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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
Cluster of tissue that manufactures and secrets fluid
Lift the hyoid bone and assist in opening the mouth
Retracts the tongue and raises the tip of the tongue
Zygomatic - infraorbital - posterior superior alevolar - pterygopalatine

2. Facial Artery
A raised area of tissue laying behind the maxillary central incisors on the hard 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
To dissolve
Extends from the medial corner of the eye to the nasal cavity

3. Labial Commissures
Fleshy elevation under the tongue
The corners of the mouth where the top and bottom lip meet
The first predentin that is formed and matures within the tube
Receives blood from the cranium - face and neck and drains into the brachiocphalic vein

4. Mental Nerve Branch
Primitive mouth
Largest division of the trigeminal nerve
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Creates the wall of the dentinal tubule

5. What are the 2 sets of teeth?
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
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
Primary and permanent
The disc becomes displaced

6. Torus
Ligaments and muscles of mastication
Lift the hyoid bone and assist in opening the mouth
Middle two teeth in the mouth
Excess bone in the middle of the palate

7. Cyto differentiation
The development of different cells
H20 - mucin - organic salts and digestive enzymes
6 months/3years
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

8. What are the only permeant teeth that are not succedaneous?
The fixed attachment of a muscle
Molars
Divides the crown and the root
Compact bone plate of the facial and lingual surfaces

9. Function of Stylohyoid
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
Study of the structure and form of the teeth
Bone that surrounds the root of the tooth
Draws the hyoid bone superiorly and posteriorly and stabilizes it

10. Cleft Palate
Outside surface Which is towards the lips
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
Creates the wall of the dentinal tubule
Secrete saliva to assist in process of digestion

11. Imbrication lines
Shed from the oral cavity
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Lower arch of the teeth
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12. Cleft Uvula
The inner surface of the lips
Mandibular central incisors
Pulverizing or chewing surface
Mildest form of cleft palate

13. Ala of the Nose
Function to resist rotational forces and tilting
Where the ramus meets the body of the mandible on the outside border
The outer edge of the nostril
The ridges that run horizontally across the hard palate behind the incisive papilla

14. Convex
To bulge of curve outward
Outside surface Which is towards the lips
The disc becomes displaced
Scroll like bones outside the nasal cavaties

15. Maxillary Arch
6 years old
Draws down the mandible and corners of the mouth
Pulverizing or chewing surface
Upper arch of the teeth

16. Stippled
Lower arch of the teeth
Shed from the oral cavity
A triangular area located behind the last molar
Healthy gingival tissue with an orange texture

17. Frenum
Disk that acts like a cushion between the temporal bone and the condyloid process
A line that represents the alveolus bone lining the socket
Extends from the medial corner of the eye to the nasal cavity
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip

18. When do the tooth buds appear?
Week 11
The layer of dentin that surrounds the pulp
The line of demarcation between the attached gingiva and the marginal gingiva
Mucosa that covers the alveolar bone

19. Rami
Innervates the orbicular oculi - the area around the eye - and the area around and behind the zygomatic arch
The largest of the salivary glands which lie just below and in front of the ear
Two vertical extensions of the mandible
Aid in attaching the gingiva to the alveolar bone

20. How many teeth are in the Primary teeth?
Bi-cuspids
Chewing and swallowing food
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Middle two teeth in the mouth

21. lst and second premolars
Teeth after cuspids
Temporal muscles - masseter muscles - internal pterygoid muscles - external pterygoid muscles
Small grooves noted on some teeth
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids

22. Mastoid process
Maxillary first molar
Composed of mucosa and surrounds the necks of the teeth
Healthy gingival tissue with an orange texture
Bony projection found on the bottom border of the temporal bone

23. Exfoliated
The largest of the salivary glands which lie just below and in front of the ear
Shed from the oral cavity
To lubricate the oral cavity and to moisten food
Supplies blood to the face and oral cavity

24. Cervical Third
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Set of arches found farther in the back of the throat
A bat shaped bone which forms the anterior portion of the skull
The area on the crown of the tooth that is nearest the gingival

25. How is the TMJ supported and what controls their movement?
To dissolve
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
Ligaments and muscles of mastication
Full deep rich sound in nasal cavity

26. Histology
6 months/3years
Tissue covering the alveolar processes
The study of the microscopic structure and functions of tissues
9 months (5 months ultrasound to tell sex)

27. Duct
Synovial fluid
Folds of tissue to the the lingual veins
Canal or passage for fluid
Cluster of tissue that manufactures and secrets fluid

28. Gingiva
Tributary of the facial vein which connects the facial vein to the pterygoid plexus of the veins
Tissue fluid surrounding the cell membrane of the odontoblast
Small head - low nasal bridge - thin upper lip - small mandible
Composed of mucosa and surrounds the necks of the teeth

29. Intertubular Dentin
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
A faint line going from the ala of the nose to the corner of the mouth
Dentin found between the tubules
Buccal - lingual - and inferior alveolar

30. Buccal Mucosa
The inner surface of the cheeks
12 years
Digstric - Mylohyoid - stylohyoid - geniohyoid
Respiratory system - digestive system and glandular organs

31. Maxillary Tuberosity
Located in a depressed area between the pillars
A rounded area beyond the last posterior maxillary tooth
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Set of arches found farther in the back of the throat

32. Cervical line
Folds of tissue to the the lingual veins
Resists intrusive forces that try to push the tooth inwards
Bony projection found on the bottom border of the temporal bone
Divides the crown and the root

33. Lingual Frenum
Calcified masses of dentin
Forms a large cavity above the roots of the maxillary molars
Formed by the fibroblast cells and secures the tooth in the socket
A line of tissue that extends from the tongue to the floor of the mouth

34. How many cusps does the second bicuspid have?
Place where the groove comes together or fissures cross
A bony projection that separates each socket
Largest of the branches of the external carotid artery; supplies facial structure
Two

35. Papilla
The bone that separates the root on a tooth
Tissue covering the alveolar processes
Small raised projections where taste buds are located
(free gingiva) surrounds the teeth

36. Circumvallate Papillae
Supplies blood to the face and oral cavity
Teeth after cuspids
Opening in the mouth below the orbit on the maxillary bone
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

37. Embryo
A triangular area located behind the last molar
Two weeks thru 8th week
Full deep rich sound in nasal cavity
Portion covered with cementum

38. Dentogingival Fiber Groups
Wearing away of the incisal or occlusal surfaces of the tooth
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Act to maintain the gingival integrity of the marginal gingiva
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

39. Function of Hyoglossus
Appears to be loosely attached - covering the alveolar bone.
Joined at the midline and are often referred to as the median Palatine suture
Linear elevation of the tooth
Depresses the tongue

40. Midline
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Middle line of the teeth

41. Middle Superior Alveolar Nerve
A bony projection that separates each socket
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth
Supplies the lateral wall of the maxillary sinus - gingiva - mesial buccal root of the first molar - and the roots of the bicuspids
Wings of the sphenoid bone

42. Function of Sternocleidomastoid
Third tooth from the midline
Creates the wall of the dentinal tubule
A bony plate covered with keratinized tissue located in the anterior portion of the palate
Assists in elevating the chin

43. Caruncle
Disk that acts like a cushion between the temporal bone and the condyloid process
Permeante teeth replace the primary teeth
Fleshy elevation under the tongue
Conception thru the first two weeks

44. Incisal Edge
Teeth after cuspids
Cheek bones--the most breakable bone in the body
Formed by the uniting of lobes during development of crown
Biting edge of the teeth

45. Proliferation
Supplies blood to the roots and periodontal ligaments of the interior teeth
Where the ectoderm layer matures into the enamel
The portion of the tooth that meets the gingiva
Sharp projection on the under surface of the temporal bone

46. Lingual Vein
The outer edge of the nostril
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Drains the floor of the mouth
Found near the cementoenamel junction

47. Gingival Hyperplasia
An overgrowth of the gingival tissue
6 months/3years
10 days
Forms into dentin - cementum and pulp of the teeth

48. Mental Artery
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
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Joined at the midline and are often referred to as the median Palatine suture
Bicuspids

49. How can you tell if someone has cancer by looking at the tongue?
2 to 3 pints
Largest facial bone with two sections joined at the median suture
Extends from the mucogingival junction to the gingival groove
Looking at the border of the tongue

50. Lacrimal Bones
Healthy gingival tissue with an orange texture
The study of the microscopic structure and functions of tissues
Anterior to the ethmoid bone and part of the orbit (corners of the eye)
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