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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. Rami
Pulverizing or chewing surface
Retracts or depresses the tongue
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Two vertical extensions of the mandible

2. Embryology
Study of prenatal growth and the developing process of an individual
Secrete saliva to assist in process of digestion
Developmental segment of a tooth
A small projection in the middle of the upper lip

3. Purpose of premolars
A triangular area located behind the last molar
Used to pulverize food
Molaris meaning millstone
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

4. Soft Palate
Covers muscle tissue in the posterior portion of the palate
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
A projection that extends off the back of the soft palate
Outside surface Which is towards the lips

5. Mucosa
Drains the superficial veins of the face and neck into the subclavian vein
Tissue fluid surrounding the cell membrane of the odontoblast
No bicuspids/ no 3rd molars
Lining covers inside of the oral cavity

6. What are the 3 branches of the pterygopalatine nerve branch?
A shallow v-shaped depression located below the bottom of the nose and above the lips
Forms the bulk of the tooth
Greater - lesser - naso palatine nerves
Conception thru the first two weeks

7. What kind of root does the maxillary first molar have?
Triferacated
Mildest form of cleft palate
The inner surface of the cheeks
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface

8. Uvula
A horseshoe shaped groove that follow the curve of the dental arch
Excess bone formations under the tongue on the alvellar bone
Indented
A projection that extends off the back of the soft palate

9. Gestational period
Week 12
The development of different tissues
Set of arches found farther in the back of the throat
9 months (5 months ultrasound to tell sex)

10. Gingival Groove
Covers muscle tissue in the posterior portion of the palate
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
The line of demarcation between the attached gingiva and the marginal gingiva
Pointed elongations of the pulp

11. Function of Palatopharyngeal
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Constricts the nasopharyngeal passage and elevates the larynx
Resulting from an imperfect union where the lobes come together
Chewing and swallowing food

12. What is the longest tooth in the mandibular arch?
The mandibular first premolar
Tooth emerges from gum tissue and becomes visible
Drains the superficial veins of the face and neck into the subclavian vein
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

13. What are the extrinsic muscles of the tongue responsible for?
Assist in the movement and functioning of the tongue
The fixed attachment of a muscle
Cells that form cementum
Digstric - Mylohyoid - stylohyoid - geniohyoid

14. Mastoid process
Middle line of the teeth
Bony projection found on the bottom border of the temporal bone
32
Used to pulverize food

15. Pterygoid Artery
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Occurs in unusual ways and distorted crowns may appear
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

16. Infraorbital Foramen
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Opening in the mouth below the orbit on the maxillary bone
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

17. What is the purpose of saliva?
An enclosed area that matures into dentin - cementum and pulp
Drains the superficial veins of the face and neck into the subclavian vein
To lubricate the oral cavity and to moisten food
Enamel forming cells

18. What are the characteristics of deciduous teeth?
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Branches off the inferior alveolar artery before intering the mandibular canal
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Largest facial bone with two sections joined at the median suture

19. What is the latin word for molar?
Molaris meaning millstone
Permeante teeth replace the primary teeth
Radiates from the developmental groove
Three cusps/ trifurcated

20. Greater Palatine Nerve
Assists in elevating the chin
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Pointed or rounded mounds on the crown of the tooth
Buccal - lingual - and inferior alveolar

21. Free Gingiva
The deepest point of the vestibule
The portion of the tooth that meets the gingiva
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Resulting from an imperfect union where the lobes come together

22. Fossa
Scroll like bones outside the nasal cavaties
Rounded depression on a tooth
Bi-cuspids
Excess dryness of the mouth

23. Lingual Nerve Branch
Compact bone plate of the facial and lingual surfaces
Linear elevation of the tooth
Occlusal surface of the posterior tooth
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

24. Posterior Teeth
The teeth located at the back of the mouth
Full deep rich sound in nasal cavity
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Molaris meaning millstone

25. Supplemental Groove
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
Radiates from the developmental groove
The ridges that run horizontally across the hard palate behind the incisive papilla
Looking at the border of the tongue

26. Philtrum
Circle and tighten the gingival margin around the neck of the tooth
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Vertical groove on the midline of the upper lip
Pointed or rounded mounds on the crown of the tooth

27. Attached Gingiva
Middle line of the teeth
Extends from the mucogingival junction to the gingival groove
Bi-cuspids
Looking at the border of the tongue

28. Occlusal
Indented
Pulverizing or chewing surface
Located in a depressed area between the pillars
When the dentin is exposed

29. Vermilion Zone
Study of the structure and form of the teeth
Portion of the lips that are red
A period of both primary teeth and permeant teeth are in the dentition
Place where the groove comes together or fissures cross

30. Xygomatic bones
Resist rotational forces and hold teeth in inter-proximal contact
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Appears to be loosely attached - covering the alveolar bone.
Cheek bones--the most breakable bone in the body

31. Cleft Uvula
6 months/3years
Mildest form of cleft palate
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
The mandibular first premolar

32. Primary palate
Composed of mucosa and surrounds the necks of the teeth
Biting edge of the teeth
Formed by the fibroblast cells and secures the tooth in the socket
Separates the developing oral cavities from the nasal cavities

33. Mylohyoid Nerve Branch
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
32
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
2 to 3 pints

34. Mixed Dentition
Study of the structure and form of the teeth
A horseshoe shaped groove that follow the curve of the dental arch
A period of both primary teeth and permeant teeth are in the dentition
The bone that separates the root on a tooth

35. Incisive Nerve branch
Where the ramus meets the body of the mandible on the outside border
1500 millimeters
Intervating the anterior teeth and the labial gingiva
Radiates from the developmental groove

36. Maxillary Tuberosity
Forming organ takes shape and resembles the shape of a bell
The outer edge of the nostril
A rounded area beyond the last posterior maxillary tooth
6 years old

37. Cingulum
Convex area on the lingual surface near gingiva
Bifurcated/ 5 cusps
Folds of tissue that extend horizontally from the uvula to the base of the tongue
Primary embryonic mesoderm layer that develops during the morpho differentiation period

38. Gland
Second teeth next to central incisors
Dividing point of a multi-rooted tooth
Cluster of tissue that manufactures and secrets fluid
Study of the structure and form of the teeth

39. Circumvallate Papillae
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Follows the length of the body of the mandible past the last tooth and up to the ramus
Mastication - aids in speech - influence facial structure - chewing surfaces

40. Mucogingival Junction
Circle and tighten the gingival margin around the neck of the tooth
Slight ridges on the cervical third of certain teeth that extend mesiodistally
A line of demarcation between the attached gingiva and alveolar mucosa
Compact bone plate of the facial and lingual surfaces

41. Odontal Fiber Groups
Initiation of the tooth begins
Allow flexibility during mastication - speech
Largest facial bone with two sections joined at the median suture
The area on the crown of the tooth that is nearest the gingival

42. Maxillary Nerve Branch
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
Function to resist rotational forces and tilting
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

43. Enamel Tufts
Small dark brushes
Biting edge of the teeth
A rounded area beyond the last posterior maxillary tooth
Triferacated

44. Incisive Papilla
Elevated are of enamel that forms the Mesial and distal borders
Band of fibrous tissue which attaches muscle to bone
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Cells From which connective tissue evolve

45. Cervical line
An extension of an unattached gingiva and the tooth
Divides the crown and the root
Maxillary first molar
Narrow long enamel tuft

46. Labial Mucosa
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Greater - lesser - naso palatine nerves
The inner surface of the lips
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator

47. Function of Hyoglossus
Drains the floor of the mouth
Wearing away of the incisal or occlusal surfaces of the tooth
The mandibular molars
Depresses the tongue

48. Oblique Ridge
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
The deepest point of the vestibule
Greater - lesser - naso palatine nerves

49. Buccal
Outside surface Which is towards the cheek - on posterior teeth
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
The portion of the tooth that meets the gingiva
4th week

50. Function of Platysma
Natural teeth in position
Small yellowish glands on the labial mucosa
Draws down the mandible and corners of the mouth
Allow flexibility during mastication - speech