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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. Labial-Mental Groove
Largest division of the trigeminal nerve
The groove below the lower lips that separates the lips from the chin
Tooth emerges from gum tissue and becomes visible
Palatoglossus - palatopharyngeal

2. Tome's process
Appears to be loosely attached - covering the alveolar bone.
Cells From which connective tissue evolve
Responsible for laying down the enamel matrix into place
Platysma - trapezius - sternocleidomastoid

3. Gums
Tissue covering the alveolar processes
When the tissue becomes inflamed
Located on the inside of the body of the ramus
Covering over the enamel that is left over from the epithelium ameloblasts

4. If a patient receives toxic agents - how long does it take for their sense of taste to return?
10 days
Cut - tear - and grind food
Second teeth next to central incisors
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

5. Periodontal Ligaments
Primary embryonic mesoderm layer that develops during the morpho differentiation period
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
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Formed by the fibroblast cells and secures the tooth in the socket

6. Fimbriated Folds
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Opening for the ear
Folds of tissue to the the lingual veins
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

7. Lingual Vein
Drains the floor of the mouth
Retracts or depresses the tongue
Dentin found between the tubules
A projection that extends off the back of the soft palate

8. Palatine Bones
Secrete saliva to assist in process of digestion
Joined at the midline and are often referred to as the median Palatine suture
A horseshoe shaped groove that follow the curve of the dental arch
Sharp projection on the under surface of the temporal bone

9. How many cusps does the second bicuspid have?
Two
A line of tissue that extends from the tongue to the floor of the mouth
Full deep rich sound in nasal cavity
Study of prenatal growth and the developing process of an individual

10. What is saliva made of?
Circle and tighten the gingival margin around the neck of the tooth
Cells develop into different tissues
H20 - mucin - organic salts and digestive enzymes
Platysma - trapezius - sternocleidomastoid

11. Sublingual Glands
Small curved lines that run parellel to the CEJ
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
Aid in attaching the gingiva to the alveolar bone
Drains the facial structures beginning near the eye and descending toward the mandible

12. Interdental Septum
A bony projection that separates each socket
Wings of the sphenoid bone
The line of demarcation between the attached gingiva and the marginal gingiva
Genioglossus - hyoglossus - styloglossus - palatoglossus

13. Dentogingival Fiber Groups
Small grooves noted on some teeth
Forms a large cavity above the roots of the maxillary molars
Act to maintain the gingival integrity of the marginal gingiva
Enamel is thinner - pulp chamber is smaller -

14. Pulp Stones
Calcified masses of dentin
Layers of tooth tissue become calcified
A horseshoe shaped groove that follow the curve of the dental arch
Slight ridges on the cervical third of certain teeth that extend mesiodistally

15. What is the longest tooth in the mandibular arch?
The mandibular first premolar
Small bony projections surrounding the lingual foramen
Molaris meaning millstone
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

16. Rod Core
Inner portion of the enamel rod
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Chewing and swallowing food
Layers of tooth tissue become calcified

17. When do oral and nasal cavity separate and palate develop?
Elevated are of enamel that forms the Mesial and distal borders
Canal or passage for fluid
Circle and tighten the gingival margin around the neck of the tooth
Week 12

18. Groove
Triferacated
Pointed elongations of the pulp
Healthy gingival tissue with an orange texture
Small linear depression

19. How many cusps/ roots do the 2/3rd mandibular molars have?
Largest of the branches of the external carotid artery; supplies facial structure
4 cusps/ bifurcated
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Of or pertaining to area surrounding naval cavity

20. Anatomical root
The portion of the tooth that meets the gingiva
Small grooves noted on some teeth
Portion covered with cementum
Covers muscle tissue in the posterior portion of the palate

21. Lingual 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
4 cusps/ bifurcated
Forms into dentin - cementum and pulp of the teeth
Radiates from the developmental groove

22. External Carotid Artery
Supplies blood to the face and oral cavity
Wings of the sphenoid bone
Primitive mouth
(free gingiva) surrounds the teeth

23. Contact Area
Cells that form dentin
Circle and tighten the gingival margin around the neck of the tooth
Where the proximal sides of two teeth come together and touch
Molaris meaning millstone

24. Palatine Rugae
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Functions the same as the alveolar cfg; originate in alveolar bone
The ridges that run horizontally across the hard palate behind the incisive papilla
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch

25. What are the 4 pairs of muscles of mastication!
Small raised projections where taste buds are located
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Forms the remaining 2/3 of the hard and soft palate uvula
Chewing and swallowing food

26. Primary Dentin
Largest facial bone with two sections joined at the median suture
Forms the bulk of the tooth
Natural teeth in position
Retracts or depresses the tongue

27. Gingiva
A dense tissue covered with mucous membrane that can withstand chewing
Located on the inside of the body of the ramus
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
1500 millimeters

28. Cortical Bone
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Palatoglossus - palatopharyngeal
Compact bone plate of the facial and lingual surfaces

29. Function of Palatopharyngeal
Aid in attaching the gingiva to the alveolar bone
Constricts the nasopharyngeal passage and elevates the larynx
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

30. Agenesis
Occurs in unusual ways and distorted crowns may appear
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
The bone that separates the root on a tooth
Drains the Pterygoid plexus of the veins

31. Intertubular Dentin
9 months (5 months ultrasound to tell sex)
6 years old
What divides the tongue in half and runs from the base to the tip of the tongue
Dentin found between the tubules

32. Stomedeum
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Drains the maxiallary artery and superficial temporal arteries
Primitive mouth
Circle and tighten the gingival margin around the neck of the tooth

33. Occlusal
Pulverizing or chewing surface
Two cortical bone plates that come together between each tooth
Indented
A dense tissue covered with mucous membrane that can withstand chewing

34. Peg lateral
4th week
Lining covers inside of the oral cavity
Peg shaped crown with a smooth surface
Band of fibrous tissue which attaches muscle to bone

35. Incisive Papilla
Two
Retracts the tongue and raises the tip of the tongue
Constricts the nasopharyngeal passage and elevates the larynx
A raised area of tissue laying behind the maxillary central incisors on the hard palate

36. How much saliva do the salivary glands produce in 24 hours?
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
2 to 3 pints
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Forming organ takes shape and resembles the shape of a bell

37. Lamina Propria
Stained growth rings in dentin
The corners of the mouth where the top and bottom lip meet
6 months/3years
The connective tissue of the marginal gingiva

38. Enamel Spindle
20
Secrete saliva to assist in process of digestion
Resulting from an imperfect union where the lobes come together
Short tubules that seem to crossover to the enamel

39. Dentinal Tubules
Tubules that pass through the entire surface of the dentin
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Assist in depressing the mandible and elevating the tongue
An enclosed area that matures into dentin - cementum and pulp

40. Mental Artery
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Band of fibrous tissue which attaches bone to bone
6 years old
Mucosa that covers the alveolar bone

41. Maxillary vein
Excess bone formations under the tongue on the alvellar bone
4 cusps/ bifurcated
Drains the Pterygoid plexus of the veins
Largest division of the trigeminal nerve

42. Xerostomia
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Raised vertical folds of tissue on the lateral border of the tongue
Excess dryness of the mouth
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

43. Triangular Ridge
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Small curved lines that run parellel to the CEJ
Elevates the posterior portion of the tongue and narrows the fauces
Teeth after cuspids

44. Exfoliated
Tissue covering the alveolar processes
Upper arch of the teeth
Elevated are of enamel that forms the Mesial and distal borders
Shed from the oral cavity

45. What is the maxillary cuspid known as?
Cells develop into different tissues
Teeth after cuspids
The inner surface of the lips
The cornerstone of the mouth

46. How many roots/ cusps does the mandibular first molar have?
Raised vertical folds of tissue on the lateral border of the tongue
1500 millimeters
Bifurcated/ 5 cusps
Second teeth next to central incisors

47. Function of Trapezius
The space between the unattached gingiva and the tooth
The development of different cells
Moves the head backward and laterally
Surface towards the midline

48. What are the only permeant teeth that are not succedaneous?
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Two weeks thru 8th week
Genioglossus - hyoglossus - styloglossus - palatoglossus
Molars

49. What are the 3 branches of the mandibular nerve branch?
Smaller branch that ennervates the soft palate uvula and tonsils
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Buccal - lingual - and inferior alveolar
10 days

50. Facial development
Cells that form dentin
Platysma - trapezius - sternocleidomastoid
Located in a depressed area between the pillars
4th week