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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. Function of Styloglossus
The first predentin that is formed and matures within the tube
A projection that extends off the back of the soft palate
Retracts the tongue and raises the tip of the tongue
Aid in attaching the gingiva to the alveolar bone

2. Middle Superior Alveolar Nerve
Found only in multi-rooted teeth and resists rotational forces
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Separation of the upper lip ( 1 of 1000 live births)
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids

3. Cleft Lip
Developmental segment of a tooth
2 to 3 pints
Enamel is thinner - pulp chamber is smaller -
Separation of the upper lip ( 1 of 1000 live births)

4. Retro Mandibular Vein
Drains the maxiallary artery and superficial temporal arteries
Mildest form of cleft palate
Molars
Layers of tooth tissue become calcified

5. Cingulum
H20 - mucin - organic salts and digestive enzymes
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Convex area on the lingual surface near gingiva
Bifurcated/ 5 cusps

6. How many cusps/ roots do the 2/3rd maxillary molars have?
Three cusps/ trifurcated
A line of tissue that extends from the tongue to the floor of the mouth
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
Draws the hyoid bone superiorly and posteriorly and stabilizes it

7. Midline
H20 - mucin - organic salts and digestive enzymes
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Middle line of the teeth
A horseshoe shaped groove that follow the curve of the dental arch

8. What are the characteristics of deciduous teeth?
Teeth after cuspids
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Week 12
Substances between cells

9. Buckle groove
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
The deepest point of the vestibule
Functions the same as the alveolar cfg; originate in alveolar bone
A horseshoe shaped groove that follow the curve of the dental arch

10. Maxillary Sinus
Divides the crown and the root
Tubules that pass through the entire surface of the dentin
Raised vertical folds of tissue on the lateral border of the tongue
Forms a large cavity above the roots of the maxillary molars

11. Dental Sac
An enclosed area that matures into dentin - cementum and pulp
The groove below the lower lips that separates the lips from the chin
Quarters of the teeth
Third tooth from the midline

12. Eruption
Tooth emerges from gum tissue and becomes visible
Assist in depressing the mandible and elevating the tongue
Supplies blood to the brain and the eyes
Pulls the hyoid bone and the tongue anteriorly

13. Function of Palatopharyngeal
Portion of the lips that are red
Maxillary third molar
Constricts the nasopharyngeal passage and elevates the larynx
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch

14. When do oral and nasal cavity separate and palate develop?
Week 12
Cheek bones--the most breakable bone in the body
Folds of tissue to the the lingual veins
When the tissue becomes inflamed

15. Agenesis
No bicuspids/ no 3rd molars
What divides the tongue in half and runs from the base to the tip of the tongue
Occurs in unusual ways and distorted crowns may appear
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries

16. Alveologingival Fiber Groups
Upper arch of the teeth
Aid in attaching the gingiva to the alveolar bone
Greater - lesser - naso palatine nerves
Platysma - trapezius - sternocleidomastoid

17. Deep Facial Veins
Found only in multi-rooted teeth and resists rotational forces
Resulting from an imperfect union where the lobes come together
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Resists intrusive forces that try to push the tooth inwards

18. Gland
Small dark brushes
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Scroll like bones outside the nasal cavaties
Cluster of tissue that manufactures and secrets fluid

19. How many cusps/ roots do the maxillary first molars have?
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Responsible for laying down the enamel matrix into place
The development of different forms
4/5 cusps/ 3 roots

20. Maxilla
Healthy gingival tissue with an orange texture
Curve outward
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Largest facial bone with two sections joined at the median suture

21. Posterior Tonsillar Pillar
Set of arches found farther in the back of the throat
Begin at the caruncles on either side of the frenum and run backward to the base of the tongue
Used to pulverize food
A triangular area located behind the last molar

22. Incisive Nerve branch
Looking at the border of the tongue
Located behind the ramus of the mandible and branches into five arteries
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Intervating the anterior teeth and the labial gingiva

23. Odontogenesis
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Looking at the border of the tongue
Origin of the tooth
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

24. Where is the palate located?
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Inside of the maxillary teeth
To lubricate the oral cavity and to moisten food
The inner surface of the cheeks

25. Mandibular Foramen
Supplies blood to the brain and the eyes
A line of tissue that extends from the tongue to the floor of the mouth
Located on the inside of the body of the ramus
Inside surface Which is towards the tongue - on anterior teeth

26. Rod Core
Portion of the lips that are red
Inner portion of the enamel rod
A small projection in the middle of the upper lip
Slight ridges on the cervical third of certain teeth that extend mesiodistally

27. Facial Vein
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
Drains the facial structures beginning near the eye and descending toward the mandible
A faint line going from the ala of the nose to the corner of the mouth
Vertical groove on the midline of the upper lip

28. What is the largest cranial nerve and the most important to dental auxillaries and why?
Trigeminal nerve--because it ennervates the maxilla and the mandible
Retracts or depresses the tongue
The development of different tissues
Respiratory system - digestive system and glandular organs

29. Palatine Bones
Joined at the midline and are often referred to as the median Palatine suture
Middle two teeth in the mouth
Biting edge of the teeth
Where the ectoderm layer matures into the enamel

30. Lesser Palatine Nerve
Smaller branch that ennervates the soft palate uvula and tonsils
Ala of the nose - naso-labial groove - philtrum - vermilion border - vermilion zone - turbercle of the lip - labial commissures - labio-mental grooves
Small dark brushes
Week 11

31. Maxillary Nerve Branch
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Buccal - lingual - and inferior alveolar
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
The mandibular first premolar

32. Alveolar Mucosa
Chewing and swallowing food
Mucosa that covers the alveolar bone
Forms into dentin - cementum and pulp of the teeth
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

33. Histo Differentiation
Oval structures that are located on the dorsal surface of the tongue
Cells develop into different tissues
Mildest form of cleft palate
Demonstrates a disturbance in the body metabolism

34. Evanesce
To dissolve
Molaris meaning millstone
Calcified masses of dentin
Quarters of the teeth

35. What are the 2 sets of teeth?
Primary and permanent
Wearing away of the incisal or occlusal surfaces of the tooth
Located in a depressed area between the pillars
Causes a thickening of the cementum around the apex

36. How much saliva do the salivary glands produce in 24 hours?
2 to 3 pints
The crown of the tooth that is nearest the incisal edge near the anterior tooth
Pointed elongations of the pulp
The outer edge of the nostril

37. Succedaneous teeth
Circle and tighten the gingival margin around the neck of the tooth
Permeante teeth replace the primary teeth
The mandibular molars
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

38. Buccal Mucosa
Tissue covering the alveolar processes
The inner surface of the cheeks
Resists intrusive forces that try to push the tooth inwards
Quarters of the teeth

39. External Carotid Artery
The study of the microscopic structure and functions of tissues
The deepest point of the vestibule
Peg shaped crown with a smooth surface
Supplies blood to the face and oral cavity

40. Fissure
Resulting from an imperfect union where the lobes come together
Triferacated
Drains the Pterygoid plexus of the veins
The portion of the tooth that meets the gingiva

41. Oblique Fiber Group
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Resists intrusive forces that try to push the tooth inwards
A bat shaped bone which forms the anterior portion of the skull
Opening for the ear

42. Pterygoid Artery
Portion covered with cementum
Covers muscle tissue in the posterior portion of the palate
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
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

43. Parotid glands
The largest of the salivary glands which lie just below and in front of the ear
Arteries supplying blood to most of the head and the neck
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
A line of tissue that extends from the tongue to the floor of the mouth

44. Labial Commissures
Two cortical bone plates that come together between each tooth
Two
Corners of the mouth
Growth from the oral epithelium that gives rise to the tooth buds

45. Dentinal Hypersensitivity
When the dentin is exposed
Resists intrusive forces that try to push the tooth inwards
4 cusps/ bifurcated
Follows the length of the body of the mandible past the last tooth and up to the ramus

46. Filiform Papillae
Hinge motion and gliding movement
A flap of tissue on the on the buccal mucosa
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Ligaments and muscles of mastication

47. Groove
Small linear depression
Surface away from the midline
Quarters of the teeth
Small yellowish glands on the labial mucosa

48. Embryology
Separation of the upper lip ( 1 of 1000 live births)
Study of prenatal growth and the developing process of an individual
The moveable attachment of the muscle
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

49. Mandible Arch
Circle and tighten the gingival margin around the neck of the tooth
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Lower arch of the teeth
Enamel forming cells

50. Fibroblasts
Excess bone formations under the tongue on the alvellar bone
Pointed or rounded mounds on the crown of the tooth
Cells From which connective tissue evolve
A shallow v-shaped depression located below the bottom of the nose and above the lips