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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. Lingual
A bony projection that separates each socket
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Inside surface Which is towards the tongue - on anterior teeth
1500 millimeters

2. Rami
Located on the inside of the body of the ramus
Found only in multi-rooted teeth and resists rotational forces
Excess dryness of the mouth
Two vertical extensions of the mandible

3. Saliva
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Formed by the uniting of lobes during development of crown
The deepest point of the vestibule
Intervating the anterior teeth and the labial gingiva

4. Evanesce
To dissolve
Forms into dentin - cementum and pulp of the teeth
A projection that extends off the back of the soft palate
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

5. Posterior Superior Alveolar Nerve
Pointed elongations of the pulp
Resist rotational forces and hold teeth in inter-proximal contact
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
Maxillary third molar

6. How many cusps/ roots do the 2/3rd mandibular molars have?
A shallow v-shaped depression located below the bottom of the nose and above the lips
4 cusps/ bifurcated
Resists intrusive forces that try to push the tooth inwards
Layers of tooth tissue become calcified

7. What are the characteristics of permanent teeth?
Enamel is thinner - pulp chamber is smaller -
Layers of tooth tissue become calcified
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
Surface away from the midline

8. Morphology
Study of the structure and form of the teeth
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Small grooves noted on some teeth
Origin - fixed point - insertion - movable point

9. Dentinal Hypersensitivity
Forms into dentin - cementum and pulp of the teeth
Teeth will not erupt in proper position
To bulge of curve outward
When the dentin is exposed

10. Occlusion third
Radiates from the developmental groove
Occlusal surface of the posterior tooth
When cells rapidly increase in number
A pocket formed by the soft tissue of cheeks and gingiva

11. If Palate not fused
Teeth will not erupt in proper position
Surface away from the midline
Small curved lines that run parellel to the CEJ
Supplies blood to the roots and periodontal ligaments of the molars and premolars

12. What is the largest cranial nerve and the most important to dental auxillaries and why?
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
An overgrowth of the gingival tissue
Trigeminal nerve--because it ennervates the maxilla and the mandible
Indented

13. Osteoclasts
Occurs in unusual ways and distorted crowns may appear
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Outside surface Which is towards the cheek - on posterior teeth
Oval structures that are located on the dorsal surface of the tongue

14. Agenesis
Set of arches found farther in the back of the throat
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
Occurs in unusual ways and distorted crowns may appear
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

15. Secondary Dentin
2 to 3 pints
Forms after the completion of the apical foramen
Corners of the mouth
Natural teeth in position

16. Attached Gingiva
Extends from the mucogingival junction to the gingival groove
Acts as anchors between the alveolar bone and the tooth
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Used to pulverize food

17. Contact Area
Resist rotational forces and hold teeth in inter-proximal contact
A faint line going from the ala of the nose to the corner of the mouth
Assist in depressing the mandible and elevating the tongue
Where the proximal sides of two teeth come together and touch

18. Sublingual Sulcus
A horseshoe shaped groove that follow the curve of the dental arch
Resists forces that try to pull the tooth outward
A bony projection that separates each socket
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

19. Nasmyths Membrane
Ligaments and muscles of mastication
Covering over the enamel that is left over from the epithelium ameloblasts
Extreme variations from the norm
Found near the cementoenamel junction

20. Attrition
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Wearing away of the incisal or occlusal surfaces of the tooth
Function to resist rotational forces and tilting

21. Sharpey's Fibers
Acts as anchors between the alveolar bone and the tooth
Responsible for laying down the enamel matrix into place
Bi-cuspids
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue

22. Fossa
Small linear depression
Appears to be loosely attached - covering the alveolar bone.
Rounded depression on a tooth
A junction or center of veins that directly or indirectly drain a vast area

23. Parotid glands
Covers muscle tissue in the posterior portion of the palate
Folds of tissue to the the lingual veins
Digstric - Mylohyoid - stylohyoid - geniohyoid
The largest of the salivary glands which lie just below and in front of the ear

24. Maxilla
Resist rotational forces and hold teeth in inter-proximal contact
Largest facial bone with two sections joined at the median suture
The first predentin that is formed and matures within the tube
The portion of the tooth that meets the gingiva

25. Circumpulpal Dentin
The layer of dentin that surrounds the pulp
12 years
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
A faint line going from the ala of the nose to the corner of the mouth

26. Mandibular Artery
Located behind the ramus of the mandible and branches into five arteries
The largest of the salivary glands which lie just below and in front of the ear
Supplies blood to the face and oral cavity
6 months/3years

27. Which molar contains the cusp of Caribelli?
Maxillary first molar
Small head - low nasal bridge - thin upper lip - small mandible
Duct located on the parotid papilla
Joined at the midline and are often referred to as the median Palatine suture

28. Imbritation Lines of Von Eboner
Synovial fluid
A pocket formed by the soft tissue of cheeks and gingiva
Stained growth rings in dentin
The mandibular molars

29. What are the extrinsic muscles of the tongue responsible for?
Assist in the movement and functioning of the tongue
The space between the unattached gingiva and the tooth
Duct located on the parotid papilla
Outside surface Which is towards the lips

30. Tendon
Primitive mouth
Band of fibrous tissue which attaches muscle to bone
Permeante teeth replace the primary teeth
Raised vertical folds of tissue on the lateral border of the tongue

31. Morpho Differentiation
Forming organ takes shape and resembles the shape of a bell
6 years old
Occurs in unusual ways and distorted crowns may appear
Branches off the inferior alveolar artery before intering the mandibular canal

32. Taste Buds
Small curved lines that run parellel to the CEJ
Oval structures that are located on the dorsal surface of the tongue
When the surface of the teeth becomes grooved
Growth from the oral epithelium that gives rise to the tooth buds

33. How much saliva do the salivary glands produce in 24 hours?
The fixed attachment of a muscle
2 to 3 pints
9 months (5 months ultrasound to tell sex)
Three cusps/ trifurcated

34. Where is the palate located?
The first predentin that is formed and matures within the tube
Inside of the maxillary teeth
Third tooth from the midline
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

35. Lingual Foramen
The internal surface at the center of the mandible
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Corners of the mouth
Mandibular central incisors

36. Incisive Papilla
Draws down the mandible and corners of the mouth
Extreme variations from the norm
A raised area of tissue laying behind the maxillary central incisors on the hard palate
2 small raised folds of tissue where the lingual frenum attaches

37. Groove
Small head - low nasal bridge - thin upper lip - small mandible
The internal surface at the center of the mandible
Canal or passage for fluid
Small linear depression

38. Mesial
Surface towards the midline
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Vertical groove on the midline of the upper lip
Drains the facial structures beginning near the eye and descending toward the mandible

39. Fetus
9 weeks thru birth
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Incremental line indicating trauma of birth
Small head - low nasal bridge - thin upper lip - small mandible

40. Inferior Nasal Conchae
Functions the same as the alveolar cfg; originate in alveolar bone
Scroll like bones outside the nasal cavaties
Cells develop into different tissues
Primary and permanent

41. Marginal GIngiva
(free gingiva) surrounds the teeth
Short tubules that seem to crossover to the enamel
Biting edge of the teeth
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

42. Lateral Incisor
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
Second teeth next to central incisors
Calcified masses of dentin
The cornerstone of the mouth

43. Linea Alba
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
The bone that separates the root on a tooth
Resists forces that try to pull the tooth outward
A junction or center of veins that directly or indirectly drain a vast area

44. Furcation
Dividing point of a multi-rooted tooth
4/5 cusps/ 3 roots
Largest division of the trigeminal nerve
Assist in the movement and functioning of the tongue

45. What are the only permeant teeth that are not succedaneous?
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Molars
Portion of the root seen in the oral cavity
An overgrowth of the gingival tissue

46. Internal Oblique Ridge
Small head - low nasal bridge - thin upper lip - small mandible
Formed by the uniting of lobes during development of crown
Follows the inside of the ramus and the body of the mandible
Supplies blood to the roots and periodontal ligaments of the interior teeth

47. Mental Nerve Branch
Located in a depressed area between the pillars
Largest division of the trigeminal nerve
The development of different tissues
Elevates the posterior portion of the tongue and narrows the fauces

48. Anterior Alveolar Nerve
Acts as anchors between the alveolar bone and the tooth
Middle two teeth in the mouth
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Tissue covering the alveolar processes

49. What is the purpose of permanent teeth?
Cut - tear - and grind food
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Slight ridges on the cervical third of certain teeth that extend mesiodistally

50. Pterygoid Artery
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Bi-cuspids
An overgrowth of the gingival tissue
Retracts or depresses the tongue