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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. Alveologingival Fiber Groups
1500 millimeters
To bulge of curve outward
Aid in attaching the gingiva to the alveolar bone
Follows the inside of the ramus and the body of the mandible

2. Palatine Rugae
The ridges that run horizontally across the hard palate behind the incisive papilla
Cheek bones--the most breakable bone in the body
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
A bony plate covered with keratinized tissue located in the anterior portion of the palate

3. Uvula
A projection that extends off the back of the soft palate
Linear elevation of the tooth
Resists forces that try to pull the tooth outward
Molars

4. Perikymata
Small grooves noted on some teeth
Portion of the lips that are red
Rounded depression on a tooth
Pulls the hyoid bone and the tongue anteriorly

5. Maxilla
Largest facial bone with two sections joined at the median suture
Buccal - lingual - and inferior alveolar
Joined at the midline and are often referred to as the median Palatine suture
Incremental lines around the layers of the enamel matrix

6. Hypercementosis
Portion of the root seen in the oral cavity
Assist in depressing the mandible and elevating the tongue
Causes a thickening of the cementum around the apex
Radiates from the developmental groove

7. Caruncle
The inner surface of the cheeks
Surface towards the midline
Depresses the tongue
Fleshy elevation under the tongue

8. Labial
Wearing away of the incisal or occlusal surfaces of the tooth
Constricts the nasopharyngeal passage and elevates the larynx
Outside surface Which is towards the lips
Opening for the ear

9. How many cusps/ roots do the 2/3rd mandibular molars have?
(free gingiva) surrounds the teeth
A rounded area beyond the last posterior maxillary tooth
The fixed attachment of a muscle
4 cusps/ bifurcated

10. Secondary palate
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
Forms the remaining 2/3 of the hard and soft palate uvula
Joined at the midline and are often referred to as the median Palatine suture
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

11. Alveolar Mucosa
Portion of the lips where the skin meets the vermilion zone
A line of demarcation between the attached gingiva and alveolar mucosa
Appears to be loosely attached - covering the alveolar bone.
Biting edge of the teeth

12. Mandibular Artery
Papillae that give the tongue the strawberry effect
Small yellowish glands on the labial mucosa
Located behind the ramus of the mandible and branches into five arteries
Bicuspids

13. Intertubular Dentin
Follows the length of the body of the mandible past the last tooth and up to the ramus
Dentin found between the tubules
Small raised projections where taste buds are located
Quarters of the teeth

14. Mucosa
Lining covers inside of the oral cavity
A bony projection that separates each socket
Set of arches found farther in the back of the throat
A horseshoe shaped groove that follow the curve of the dental arch

15. Cortical Bone
Narrow long enamel tuft
Tissue covering the alveolar processes
Largest division of the trigeminal nerve
Compact bone plate of the facial and lingual surfaces

16. Periodontal Ligaments
Hinge motion and gliding movement
Formed by the fibroblast cells and secures the tooth in the socket
12 years
Shed from the oral cavity

17. What are the largest and strongest of the mandibular teeth
Supplies the gingival - maxillary sinus - cheeks - and maxillary molars with the exception of the mesial buccal root of the first molar
When cells rapidly increase in number
Conception thru the first two weeks
The mandibular molars

18. Agenesis
Origin - fixed point - insertion - movable point
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
A raised white line that runs parallel to where the teeth meet on the buccal mucosa
Occurs in unusual ways and distorted crowns may appear

19. Gingival Hyperplasia
An overgrowth of the gingival tissue
1500 millimeters
Vertical groove on the midline of the upper lip
Folds of tissue that extend horizontally from the uvula to the base of the tongue

20. What teeth do the deciduous (baby) tooth not include?
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
An enclosed area that matures into dentin - cementum and pulp
Occlusal surface of the posterior tooth
No bicuspids/ no 3rd molars

21. What is another name for premolars?
Bi-cuspids
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Wearing away of the incisal or occlusal surfaces of the tooth
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves

22. Middle Superior Alveolar Nerve
The deepest point of the vestibule
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
4 cusps/ bifurcated
Inside surface Which is towards the tongue - on anterior teeth

23. What are the only permeant teeth that are not succedaneous?
Molars
Lining covers inside of the oral cavity
Located behind the ramus of the mandible and branches into five arteries
2 small raised folds of tissue where the lingual frenum attaches

24. Embrasure
Developmental segment of a tooth
Molaris meaning millstone
Triangular space in the gingival direction when two adjacent teeth are in contact
H20 - mucin - organic salts and digestive enzymes

25. Stomedeum
Primitive mouth
Small curved lines that run parellel to the CEJ
Buccal - lingual - and inferior alveolar
Supplies blood to the face and oral cavity

26. Embryo
Retracts the tongue and raises the tip of the tongue
A pocket formed by the soft tissue of cheeks and gingiva
Two weeks thru 8th week
A horseshoe shaped groove that follow the curve of the dental arch

27. If a patient receives toxic agents - how long does it take for their sense of taste to return?
To dissolve
A projection that extends off the back of the soft palate
Narrow long enamel tuft
10 days

28. Styloid Process
A pocket formed by the soft tissue of cheeks and gingiva
Sharp projection on the under surface of the temporal bone
A bat shaped bone which forms the anterior portion of the skull
Linear elevation of the tooth

29. External Oblique Ridge
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
Triangular space in the gingival direction when two adjacent teeth are in contact
Follows the length of the body of the mandible past the last tooth and up to the ramus
Lift the hyoid bone and assist in opening the mouth

30. Function of mylohyoid
Digstric - Mylohyoid - stylohyoid - geniohyoid
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
Assist in depressing the mandible and elevating the tongue
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

31. Nasolacrimal groove
Bone that surrounds the root of the tooth
Extends from the medial corner of the eye to the nasal cavity
Raised vertical folds of tissue on the lateral border of the tongue
Formed by the uniting of lobes during development of crown

32. Common Carotid
Arteries supplying blood to most of the head and the neck
Chewing and swallowing food
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Follows the inside of the ramus and the body of the mandible

33. Marginal GIngiva
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Radiates from the developmental groove
(free gingiva) surrounds the teeth
Curve outward

34. Xerostomia
Oval structures that are located on the dorsal surface of the tongue
Excess dryness of the mouth
Assists in elevating the chin
Forms the remaining 2/3 of the hard and soft palate uvula

35. Marginal Ridges
Mildest form of cleft palate
Follows the length of the body of the mandible past the last tooth and up to the ramus
Bony projection found on the bottom border of the temporal bone
Elevated are of enamel that forms the Mesial and distal borders

36. How many roots/ cusps does the mandibular first molar have?
Bifurcated/ 5 cusps
Molaris meaning millstone
Disk that acts like a cushion between the temporal bone and the condyloid process
Oval depression of temporal bone in condyloid process

37. What are the intrinsical muscles of the tongue responsible for?
Middle line of the teeth
Portion of the lips where the skin meets the vermilion zone
Calcified masses of dentin
Shaping the tongue during speech - mastication and swallowing

38. What are the two ways the TMJs move?
Hinge motion and gliding movement
Found near the cementoenamel junction
Looking at the border of the tongue
A raised area of tissue laying behind the maxillary central incisors on the hard palate

39. What is saliva made of?
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Biting edge of the teeth
Located on the inside of the body of the ramus
H20 - mucin - organic salts and digestive enzymes

40. Cleft Palate
Resulting from an imperfect union where the lobes come together
Appears to be loosely attached - covering the alveolar bone.
Corners of the mouth
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

41. Distal
Surface away from the midline
The mandibular molars
Calcium salts are deposited into formed tooth
The largest of three openings located in the posterior region of the hard palate

42. Gingiva
Resists intrusive forces that try to push the tooth inwards
A dense tissue covered with mucous membrane that can withstand chewing
Fleshy elevation under the tongue
Retracts the tongue and raises the tip of the tongue

43. Evanesce
Convex area on the lingual surface near gingiva
Cells develop into different tissues
To dissolve
Responsible for laying down the enamel matrix into place

44. Greater Palatine Nerve
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Drains the Pterygoid plexus of the veins

45. Vermilion Zone
A period of both primary teeth and permeant teeth are in the dentition
Portion of the lips that are red
The largest of three openings located in the posterior region of the hard palate
Mastication - aids in speech - influence facial structure - chewing surfaces

46. What is origin and What is insertion?
Portion of the lips where the skin meets the vermilion zone
Secrete saliva to assist in process of digestion
Buccal - lingual - and inferior alveolar
Origin - fixed point - insertion - movable point

47. Foliate Papillae
Covering over the enamel that is left over from the epithelium ameloblasts
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Raised vertical folds of tissue on the lateral border of the tongue
Biting edge of the teeth

48. Dental Sac
Dividing point of a multi-rooted tooth
An enclosed area that matures into dentin - cementum and pulp
Outside surface Which is towards the lips
Growth from the oral epithelium that gives rise to the tooth buds

49. Interradical Fiber Group
Stained growth rings in dentin
Found only in multi-rooted teeth and resists rotational forces
The inner surface of the cheeks
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

50. Palatine Raphe
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth
What divides the tongue in half and runs from the base to the tip of the tongue
The slightly raised line extending down the middle of the hard palate
Where the ramus meets the body of the mandible on the outside border