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Dental Assisting: Head And Neck Anatomy

Subjects : health-sciences, dentistry

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Answer 50 questions in 15 minutes.
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1. What are the 4 pairs of muscles of mastication!
2 small raised folds of tissue where the lingual frenum attaches
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine
Natural teeth in position
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles

2. What are the 3 branches of the pterygopalatine nerve branch?
The slightly raised line extending down the middle of the hard palate
Intervates the anterior maxillary sinus - gingiva - cuspids - laterals - and central incisors
Greater - lesser - naso palatine nerves
Compact bone plate of the facial and lingual surfaces

3. Function of Styloglossus
Excess dryness of the mouth
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx
32
Retracts the tongue and raises the tip of the tongue

4. Common Carotid
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
Biting edge of the teeth
Arteries supplying blood to most of the head and the neck
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

5. Buccal Mucosa
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
The inner surface of the cheeks
Outside surface Which is towards the cheek - on posterior teeth
Band of fibrous tissue which attaches muscle to bone

6. Imbracation Lines
Fleshy elevation under the tongue
The bone that separates the root on a tooth
Small curved lines that run parellel to the CEJ
Band of fibrous tissue which attaches bone to bone

7. Ligament
Assist in depressing the mandible and elevating the tongue
Band of fibrous tissue which attaches bone to bone
Enamel forming cells
Formed by the fibroblast cells and secures the tooth in the socket

8. Apposition
Calcium salts are deposited into formed tooth
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Lift the hyoid bone and assist in opening the mouth
Forms into dentin - cementum and pulp of the teeth

9. Lingual Veins
Drains the maxiallary artery and superficial temporal arteries
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Bluish veins that run the length of the tongue
Assist in depressing the mandible and elevating the tongue

10. Dentinal Hypersensitivity
Linear elevation of the tooth
When the dentin is exposed
Clear fluid secreted by the salivary and mucous glands throughout the mouth
The disc becomes displaced

11. Nasal-Labial Groove
Bluish veins that run the length of the tongue
Located in a depressed area between the pillars
A faint line going from the ala of the nose to the corner of the mouth
The largest of the salivary glands which lie just below and in front of the ear

12. Philtrum
1500 millimeters
The inner surface of the lips
Linear elevation of the tooth
A shallow v-shaped depression located below the bottom of the nose and above the lips

13. Ala of the Nose
A shallow v-shaped depression located below the bottom of the nose and above the lips
The outer edge of the nostril
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Radiates from the developmental groove

14. Angle of the Mandible
Pulverizing or chewing surface
Teeth will not erupt in proper position
Where the ramus meets the body of the mandible on the outside border
Mildest form of cleft palate

15. What are the 4 muscles of the floor of the mouth?
Digstric - Mylohyoid - stylohyoid - geniohyoid
Greater - lesser - naso palatine nerves
Small head - low nasal bridge - thin upper lip - small mandible
Opening for the ear

16. Caruncle
Surface towards the midline
Band of fibrous tissue which attaches muscle to bone
Scroll like bones outside the nasal cavaties
Fleshy elevation under the tongue

17. Lateral Incisor
To lubricate the oral cavity and to moisten food
Second teeth next to central incisors
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
Primary and permanent

18. Facial Vein
Third tooth from the midline
The bone that separates the root on a tooth
Developmental segment of a tooth
Drains the facial structures beginning near the eye and descending toward the mandible

19. When do oral and nasal cavity separate and palate develop?
A bat shaped bone which forms the anterior portion of the skull
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct
Week 12
Curve outward

20. Central Incisor
Follows the inside of the ramus and the body of the mandible
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
Middle two teeth in the mouth
Extends from the mucogingival junction to the gingival groove

21. Oblique Fiber Group
Resists intrusive forces that try to push the tooth inwards
Tooth emerges from gum tissue and becomes visible
Follows the inside of the ramus and the body of the mandible
Elevated are of enamel that forms the Mesial and distal borders

22. Osteoclasts
The corners of the mouth where the top and bottom lip meet
Dissolve and reabsorb calcium salts of the bone matrix when stressed or damaged
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Respiratory system - digestive system and glandular organs

23. Lingual Foramen
Small raised projections where taste buds are located
Cluster of tissue that manufactures and secrets fluid
The internal surface at the center of the mandible
Lower arch of the teeth

24. Lingual Nerve Branch
Curve outward
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
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
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

25. Facial Artery
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
Wings of the sphenoid bone
Dividing point of a multi-rooted tooth
The moveable attachment of the muscle

26. Gingival Groove
A condition where the lower frenum attachment is very short/DDS/frenectomy
The line of demarcation between the attached gingiva and the marginal gingiva
Separation of the upper lip ( 1 of 1000 live births)
Where the ramus meets the body of the mandible on the outside border

27. Gingival Sulcus
Two cortical bone plates that come together between each tooth
A dense tissue covered with mucous membrane that can withstand chewing
Calcified masses of dentin
The space between the unattached gingiva and the tooth

28. Lingual Vein
Separates the developing oral cavities from the nasal cavities
Separation of the upper lip ( 1 of 1000 live births)
Set of arches found farther in the back of the throat
Drains the floor of the mouth

29. Interdental Septum
The corners of the mouth where the top and bottom lip meet
Located on the inside of the body of the ramus
An enclosed area that matures into dentin - cementum and pulp
A bony projection that separates each socket

30. Embrasure
Opening for the ear
Separates the developing oral cavities from the nasal cavities
Triangular space in the gingival direction when two adjacent teeth are in contact
Synovial fluid

31. External Jugular Vein
Drains the superficial veins of the face and neck into the subclavian vein
Occlusal surface of the posterior tooth
Supplies blood to the brain and the eyes
Resist rotational forces and hold teeth in inter-proximal contact

32. Middle Superior Alveolar Nerve
Extends interiorly from the pterygopalatine nerve and exits thru the incisive foramen
Triangular space in the gingival direction when two adjacent teeth are in contact
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
The first predentin that is formed and matures within the tube

33. Symphysis
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Acts as anchors between the alveolar bone and the tooth
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Descends from the cusp and widens as it runs down to the midline area of the occlusal surface

34. Xygote
Excess dryness of the mouth
Conception thru the first two weeks
An overgrowth of the gingival tissue
Resulting from an imperfect union where the lobes come together

35. Torus
Excess bone in the middle of the palate
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
A rounded area beyond the last posterior maxillary tooth
Divides the crown and the root

36. Maxillary Arch
Upper arch of the teeth
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
Inside of the maxillary teeth
Place where the groove comes together or fissures cross

37. Neonatal line
Incremental line indicating trauma of birth
Respiratory system - digestive system and glandular organs
Constricts the nasopharyngeal passage and elevates the larynx
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth

38. Vermilion Zone
Portion of the lips that are red
Tissue covering the alveolar processes
Bifurcated/ 5 cusps
Teeth after cuspids

39. Cuspid
Inner portion of the enamel rod
Third tooth from the midline
The mandibular molars
Intervating the anterior teeth and the labial gingiva

40. Nasolacrimal groove
Extends from the medial corner of the eye to the nasal cavity
Portion of the lips where the skin meets the vermilion zone
Causes a thickening of the cementum around the apex
Extends from the mucogingival junction to the gingival groove

41. Maxilla
Where the ramus meets the body of the mandible on the outside border
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Largest facial bone with two sections joined at the median suture
Inside surface Which is towards the tongue - on anterior teeth

42. Fossa
Opening in the mouth below the orbit on the maxillary bone
The teeth located at the back of the mouth
Rounded depression on a tooth
4 cusps/ bifurcated

43. Mesial
Portion of the lips where the skin meets the vermilion zone
Bi-cuspids
Elevated are of enamel that forms the Mesial and distal borders
Surface towards the midline

44. Ameloblast
The largest of the salivary glands which lie just below and in front of the ear
Enamel forming cells
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Opening for the ear

45. Eruption
Tooth emerges from gum tissue and becomes visible
Molaris meaning millstone
Small dark brushes
Forms the bulk of the tooth

46. Filiform Papillae
A dense tissue covered with mucous membrane that can withstand chewing
The layer of dentin that surrounds the pulp
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Clear fluid secreted by the salivary and mucous glands throughout the mouth

47. Labial Commissures
(free gingiva) surrounds the teeth
Healthy gingival tissue with an orange texture
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Corners of the mouth

48. Soft Palate
Shaping the tongue during speech - mastication and swallowing
Covers muscle tissue in the posterior portion of the palate
Forms a large cavity above the roots of the maxillary molars
Branches off the inferior alveolar artery before intering the mandibular canal

49. Parotid glands
The layer of dentin that surrounds the pulp
The largest of the salivary glands which lie just below and in front of the ear
The disc becomes displaced
Incremental line indicating trauma of birth

50. What are the 4 extrinsic muscles of the tongue
Curve outward
Cheek bones--the most breakable bone in the body
Study of prenatal growth and the developing process of an individual
Genioglossus - hyoglossus - styloglossus - palatoglossus

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Dental Assisting: Head And Neck Anatomy

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