders
Pointed or rounded mounds on the crown of the tooth

21. Internal Oblique Ridge
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Cells develop into different tissues
Appears to be loosely attached - covering the alveolar bone.
Follows the inside of the ramus and the body of the mandible

22. Cervical line
Circle and tighten the gingival margin around the neck of the tooth
Assist in the movement and functioning of the tongue
Study of prenatal growth and the developing process of an individual
Divides the crown and the root

23. Lesser Palatine Nerve
Assists in elevating the chin
Forms a large cavity above the roots of the maxillary molars
Smaller branch that ennervates the soft palate uvula and tonsils
The largest of the salivary glands which lie just below and in front of the ear

24. Oblique Ridge
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Set of arches found farther in the back of the throat
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Found near the cementoenamel junction

25. Salivary Glands
Secrete saliva to assist in process of digestion
Hinge motion and gliding movement
Cluster of tissue that manufactures and secrets fluid
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

26. Function of Geniohyoid
Pulls the hyoid bone and the tongue anteriorly
Cut - tear - and grind food
Forms the bulk of the tooth
Aid in attaching the gingiva to the alveolar bone

27. Marginal Ridges
What divides the tongue in half and runs from the base to the tip of the tongue
Where the ramus meets the body of the mandible on the outside border
Retracts or depresses the tongue
Elevated are of enamel that forms the Mesial and distal borders

28. Morphology
Study of the structure and form of the teeth
Occurs in unusual ways and distorted crowns may appear
The largest of the salivary glands which lie just below and in front of the ear
Platysma - trapezius - sternocleidomastoid

29. Interdental Gingiva
The tip of the chin
An extension of an unattached gingiva and the tooth
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Narrow long enamel tuft

30. Pit
Demonstrates a disturbance in the body metabolism
Two
Supportive fibers that anchor the tooth to the bone
Place where the groove comes together or fissures cross

31. Apical Fiber Group
Resists forces that try to pull the tooth outward
Extends from the medial corner of the eye to the nasal cavity
Assist in the movement and functioning of the tongue
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface

32. Histo Differentiation
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Week 12
Cells develop into different tissues
Found only in multi-rooted teeth and resists rotational forces

33. Anterior Alveolar Nerve
9 weeks thru birth
The outer edge of the nostril
Growth from the oral epithelium that gives rise to the tooth buds
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors

34. Labial Commissures
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
The corners of the mouth where the top and bottom lip meet
4 cusps/ bifurcated
Separation of the upper lip ( 1 of 1000 live births)

35. Primary Dentin
Set of arches found farther in the back of the throat
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Forms the bulk of the tooth
Hinge motion and gliding movement

36. Pulpitis
When the tissue becomes inflamed
The groove below the lower lips that separates the lips from the chin
9 months (5 months ultrasound to tell sex)
Pulverizing or chewing surface

37. Inferior Nasal Conchae
Peg shaped crown with a smooth surface
Scroll like bones outside the nasal cavaties
Respiratory system - digestive system and glandular organs
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

38. Endoderm
Functions the same as the alveolar cfg; originate in alveolar bone
Genioglossus - hyoglossus - styloglossus - palatoglossus
Canal or passage for fluid
Respiratory system - digestive system and glandular organs

39. Ala of the Nose
Trigeminal - facial - glossopharyngeal - hypoglossal
The outer edge of the nostril
Resists forces that try to pull the tooth outward
Occlusal surface of the posterior tooth

40. Vestibule Fornix
The deepest point of the vestibule
Tubules that pass through the entire surface of the dentin
Compact bone plate of the facial and lingual surfaces
Greater - lesser - naso palatine nerves

41. Gingiva
Digstric - Mylohyoid - stylohyoid - geniohyoid
Lining covers inside of the oral cavity
Pointed elongations of the pulp
A dense tissue covered with mucous membrane that can withstand chewing

42. Mamelons
Bluish veins that run the length of the tongue
Composed of mucosa and surrounds the necks of the teeth
A flap of tissue on the on the buccal mucosa
Three bulges on the incisal edge

43. Tubercle of the Lip
A small projection in the middle of the upper lip
The area on the crown of the tooth that is nearest the gingival
Composed of mucosa and surrounds the necks of the teeth
Small dark brushes

44. Mylohyoid Artery
Branches off the inferior alveolar artery before intering the mandibular canal
Pulls the hyoid bone and the tongue anteriorly
Peg shaped crown with a smooth surface
Band of fibrous tissue which attaches bone to bone

45. Labial-Mental Groove
Greater - lesser - naso palatine nerves
Incremental lines around the layers of the enamel matrix
The groove below the lower lips that separates the lips from the chin
Place where the groove comes together or fissures cross

46. Deep Facial Veins
Middle line of the teeth
Supplies blood to the face and oral cavity
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
A junction or center of veins that directly or indirectly drain a vast area

47. Cementoblast
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Cells that form cementum
(free gingiva) surrounds the teeth
32

48. Landmarks
To lubricate the oral cavity and to moisten food
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
A condition where the lower frenum attachment is very short/DDS/frenectomy
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

49. What is origin and What is insertion?
The bone that separates the root on a tooth
Responsible for laying down the enamel matrix into place
Origin - fixed point - insertion - movable point
Function to resist rotational forces and tilting

50. If a patient receives toxic agents - how long does it take for their sense of taste to return?
An enclosed area that matures into dentin - cementum and pulp
Fleshy elevation under the tongue
Depresses the tongue
10 days