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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.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. Peritubular Dentin
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Creates the wall of the dentinal tubule
Formed by the fibroblast cells and secures the tooth in the socket
Inside of the maxillary teeth

2. How many cusps does the second bicuspid have?
Two
4 cusps/ bifurcated
Supplies blood to the face and oral cavity
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

3. Marginal GIngiva
Opening in the mouth below the orbit on the maxillary bone
Lower arch of the teeth
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)
(free gingiva) surrounds the teeth

4. Fungiform Papillae
Substances between cells
Papillae that give the tongue the strawberry effect
Middle two teeth in the mouth
To lubricate the oral cavity and to moisten food

5. Clinical root
A bat shaped bone which forms the anterior portion of the skull
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
Portion of the root seen in the oral cavity
Composed of mucosa and surrounds the necks of the teeth

6. Articular Disc
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Quarters of the teeth
When the dentin is exposed
A bat shaped bone which forms the anterior portion of the skull

7. Mental Nerve Branch
Largest division of the trigeminal nerve
Covering over the enamel that is left over from the epithelium ameloblasts
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
Middle line of the teeth

8. Dentinal Hypersensitivity
Calcified masses of dentin
When the dentin is exposed
The area on the crown of the tooth that is nearest the gingival
More common in girls--the failure of the palatal shelves to fuse with the primary palate (1 in 2500 births)

9. Landmarks
Retracts or depresses the tongue
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
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Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements

10. Free Gingiva
The portion of the tooth that meets the gingiva
Calcified masses of dentin
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Draws down the mandible and corners of the mouth

11. Incisive Papilla
32
A bony projection that separates each socket
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Two weeks thru 8th week

12. How much saliva is produced daily?
Bi-cuspids
1500 millimeters
No bicuspids/ no 3rd molars
Bone that surrounds the root of the tooth

13. What is the function of the buccle nerve branch?
It intervates the buccal mucosa and buccal gingiva as well as the buccal of the mandibular molars
The disc becomes displaced
Supplies blood to the brain and the eyes
Permeante teeth replace the primary teeth

14. Convex
The mandibular molars
To bulge of curve outward
Forming organ takes shape and resembles the shape of a bell
Set of arches found farther in the back of the throat

15. How many cusps/ roots do the 2/3rd maxillary molars have?
Drains the superficial veins of the face and neck into the subclavian vein
Band of fibrous tissue which attaches bone to bone
Three cusps/ trifurcated
The crown of the tooth that is nearest the incisal edge near the anterior tooth

16. Fimbriated Folds
Retracts or depresses the tongue
9 months (5 months ultrasound to tell sex)
Enamel is thinner - pulp chamber is smaller -
Folds of tissue to the the lingual veins

17. What are the 3 branches of the pterygopalatine nerve branch?
Aid in attaching the gingiva to the alveolar bone
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Triangular space in the gingival direction when two adjacent teeth are in contact
Greater - lesser - naso palatine nerves

18. Xygote
When cells rapidly increase in number
When the surface of the teeth becomes grooved
An enclosed area that matures into dentin - cementum and pulp
A duct that empties into the mouth thru the parotid papilla - Parotid gland goes with Stensen's duct

19. Lines of Retzius
Portion of the lips that are red
Study of prenatal growth and the developing process of an individual
Incremental lines around the layers of the enamel matrix
Synovial fluid

20. What are the intrinsical muscles of the tongue responsible for?
Outside surface Which is towards the cheek - on posterior teeth
Shaping the tongue during speech - mastication and swallowing
The outer edge of the nostril
Bone that surrounds the root of the tooth

21. Anomalies
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Two weeks thru 8th week
Extreme variations from the norm
Forming organ takes shape and resembles the shape of a bell

22. Buckle groove
A projection that extends off the back of the soft palate
Covers muscle tissue in the posterior portion of the palate
Convex area on the lingual surface near gingiva
Depression forming a groove that sends from the middle of the buckle surface to the occlusal surface of the tooth

23. Mastoid process
Supplies blood to the temporal muscle - masseter muscle - pterygoid muscle and buccanator
Hair-like projections anterior to the circumvallate papillae and covering the dorsal side of the tongue
Portion covered with cementum
Bony projection found on the bottom border of the temporal bone

24. Function of Hyoglossus
Raised vertical folds of tissue on the lateral border of the tongue
Small grooves noted on some teeth
Depresses the tongue
Pointed elongations of the pulp

25. Circumvallate Papillae
The tip of the chin
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Forming organ takes shape and resembles the shape of a bell
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10

26. External Carotid Artery
Molaris meaning millstone
Supplies blood to the face and oral cavity
Occlusal surface of the posterior tooth
Teeth will not erupt in proper position

27. Gingival Sulcus
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Small dark brushes
A triangular area located behind the last molar
The space between the unattached gingiva and the tooth

28. What is the purpose of saliva?
Peg shaped crown with a smooth surface
To lubricate the oral cavity and to moisten food
The development of different tissues
Acts as anchors between the alveolar bone and the tooth

29. Interradicular Septum
The groove below the lower lips that separates the lips from the chin
Separates the developing oral cavities from the nasal cavities
The mandibular molars
The bone that separates the root on a tooth

30. What are the characteristics of deciduous teeth?
Portion of the root seen in the oral cavity
Causes a thickening of the cementum around the apex
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

31. Ectoderm
Mildest form of cleft palate
The mandibular molars
Opening for the ear
Forms into the inner lining of the oral cavitiy and enamel of the teeth

32. Maxillary Nerve Branch
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A small projection in the middle of the upper lip
The tip of the chin
A sensory nerve that ennervates the nose - cheeks - palate - gingiva - maxillary teeth - maxillary sinus - tonsils and nasal pharynx

33. Midline
Cheek bones--the most breakable bone in the body
Clear fluid secreted by the salivary and mucous glands throughout the mouth
Middle line of the teeth
Surface away from the midline

34. Purpose of premolars
A period of both primary teeth and permeant teeth are in the dentition
Used to pulverize food
Aid in attaching the gingiva to the alveolar bone
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider

35. Distal
Outside surface Which is towards the lips
Surface away from the midline
Biting edge of the teeth
Oval depression of temporal bone in condyloid process

36. Dentoperiosteal Fiber Groups
Retracts the tongue and raises the tip of the tongue
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Supportive fibers that anchor the tooth to the bone
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

37. External Auditory Meatus
Folds of tissue to the the lingual veins
Opening for the ear
Divides the crown and the root
Lift the hyoid bone and assist in opening the mouth

38. Histology
A raised area of tissue laying behind the maxillary central incisors on the hard palate
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Wings of the sphenoid bone
The study of the microscopic structure and functions of tissues

39. Alveologingival Fiber Groups
A raised area of tissue laying behind the maxillary central incisors on the hard palate
Digstric - Mylohyoid - stylohyoid - geniohyoid
Chewing and swallowing food
Aid in attaching the gingiva to the alveolar bone

40. Gingival Groove
Extends from the mucogingival junction to the gingival groove
The line of demarcation between the attached gingiva and the marginal gingiva
Set of arches found farther in the back of the throat
Formed by the fibroblast cells and secures the tooth in the socket

41. Mesenchyme Tissue
Primary embryonic mesoderm layer that develops during the morpho differentiation period
Resists intrusive forces that try to push the tooth inwards
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

42. Intertubular Dentin
Dentin found between the tubules
The line of demarcation between the attached gingiva and the marginal gingiva
The disc becomes displaced
Looking at the border of the tongue

43. Tubercle of the Lip
Portion of the lips where the skin meets the vermilion zone
Canal or passage for fluid
A small projection in the middle of the upper lip
A raised white line that runs parallel to where the teeth meet on the buccal mucosa

44. Embrasure
A junction or center of veins that directly or indirectly drain a vast area
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth
Triangular space in the gingival direction when two adjacent teeth are in contact

45. Torus
Biting edge of the teeth
Act to maintain the gingival integrity of the marginal gingiva
Excess bone in the middle of the palate
Respiratory system - digestive system and glandular organs

46. Mandibular Artery
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Middle two teeth in the mouth
Located behind the ramus of the mandible and branches into five arteries
Lower arch of the teeth

47. Anatomical root
Portion covered with cementum
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Where the proximal sides of two teeth come together and touch
Arteries supplying blood to most of the head and the neck

48. Maxillary Artery
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate
Folds of tissue to the the lingual veins
Largest facial bone with two sections joined at the median suture
Largest of the branches of the external carotid artery; supplies facial structure

49. Lacrimal Bones
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Anterior to the ethmoid bone and part of the orbit (corners of the eye)
The outer edge of the nostril
Palatoglossus - palatopharyngeal

50. Internal Carotid Artery
Supplies blood to the brain and the eyes
Compact bone plate of the facial and lingual surfaces
Disk that acts like a cushion between the temporal bone and the condyloid process
Bone that surrounds the root of the tooth