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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. Pulp horns
Pointed elongations of the pulp
The ridges that run horizontally across the hard palate behind the incisive papilla
Dividing point of a multi-rooted tooth
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

2. Interdental Ligament Group
Resist rotational forces and hold teeth in inter-proximal contact
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Supplies blood to the face and oral cavity
Cells that form dentin

3. Evanesce
Assist in the movement and functioning of the tongue
To dissolve
Oval structures that are located on the dorsal surface of the tongue
Incremental line indicating trauma of birth

4. Convects
Extends from the medial corner of the eye to the nasal cavity
Curve outward
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Covering over the enamel that is left over from the epithelium ameloblasts

5. Fibroblasts
Covering over the enamel that is left over from the epithelium ameloblasts
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Cells From which connective tissue evolve
Moves the head backward and laterally

6. Distal
Surface away from the midline
Supplies blood to the brain and the eyes
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
The internal surface at the center of the mandible

7. Cusp of Caribelli
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Portion of the lips that are red
Substances between cells
Teeth will not erupt in proper position

8. Apical Fiber Group
Resists forces that try to pull the tooth outward
Cut - tear - and grind food
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Two cortical bone plates that come together between each tooth

9. Imbrication lines
Third tooth from the midline
Drains the Pterygoid plexus of the veins
Slight ridges on the cervical third of certain teeth that extend mesiodistally
32

10. Pterygoid plexus of the veins
Greater - lesser - naso palatine nerves
A junction or center of veins that directly or indirectly drain a vast area
Cheek bones--the most breakable bone in the body
Cells that form dentin

11. Maxilla
Largest facial bone with two sections joined at the median suture
Layers of tooth tissue become calcified
Looking at the border of the tongue
The first predentin that is formed and matures within the tube

12. What are the 4 taste senses and where are they located?
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Forms after the completion of the apical foramen
An extension of an unattached gingiva and the tooth
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

13. Free Gingiva
Substances between cells
The portion of the tooth that meets the gingiva
Creates the wall of the dentinal tubule
Of or pertaining to area surrounding naval cavity

14. If a patient receives toxic agents - how long does it take for their sense of taste to return?
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
A horseshoe shaped bone lying at the base of the tongue--all the muscles of the tongue and the floor of the mouth attach to this bone
Forms the remaining 2/3 of the hard and soft palate uvula
10 days

15. How many cusps does the second bicuspid have?
Chewing and swallowing food
Bone that surrounds the root of the tooth
The teeth located at the back of the mouth
Two

16. What are the extrinsic muscles of the tongue responsible for?
The connective tissue of the marginal gingiva
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Assist in the movement and functioning of the tongue
Largest facial bone with two sections joined at the median suture

17. Mucogingival Junction
A line of demarcation between the attached gingiva and alveolar mucosa
Third tooth from the midline
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids

18. Mental Protuberance
The tip of the chin
The space between the unattached gingiva and the tooth
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Tooth emerges from gum tissue and becomes visible

19. Dentogingival Fiber Groups
6 months/3years
Found only in multi-rooted teeth and resists rotational forces
Linear elevation of the tooth
Act to maintain the gingival integrity of the marginal gingiva

20. Lingual Vein
The largest of three openings located in the posterior region of the hard palate
Drains the floor of the mouth
A triangular area located behind the last molar
Retracts or depresses the tongue

21. Median Sulcus
The slightly raised line extending down the middle of the hard palate
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
Mastication - aids in speech - influence facial structure - chewing surfaces
What divides the tongue in half and runs from the base to the tip of the tongue

22. Greater Palatine Nerve
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
6 years old
Two cortical bone plates that come together between each tooth
Platysma - trapezius - sternocleidomastoid

23. Tubercle of the Lip
Raised vertical folds of tissue on the lateral border of the tongue
Study of the structure and form of the teeth
A small projection in the middle of the upper lip
A triangular area located behind the last molar

24. Sublingual Caruncles
Place where the groove comes together or fissures cross
2 small raised folds of tissue where the lingual frenum attaches
Two cortical bone plates that come together between each tooth
The space between the unattached gingiva and the tooth

25. Cusps
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
20
Pointed or rounded mounds on the crown of the tooth
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

26. Common Carotid
Primitive mouth
Shed from the oral cavity
Arteries supplying blood to most of the head and the neck
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

27. Buccal
Outside surface Which is towards the cheek - on posterior teeth
Inside surface Which is towards the tongue - on anterior teeth
Smaller branch that ennervates the soft palate uvula and tonsils
The moveable attachment of the muscle

28. Lingual Nerve Branch
Canal or passage for fluid
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
1500 millimeters
A bat shaped bone which forms the anterior portion of the skull

29. Mesoderm
Primitive mouth
The corners of the mouth where the top and bottom lip meet
Forms after the completion of the apical foramen
Forms into dentin - cementum and pulp of the teeth

30. Calcification
Bicuspids
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Molars
Layers of tooth tissue become calcified

31. Uvula
Canal or passage for fluid
Origin - fixed point - insertion - movable point
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
A projection that extends off the back of the soft palate

32. Incisive Nerve branch
Intervating the anterior teeth and the labial gingiva
Draws down the mandible and corners of the mouth
1500 millimeters
Surface away from the midline

33. Mamelons
Forms into dentin - cementum and pulp of the teeth
Three bulges on the incisal edge
Platysma - trapezius - sternocleidomastoid
Inside surface Which is towards the tongue - on anterior teeth

34. Circumvallate Papillae
An enclosed area that matures into dentin - cementum and pulp
Week 12
Cells that form cementum
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

35. What is Ankyloglossia and who can treat it / What is the treatment called?
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
The layer of dentin that surrounds the pulp
Pulls the hyoid bone and the tongue anteriorly
A condition where the lower frenum attachment is very short/DDS/frenectomy

36. Attrition
When the surface of the teeth becomes grooved
Cells that form dentin
Inner portion of the enamel rod
Wearing away of the incisal or occlusal surfaces of the tooth

37. Triangular Ridge
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Fleshy elevation under the tongue
Divides the crown and the root

38. How is the TMJ supported and what controls their movement?
Ligaments and muscles of mastication
Scroll like bones outside the nasal cavaties
Inside of the maxillary teeth
Trigeminal nerve--because it ennervates the maxilla and the mandible

39. Lobes
Circle and tighten the gingival margin around the neck of the tooth
Allow flexibility during mastication - speech
Responsible for laying down the enamel matrix into place
Developmental segment of a tooth

40. Inferior Alveolar Artery
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 dentin
Maxillary third molar
Two cortical bone plates that come together between each tooth

41. What are the two muscles of the soft palate?
Inner portion of the enamel rod
Permeante teeth replace the primary teeth
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Palatoglossus - palatopharyngeal

42. Function of mylohyoid
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
The slightly raised line extending down the middle of the hard palate
Assist in depressing the mandible and elevating the tongue

43. Filiform Papillae
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Formed by the fibroblast cells and secures the tooth in the socket
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

44. What is the most common problem with TMJ
Shed from the oral cavity
Quarters of the teeth
The disc becomes displaced
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

45. How many teeth are in the Primary teeth?
20
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Formed by the uniting of lobes during development of crown
Dividing point of a multi-rooted tooth

46. When do oral and nasal cavity separate and palate develop?
Cut - tear - and grind food
The slightly raised line extending down the middle of the hard palate
Week 12
Hinge motion and gliding movement

47. External Oblique Ridge
Lift the hyoid bone and assist in opening the mouth
Follows the length of the body of the mandible past the last tooth and up to the ramus
Enamel forming cells
Maxillary third molar

48. Dentinal Hypersensitivity
Small linear depression
When the dentin is exposed
Enamel is thinner - pulp chamber is smaller -
Occlusal surface of the posterior tooth

49. Alveolus
Second teeth next to central incisors
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Bone that surrounds the root of the tooth
Study of prenatal growth and the developing process of an individual

50. Periodontal Ligaments
Cells that form cementum
Formed by the fibroblast cells and secures the tooth in the socket
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Bony projection found on the bottom border of the temporal bone