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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. Torus
Excess bone in the middle of the palate
Second teeth next to central incisors
Formed by the fibroblast cells and secures the tooth in the socket
Divides the crown and the root

2. Papilla
Interdental ligament
No bicuspids/ no 3rd molars
Small raised projections where taste buds are located
Week 12

3. Labial Commissures
Sharp projection on the under surface of the temporal bone
Small dark brushes
Corners of the mouth
Found only in multi-rooted teeth and resists rotational forces

4. When do the primary teeth begin erupting and are fully erupted?
Cut - tear - and grind food
Separates the developing oral cavities from the nasal cavities
Small raised projections where taste buds are located
6 months/3years

5. Lateral Incisor
Formed by the uniting of lobes during development of crown
Second teeth next to central incisors
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Retracts the tongue and raises the tip of the tongue

6. Glenoid Fossa
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Functions the same as the alveolar cfg; originate in alveolar bone
Oval depression of temporal bone in condyloid process
Portion covered with cementum

7. What is the maxillary cuspid known as?
2 to 3 pints
The cornerstone of the mouth
Supplies blood to the face and oral cavity
Conception thru the first two weeks

8. Groove
Outside surface Which is towards the lips
Small linear depression
Rounded depression on a tooth
Forms after the completion of the apical foramen

9. What are the 4 taste senses and where are they located?
Origin - fixed point - insertion - movable point
Ligaments and muscles of mastication
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Tissue fluid surrounding the cell membrane of the odontoblast

10. Muscle Insertion
The moveable attachment of the muscle
Tubules that pass through the entire surface of the dentin
Chewing and swallowing food
Peg shaped crown with a smooth surface

11. Function of Geneoglossus?
Retracts or depresses the tongue
Inside of the maxillary teeth
Papillae that give the tongue the strawberry effect
Incremental line indicating trauma of birth

12. How much saliva is produced daily?
Incremental lines around the layers of the enamel matrix
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
1500 millimeters
Greater - lesser - naso palatine nerves

13. Cuspid
10 days
Trigeminal nerve--because it ennervates the maxilla and the mandible
The first predentin that is formed and matures within the tube
Third tooth from the midline

14. What is the smallest tooth in dentition?
Mandibular central incisors
Teeth after cuspids
Biting edge of the teeth
Chewing and swallowing food

15. Function of Palatopharyngeal
Shaping the tongue during speech - mastication and swallowing
Constricts the nasopharyngeal passage and elevates the larynx
Mandibular central incisors
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch

16. Symphysis
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Linear elevation of the tooth
Greater - lesser - naso palatine nerves
Formed by the uniting of lobes during development of crown

17. Where is the palate located?
Mastication - aids in speech - influence facial structure - chewing surfaces
Used to pulverize food
Inside of the maxillary teeth
Molaris meaning millstone

18. Landmarks
Trigeminal nerve--because it ennervates the maxilla and the mandible
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Divides the crown and the root
Assists in elevating the chin

19. What is the function of the buccle nerve branch?
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
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
Stained growth rings in dentin
A flap of tissue on the on the buccal mucosa

20. Rami
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Causes a thickening of the cementum around the apex
Two vertical extensions of the mandible
Moves the head backward and laterally

21. Marginal GIngiva
(free gingiva) surrounds the teeth
Found only in multi-rooted teeth and resists rotational forces
Occlusal surface of the posterior tooth
To dissolve

22. What are the 3 branches of the mandibular nerve branch?
The inner surface of the lips
Occurs in unusual ways and distorted crowns may appear
Buccal - lingual - and inferior alveolar
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct

23. Gingival Sulcus
Digstric - Mylohyoid - stylohyoid - geniohyoid
The space between the unattached gingiva and the tooth
No bicuspids/ no 3rd molars
When cells rapidly increase in number

24. Buccal Mucosa
The inner surface of the cheeks
Elevated are of enamel that forms the Mesial and distal borders
H20 - mucin - organic salts and digestive enzymes
Duct located on the parotid papilla

25. Mamelons
Platysma - trapezius - sternocleidomastoid
Three bulges on the incisal edge
Origin of the tooth
Covers muscle tissue in the posterior portion of the palate

26. Lingual Nerve Branch
Natural teeth in position
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
The crown of the tooth that is nearest the incisal edge near the anterior tooth
The development of different forms

27. Pterygoid Process
The ridges that run horizontally across the hard palate behind the incisive papilla
32
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Wings of the sphenoid bone

28. What are the 4 extrinsic muscles of the tongue
Portion of the root seen in the oral cavity
Genioglossus - hyoglossus - styloglossus - palatoglossus
Set of arches found farther in the back of the throat
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

29. Stenson's Duct
Duct located on the parotid papilla
Assist in the movement and functioning of the tongue
Smaller branch that ennervates the soft palate uvula and tonsils
Intervating the anterior teeth and the labial gingiva

30. Periodontal Ligaments
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Bi-cuspids
Formed by the fibroblast cells and secures the tooth in the socket
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

31. Hyoid Bone
The inner surface of the cheeks
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
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
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

32. What are the two muscles of the soft palate?
Small raised projections where taste buds are located
Retracts or depresses the tongue
Resists forces that try to pull the tooth outward
Palatoglossus - palatopharyngeal

33. What are the extrinsic muscles of the tongue responsible for?
Origin of the tooth
Assist in the movement and functioning of the tongue
Supplies blood to the roots and periodontal ligaments of the interior teeth
The gingiva in the floor of the gingival sulcus that attaches to the enamel

34. What are the four main functions of deciduous teeth?
Set of arches found farther in the back of the throat
Mastication - aids in speech - influence facial structure - chewing surfaces
Bicuspids
Enamel forming cells

35. Imbrication lines
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Bony projection found on the bottom border of the temporal bone
Assists in elevating the chin
Anterior to the ethmoid bone and part of the orbit (corners of the eye)

36. Pulp Stones
Place where the groove comes together or fissures cross
Largest facial bone with two sections joined at the median suture
No bicuspids/ no 3rd molars
Calcified masses of dentin

37. Submandibular Glands

38. Circular Ligament Fiber Groups
Oval depression of temporal bone in condyloid process
A projection that extends off the back of the soft palate
A small projection in the middle of the upper lip
Circle and tighten the gingival margin around the neck of the tooth

39. Buccal
Outside surface Which is towards the cheek - on posterior teeth
Retracts the tongue and raises the tip of the tongue
Extends from the medial corner of the eye to the nasal cavity
Disk that acts like a cushion between the temporal bone and the condyloid process

40. Lingual Frenum
A line of tissue that extends from the tongue to the floor of the mouth
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Forms the remaining 2/3 of the hard and soft palate uvula
Small yellowish glands on the labial mucosa

41. Nasolacrimal groove
Band of fibrous tissue which attaches muscle to bone
Extends from the medial corner of the eye to the nasal cavity
The development of different tissues
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

42. Mental Nerve Branch
Largest division of the trigeminal nerve
Synovial fluid
Disk that acts like a cushion between the temporal bone and the condyloid process
Resists intrusive forces that try to push the tooth inwards

43. What are the 4 cranial nerves that ennervate the face and oral cavity
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Week 11
Trigeminal - facial - glossopharyngeal - hypoglossal

44. Facial Artery
Inside of the maxillary teeth
Lining covers inside of the oral cavity
Contains six branches that supply blood to the pharynx muscles - soft palate tonsils - the posterior of the tongue - sub mandibular gland - muscles of the face - nasal septom - nose and the eyelids
Cheek bones--the most breakable bone in the body

45. Filiform Papillae
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface

46. Fossa
Covers muscle tissue in the posterior portion of the palate
Resists forces that try to pull the tooth outward
Rounded depression on a tooth
Occlusal surface of the posterior tooth

47. Alveolar Mucosa
Appears to be loosely attached - covering the alveolar bone.
Resist rotational forces and hold teeth in inter-proximal contact
Opening in the mouth below the orbit on the maxillary bone
An enclosed area that matures into dentin - cementum and pulp

48. Ameloblast
Enamel forming cells
Appears to be loosely attached - covering the alveolar bone.
Middle two teeth in the mouth
Three cusps/ trifurcated

49. Furcation
Opening for the ear
Dividing point of a multi-rooted tooth
When the dentin is exposed
The moveable attachment of the muscle

50. Neonatal line
The connective tissue of the marginal gingiva
Triangular space in the gingival direction when two adjacent teeth are in contact
Growth from the oral epithelium that gives rise to the tooth buds
Incremental line indicating trauma of birth