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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. Distal
Maxillary third molar
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Surface away from the midline
Shaping the tongue during speech - mastication and swallowing

2. Palatine Raphe
Pulverizing or chewing surface
Forms a large cavity above the roots of the maxillary molars
Trigeminal - facial - glossopharyngeal - hypoglossal
The slightly raised line extending down the middle of the hard palate

3. What are the characteristics of permanent teeth?
Act to maintain the gingival integrity of the marginal gingiva
Enamel is thinner - pulp chamber is smaller -
Permeante teeth replace the primary teeth
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar

4. Facial Vein
Extreme variations from the norm
Portion of the root seen in the oral cavity
Inner portion of the enamel rod
Drains the facial structures beginning near the eye and descending toward the mandible

5. Palatine Rugae
Joined at the midline and are often referred to as the median Palatine suture
Resists forces that try to pull the tooth outward
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
The ridges that run horizontally across the hard palate behind the incisive papilla

6. Convects
Three bulges on the incisal edge
Curve outward
Quarters of the teeth
A line of demarcation between the attached gingiva and alveolar mucosa

7. Gestational period
The development of different forms
Resists intrusive forces that try to push the tooth inwards
9 months (5 months ultrasound to tell sex)
4th week

8. Torus
Excess bone in the middle of the palate
Covers muscle tissue in the posterior portion of the palate
Two
A period of both primary teeth and permeant teeth are in the dentition

9. Cervical line
When cells rapidly increase in number
Enamel is thinner - pulp chamber is smaller -
Divides the crown and the root
Stained growth rings in dentin

10. Xygote
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Wearing away of the incisal or occlusal surfaces of the tooth
Resulting from an imperfect union where the lobes come together
When cells rapidly increase in number

11. Mylohyoid Artery
Supportive fibers that anchor the tooth to the bone
Dividing point of a multi-rooted tooth
Branches off the inferior alveolar artery before intering the mandibular canal
Week 12

12. Function of Palatopharyngeal
Small yellowish glands on the labial mucosa
Constricts the nasopharyngeal passage and elevates the larynx
Largest of the branches of the external carotid artery; supplies facial structure
Origin - fixed point - insertion - movable point

13. Tendon
Band of fibrous tissue which attaches muscle to bone
Assist in the movement and functioning of the tongue
Linear elevation of the tooth
Growth from the oral epithelium that gives rise to the tooth buds

14. Mastoid process
Raised vertical folds of tissue on the lateral border of the tongue
Bony projection found on the bottom border of the temporal bone
The portion of the tooth that meets the gingiva
A flap of tissue on the on the buccal mucosa

15. Function of Sternocleidomastoid
Portion of the lips that are red
Study of the structure and form of the teeth
Assists in elevating the chin
Primary embryonic mesoderm layer that develops during the morpho differentiation period

16. Mandibular Artery
Small raised projections where taste buds are located
The layer of dentin that surrounds the pulp
Portion covered with cementum
Located behind the ramus of the mandible and branches into five arteries

17. What are the 4 maxillary nerve branches?
Compact bone plate of the facial and lingual surfaces
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
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
Teeth after cuspids

18. Submandibular Glands

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19. Ridge
Linear elevation of the tooth
Found only in multi-rooted teeth and resists rotational forces
Cells From which connective tissue evolve
Lift the hyoid bone and assist in opening the mouth

20. What teeth do the deciduous (baby) tooth not include?
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
No bicuspids/ no 3rd molars
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Elevates the posterior portion of the tongue and narrows the fauces

21. Morphology
Lift the hyoid bone and assist in opening the mouth
Of or pertaining to area surrounding naval cavity
Calcium salts are deposited into formed tooth
Study of the structure and form of the teeth

22. Mesenchyme Tissue
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Pulverizing or chewing surface
Supplies blood to the roots and periodontal ligaments of the interior teeth
Primary embryonic mesoderm layer that develops during the morpho differentiation period

23. What ligament is retained the longest during periodontal disease?
The development of different tissues
Small dark brushes
20
Interdental ligament

24. Internal Jugular Vein
Of or pertaining to area surrounding naval cavity
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein
Fleshy elevation under the tongue
Drains the maxiallary artery and superficial temporal arteries

25. Uvula
Curve outward
Incremental line indicating trauma of birth
A projection that extends off the back of the soft palate
The corners of the mouth where the top and bottom lip meet

26. External Oblique Ridge
Occlusal surface of the posterior tooth
Papillae that give the tongue the strawberry effect
Follows the length of the body of the mandible past the last tooth and up to the ramus
Largest division of the trigeminal nerve

27. Fimbriated Folds
Disk that acts like a cushion between the temporal bone and the condyloid process
Retracts the tongue and raises the tip of the tongue
The groove below the lower lips that separates the lips from the chin
Folds of tissue to the the lingual veins

28. Lamina Propria
The connective tissue of the marginal gingiva
The study of the microscopic structure and functions of tissues
A pocket formed by the soft tissue of cheeks and gingiva
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone

29. Lingual Veins
Maxillary first molar
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Drains the maxiallary artery and superficial temporal arteries
Bluish veins that run the length of the tongue

30. What are the eight landmarks of the face?
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Of or pertaining to area surrounding naval cavity
The deepest point of the vestibule
Set of arches found farther in the back of the throat

31. Greater Palatine Foramen
The ridges that run horizontally across the hard palate behind the incisive papilla
Permeante teeth replace the primary teeth
The largest of three openings located in the posterior region of the hard palate
Bluish veins that run the length of the tongue

32. Odontal Fiber Groups
Allow flexibility during mastication - speech
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
Trigeminal nerve--because it ennervates the maxilla and the mandible
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen

33. Ectoderm
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Papillae that give the tongue the strawberry effect
Looking at the border of the tongue
Clear fluid secreted by the salivary and mucous glands throughout the mouth

34. What are the 3 branches of the pterygopalatine nerve branch?
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Portion covered with cementum
Greater - lesser - naso palatine nerves
The inner surface of the lips

35. Central Incisor
The corners of the mouth where the top and bottom lip meet
Middle two teeth in the mouth
Band of fibrous tissue which attaches bone to bone
Formed by the uniting of lobes during development of crown

36. Retromolar Area
Place where the groove comes together or fissures cross
Substances between cells
Secrete saliva to assist in process of digestion
A triangular area located behind the last molar

37. Buccal Mucosa
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
Excess bone in the middle of the palate
When the dentin is exposed

38. Glenoid Fossa
The inner surface of the cheeks
Wearing away of the incisal or occlusal surfaces of the tooth
Oval depression of temporal bone in condyloid process
Digstric - Mylohyoid - stylohyoid - geniohyoid

39. Mental Artery
The development of different tissues
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Primary and permanent
Pointed elongations of the pulp

40. Marginal GIngiva
(free gingiva) surrounds the teeth
Palatoglossus - palatopharyngeal
Elevates the posterior portion of the tongue and narrows the fauces
Stained growth rings in dentin

41. How many cusps does the second bicuspid have?
Wearing away of the incisal or occlusal surfaces of the tooth
Outside surface Which is towards the cheek - on posterior teeth
Lower arch of the teeth
Two

42. Osteoclasts
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
A dense tissue covered with mucous membrane that can withstand chewing

43. Mylohyoid Nerve Branch
Mildest form of cleft palate
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
Stained growth rings in dentin
A small projection in the middle of the upper lip

44. Mental Protuberance
The tip of the chin
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Pulverizing or chewing surface
The mandibular molars

45. Fossa
Rounded depression on a tooth
Primitive mouth
Divides the crown and the root
A period of both primary teeth and permeant teeth are in the dentition

46. Caruncle
Fleshy elevation under the tongue
Triferacated
Lift the hyoid bone and assist in opening the mouth
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle

47. Groove
Draws down the mandible and corners of the mouth
Small linear depression
Band of fibrous tissue which attaches muscle to bone
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

48. Torus Mandibularis
Excess bone formations under the tongue on the alvellar bone
The development of different tissues
Small bony projections surrounding the lingual foramen
Small yellowish glands on the labial mucosa

49. Duct
Canal or passage for fluid
4/5 cusps/ 3 roots
Mastication - aids in speech - influence facial structure - chewing surfaces
Constricts the nasopharyngeal passage and elevates the larynx

50. Alveolar Mucosa
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Scroll like bones outside the nasal cavaties
Mucosa that covers the alveolar bone
Cut - tear - and grind food