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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. Anomalies
Supplies blood to the roots and periodontal ligaments of the interior teeth
Three bulges on the incisal edge
Extreme variations from the norm
Glands the size of a walnut that lie on the inside of the mandible and empty saliva into the mouth thru the Wharton's duct

2. Proliferation
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Appears to be loosely attached - covering the alveolar bone.
Where the ectoderm layer matures into the enamel
Small bony projections surrounding the lingual foramen

3. Cusps
Forming organ takes shape and resembles the shape of a bell
Pointed or rounded mounds on the crown of the tooth
Cheek bones--the most breakable bone in the body
Elevates the posterior portion of the tongue and narrows the fauces

4. Fetal Alcohol Syndrome symptons
The line of demarcation between the attached gingiva and the marginal gingiva
Interdental ligament
Quarters of the teeth
Small head - low nasal bridge - thin upper lip - small mandible

5. Which molar is the wisdom tooth
Pointed elongations of the pulp
Separates the developing oral cavities from the nasal cavities
Small dark brushes
Maxillary third molar

6. Embryology
Study of prenatal growth and the developing process of an individual
The study of the microscopic structure and functions of tissues
A faint line going from the ala of the nose to the corner of the mouth
Separation of the upper lip ( 1 of 1000 live births)

7. Lingual Veins
Short tubules that seem to crossover to the enamel
Of or pertaining to area surrounding naval cavity
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
Bluish veins that run the length of the tongue

8. Lingual
Separates the developing oral cavities from the nasal cavities
6 years old
The development of different tissues
Inside surface Which is towards the tongue - on anterior teeth

9. Cleft Palate
Assist in depressing the mandible and elevating the tongue
Genioglossus - hyoglossus - styloglossus - palatoglossus
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum

10. Morphology
Looking at the border of the tongue
The corners of the mouth where the top and bottom lip meet
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Study of the structure and form of the teeth

11. What are the largest and strongest of the mandibular teeth
The mandibular molars
The space between the unattached gingiva and the tooth
Sharp projection on the under surface of the temporal bone
Resulting from an imperfect union where the lobes come together

12. Philtrum
Allow flexibility during mastication - speech
Draws down the mandible and corners of the mouth
A shallow v-shaped depression located below the bottom of the nose and above the lips
Disk that acts like a cushion between the temporal bone and the condyloid process

13. Soft Palate
Covers muscle tissue in the posterior portion of the palate
Mildest form of cleft palate
Tooth emerges from gum tissue and becomes visible
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

14. Supplemental Groove
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Set of arches found farther in the back of the throat
Radiates from the developmental groove
Located behind the ramus of the mandible and branches into five arteries

15. Purpose of premolars
Used to pulverize food
The deepest point of the vestibule
Branches off the inferior alveolar artery before intering the mandibular canal
10 days

16. Morpho differentiation
Act to maintain the gingival integrity of the marginal gingiva
The development of different forms
Where the ramus meets the body of the mandible on the outside border
Study of the structure and form of the teeth

17. Odontal Fiber Groups
Allow flexibility during mastication - speech
Bifurcated/ 5 cusps
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Second teeth next to central incisors

18. What are the 4 taste senses and where are they located?
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
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Separates the developing oral cavities from the nasal cavities
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue

19. Xygomatic bones
Dividing point of a multi-rooted tooth
Inner portion of the enamel rod
Cheek bones--the most breakable bone in the body
Opening in the mouth below the orbit on the maxillary bone

20. Succedaneous teeth
Short tubules that seem to crossover to the enamel
Convex area on the lingual surface near gingiva
Dentin found between the tubules
Permeante teeth replace the primary teeth

21. Lobes
The development of different tissues
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Developmental segment of a tooth
Inside of the maxillary teeth

22. What teeth are removed if overcrowding occurs?
Indented
The mandibular first premolar
Bicuspids
Excess dryness of the mouth

23. How much saliva do the salivary glands produce in 24 hours?
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Small bony projections surrounding the lingual foramen
To dissolve
2 to 3 pints

24. Lingual Frenum
A small projection in the middle of the upper lip
Drains the maxiallary artery and superficial temporal arteries
Scroll like bones outside the nasal cavaties
A line of tissue that extends from the tongue to the floor of the mouth

25. Hard Palate
Smaller branch that ennervates the soft palate uvula and tonsils
Follows the inside of the ramus and the body of the mandible
Duct located on the parotid papilla
A bony plate covered with keratinized tissue located in the anterior portion of the palate

26. What is the purpose of permanent teeth?
The area on the crown of the tooth that is nearest the gingival
The development of different forms
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Cut - tear - and grind food

27. What are the 2 sets of teeth?
Supportive fibers that anchor the tooth to the bone
12 years
Formed by the uniting of lobes during development of crown
Primary and permanent

28. Marginal GIngiva
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
(free gingiva) surrounds the teeth
Greater - lesser - naso palatine nerves
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

29. Palatine Rugae
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
The groove below the lower lips that separates the lips from the chin
Supplies blood to the roots and periodontal ligaments of the molars and premolars
The ridges that run horizontally across the hard palate behind the incisive papilla

30. Midline
A junction or center of veins that directly or indirectly drain a vast area
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
A bat shaped bone which forms the anterior portion of the skull
Middle line of the teeth

31. Function of Platysma
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Draws down the mandible and corners of the mouth
Moves the head backward and laterally
Teeth will not erupt in proper position

32. Alveolar Crest Fiber Group
Function to resist rotational forces and tilting
Small raised projections where taste buds are located
An extension of an unattached gingiva and the tooth
The portion of the tooth that meets the gingiva

33. Genial Tubercles
Oval depression of temporal bone in condyloid process
Cluster of tissue that manufactures and secrets fluid
Duct located on the parotid papilla
Small bony projections surrounding the lingual foramen

34. Periodontium
Forms the bulk of the tooth
Enamel is thinner - pulp chamber is smaller -
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle

35. Alveologingival Fiber Groups
Assist in the movement and functioning of the tongue
An overgrowth of the gingival tissue
Acts as anchors between the alveolar bone and the tooth
Aid in attaching the gingiva to the alveolar bone

36. Interdental Ligament Group
Resist rotational forces and hold teeth in inter-proximal contact
2 small raised folds of tissue where the lingual frenum attaches
Small grooves noted on some teeth
A bony plate covered with keratinized tissue located in the anterior portion of the palate

37. Mantle Dentin
Lining covers inside of the oral cavity
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Supplies blood to the face and oral cavity
The first predentin that is formed and matures within the tube

38. Perikymata
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Small grooves noted on some teeth
Two vertical extensions of the mandible

39. What is origin and What is insertion?
Occlusal surface of the posterior tooth
Origin - fixed point - insertion - movable point
Outside surface Which is towards the cheek - on posterior teeth
The first predentin that is formed and matures within the tube

40. Imbritation Lines of Von Eboner
Portion of the root seen in the oral cavity
Stained growth rings in dentin
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
The portion of the tooth that meets the gingiva

41. Lateral Incisor
The connective tissue of the marginal gingiva
Second teeth next to central incisors
Supplies blood to the face and oral cavity
The development of different forms

42. Mylohyoid Nerve Branch
Opening for the ear
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
A small projection in the middle of the upper lip
The connective tissue of the marginal gingiva

43. Lacrimal Bones
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Assists in elevating the chin
Located behind the ramus of the mandible and branches into five arteries
Assist in the movement and functioning of the tongue

44. What are the four major muscles of facial expression
Orbicularis oris - buccinator - mentalis - zygomatic major
Excess dryness of the mouth
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
Surface towards the midline

45. Cervical line
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Enamel forming cells
Divides the crown and the root
Band of fibrous tissue which attaches muscle to bone

46. Lesser Palatine Foramen
Two
Calcium salts are deposited into formed tooth
Shaping the tongue during speech - mastication and swallowing
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

47. Ala of the Nose
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
9 months (5 months ultrasound to tell sex)
Mucosa that covers the alveolar bone
The outer edge of the nostril

48. Triangular Ridge
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Fleshy elevation under the tongue
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Mandibular central incisors

49. Convects
Mandibular central incisors
Curve outward
Place where the groove comes together or fissures cross
Week 11

50. Vermilion Zone
Portion of the lips that are red
Acts as anchors between the alveolar bone and the tooth
A condition where the lower frenum attachment is very short/DDS/frenectomy
An extension of an unattached gingiva and the tooth