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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.
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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. Function of Hyoglossus
Maxillary third molar
Creates the wall of the dentinal tubule
Healthy gingival tissue with an orange texture
Depresses the tongue

2. Tendon
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Tooth emerges from gum tissue and becomes visible
Band of fibrous tissue which attaches muscle to bone
Mildest form of cleft palate

3. Infraorbital Foramen
The teeth located at the back of the mouth
A horseshoe shaped groove that follow the curve of the dental arch
Origin of the tooth
Opening in the mouth below the orbit on the maxillary bone

4. Embrasure
Triangular space in the gingival direction when two adjacent teeth are in contact
Elevated are of enamel that forms the Mesial and distal borders
Two vertical extensions of the mandible
Drains the facial structures beginning near the eye and descending toward the mandible

5. Anatomical root
Retracts the tongue and raises the tip of the tongue
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Portion covered with cementum

6. Mental Nerve Branch
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Largest division of the trigeminal nerve
Maxillary third molar

7. Horizontal Fiber Group
Functions the same as the alveolar cfg; originate in alveolar bone
Trigeminal - facial - glossopharyngeal - hypoglossal
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Three cusps/ trifurcated

8. Rod Core
Inner portion of the enamel rod
Mucosa that covers the alveolar bone
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Mastication - aids in speech - influence facial structure - chewing surfaces

9. Attrition
Responsible for laying down the enamel matrix into place
Wearing away of the incisal or occlusal surfaces of the tooth
Retracts the tongue and raises the tip of the tongue
Study of the structure and form of the teeth

10. What is the latin word for molar?
Molaris meaning millstone
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Resists intrusive forces that try to push the tooth inwards

11. Mastoid process
Wings of the sphenoid bone
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Bony projection found on the bottom border of the temporal bone
Palatoglossus - palatopharyngeal

12. Which molar contains the cusp of Caribelli?
Inner portion of the enamel rod
Maxillary first molar
Cells that form dentin
Papillae that give the tongue the strawberry effect

13. Incisive Arteries
Digstric - Mylohyoid - stylohyoid - geniohyoid
Trigeminal - facial - glossopharyngeal - hypoglossal
Duct located on the parotid papilla
Supplies blood to the roots and periodontal ligaments of the interior teeth

14. Where is the palate located?
Supplies blood to the brain and the eyes
Inside of the maxillary teeth
Small linear depression
Platysma - trapezius - sternocleidomastoid

15. Cleft Lip
Separation of the upper lip ( 1 of 1000 live births)
Pulls the hyoid bone and the tongue anteriorly
Conception thru the first two weeks
An overgrowth of the gingival tissue

16. Histology
Assist in the movement and functioning of the tongue
The study of the microscopic structure and functions of tissues
Permeante teeth replace the primary teeth
Retracts or depresses the tongue

17. Lateral Incisor
Smaller branch that ennervates the soft palate uvula and tonsils
Primitive mouth
An enclosed area that matures into dentin - cementum and pulp
Second teeth next to central incisors

18. Muscle origine
The fixed attachment of a muscle
Portion of the lips that are red
Healthy gingival tissue with an orange texture
Molars

19. Gingiva
A dense tissue covered with mucous membrane that can withstand chewing
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Three cusps/ trifurcated
Function to resist rotational forces and tilting

20. Histo Differentiation
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
Lower arch of the teeth
Cells develop into different tissues
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar

21. Enamel Spindle
Separates the developing oral cavities from the nasal cavities
Short tubules that seem to crossover to the enamel
Conception thru the first two weeks
Aid in attaching the gingiva to the alveolar bone

22. Incisal third
Largest of the branches of the external carotid artery; supplies facial structure
Scroll like bones outside the nasal cavaties
Mandibular central incisors
The crown of the tooth that is nearest the incisal edge near the anterior tooth

23. How many cusps/ roots do the 2/3rd mandibular molars have?
4 cusps/ bifurcated
Divides the crown and the root
Small raised projections where taste buds are located
Supplies blood to the face and oral cavity

24. Buccal Mucosa
Developmental segment of a tooth
The inner surface of the cheeks
Small head - low nasal bridge - thin upper lip - small mandible
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

25. What are the 4 cranial nerves that ennervate the face and oral cavity
A line of tissue that extends from the tongue to the floor of the mouth
Shed from the oral cavity
Trigeminal - facial - glossopharyngeal - hypoglossal
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

26. Incisal Edge
Bi-cuspids
Forms the remaining 2/3 of the hard and soft palate uvula
Covering over the enamel that is left over from the epithelium ameloblasts
Biting edge of the teeth

27. Xygomatic bones
Cheek bones--the most breakable bone in the body
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Pulverizing or chewing surface
10 days

28. Contact Area
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
The line of demarcation between the attached gingiva and the marginal gingiva
Where the proximal sides of two teeth come together and touch
Resists intrusive forces that try to push the tooth inwards

29. Odontogenesis
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Primitive mouth
Origin of the tooth
Located behind the ramus of the mandible and branches into five arteries

30. Sublingual Sulcus
Initiation of the tooth begins
Respiratory system - digestive system and glandular organs
Pulls the hyoid bone and the tongue anteriorly
A horseshoe shaped groove that follow the curve of the dental arch

31. Internal Jugular Vein
A junction or center of veins that directly or indirectly drain a vast area
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
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
4 cusps/ bifurcated

32. How can you tell if someone has cancer by looking at the tongue?
A horseshoe shaped groove that follow the curve of the dental arch
Looking at the border of the tongue
Two cortical bone plates that come together between each tooth
Two vertical extensions of the mandible

33. Circumpulpal Dentin
Fifth cusp located on the mesial surface lingual surface of maxillary first molars
Arteries supplying blood to most of the head and the neck
The layer of dentin that surrounds the pulp
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

34. Genial Tubercles
Small bony projections surrounding the lingual foramen
Middle two teeth in the mouth
Branches off the inferior alveolar artery before intering the mandibular canal
A rounded area beyond the last posterior maxillary tooth

35. How many roots/ cusps does the mandibular first molar have?
The fixed attachment of a muscle
Shaping the tongue during speech - mastication and swallowing
Wearing away of the incisal or occlusal surfaces of the tooth
Bifurcated/ 5 cusps

36. Mandibular Foramen
Triferacated
Located on the inside of the body of the ramus
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
Small dark brushes

37. Circumvallate Papillae
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
The moveable attachment of the muscle
The layer of dentin that surrounds the pulp
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

38. Oblique Ridge
The connective tissue of the marginal gingiva
Primitive mouth
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Buccal - lingual - and inferior alveolar

39. Function of Trapezius
Moves the head backward and laterally
The layer of dentin that surrounds the pulp
Act to maintain the gingival integrity of the marginal gingiva
Dentin found between the tubules

40. Frenum
A horseshoe shaped groove that follow the curve of the dental arch
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Extends from the mucogingival junction to the gingival groove
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

41. Common Carotid
Calcium salts are deposited into formed tooth
Arteries supplying blood to most of the head and the neck
Set of arches found farther in the back of the throat
Cut - tear - and grind food

42. Saliva
Acts as anchors between the alveolar bone and the tooth
Formed by the fibroblast cells and secures the tooth in the socket
Clear fluid secreted by the salivary and mucous glands throughout the mouth
The line of demarcation between the attached gingiva and the marginal gingiva

43. Philtrum
Forming organ takes shape and resembles the shape of a bell
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
The study of the microscopic structure and functions of tissues
Vertical groove on the midline of the upper lip

44. What is the maxillary cuspid known as?
Buccal - lingual - and inferior alveolar
Draws the hyoid bone superiorly and posteriorly and stabilizes it
The cornerstone of the mouth
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins

45. Anterior Tonsillar Pillar
Elevated are of enamel that forms the Mesial and distal borders
Function to resist rotational forces and tilting
Third tooth from the midline
Folds of tissue that extend horizontally from the uvula to the base of the tongue

46. Cervical Third
Three bulges on the incisal edge
Functions the same as the alveolar cfg; originate in alveolar bone
The area on the crown of the tooth that is nearest the gingival
Used to pulverize food

47. Fossa
Opening in the mouth below the orbit on the maxillary bone
Rounded depression on a tooth
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Occlusal surface of the posterior tooth

48. Zygomatic nerve
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
The connective tissue of the marginal gingiva
Wings of the sphenoid bone
Two cortical bone plates that come together between each tooth

49. Dental Lamina
Extends from the medial corner of the eye to the nasal cavity
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
Excess bone in the middle of the palate
Growth from the oral epithelium that gives rise to the tooth buds

50. Labial-Mental Groove
The groove below the lower lips that separates the lips from the chin
Lift the hyoid bone and assist in opening the mouth
Small curved lines that run parellel to the CEJ
Cells develop into different tissues