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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. Incisive Nerve branch
Developmental segment of a tooth
Intervating the anterior teeth and the labial gingiva
No bicuspids/ no 3rd molars
Inside surface Which is towards the tongue - on anterior teeth

2. What are the two ways the TMJs move?
Tissue covering the alveolar processes
Hinge motion and gliding movement
Incremental lines around the layers of the enamel matrix
Two weeks thru 8th week

3. Horizontal Fiber Group
Functions the same as the alveolar cfg; originate in alveolar bone
Also known as meniscus it is a dense fibrous connective tissue that is thicker at the ends and attached to the condyle
Composed of mucosa and surrounds the necks of the teeth
When the surface of the teeth becomes grooved

4. What are the two muscles of the soft palate?
Divides the crown and the root
Palatoglossus - palatopharyngeal
Small bony projections surrounding the lingual foramen
A faint line going from the ala of the nose to the corner of the mouth

5. Purpose of premolars
Platysma - trapezius - sternocleidomastoid
Used to pulverize food
Retracts the tongue and raises the tip of the tongue
Buccal - lingual - and inferior alveolar

6. Transverse Ridge
Union of two triangular ridges that produce a single ridge of elevation that cross the occlusal surface of posterior teeth
Largest division of the trigeminal nerve
The connective tissue of the marginal gingiva
Pulls the hyoid bone and the tongue anteriorly

7. Sublingual Caruncles
2 small raised folds of tissue where the lingual frenum attaches
9 months (5 months ultrasound to tell sex)
Compact bone plate of the facial and lingual surfaces
Bifurcated/ 5 cusps

8. Retro Mandibular Vein
Drains the facial structures beginning near the eye and descending toward the mandible
Drains the maxiallary artery and superficial temporal arteries
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Teeth will not erupt in proper position

9. How many teeth are in the permanent set of teeth?
Corners of the mouth
Week 12
32
Causes a thickening of the cementum around the apex

10. Histology
The first predentin that is formed and matures within the tube
Small curved lines that run parellel to the CEJ
Forms a large cavity above the roots of the maxillary molars
The study of the microscopic structure and functions of tissues

11. Posterior Tonsillar Pillar
1500 millimeters
Set of arches found farther in the back of the throat
To dissolve
Band of fibrous tissue which attaches bone to bone

12. What is the maxillary cuspid known as?
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Responsible for laying down the enamel matrix into place
The cornerstone of the mouth
Calcium salts are deposited into formed tooth

13. Alveologingival Fiber Groups
A projection that extends off the back of the soft palate
Aid in attaching the gingiva to the alveolar bone
Synovial fluid
When the surface of the teeth becomes grooved

14. Mental Artery
Place where the groove comes together or fissures cross
Found near the cementoenamel junction
Exits the mandibular canal at the mental foramen and supplies the chin and lower lip
4 cusps/ bifurcated

15. Lingual Frenum
Functions the same as the alveolar cfg; originate in alveolar bone
Supplies the mylohyoid muscle and the anterior belly of the digastric muscle
A line of tissue that extends from the tongue to the floor of the mouth
A bony projection that separates each socket

16. Philtrum
Vertical groove on the midline of the upper lip
Biting edge of the teeth
Papillae that give the tongue the strawberry effect
The internal surface at the center of the mandible

17. Lesser Palatine Foramen
Lower arch of the teeth
Supplies blood to the face and oral cavity
Pulverizing or chewing surface
Two smaller openings located behind the greater Palatine Foramen in the posterior region of the hard palate

18. How many teeth are in the Primary teeth?
20
Smaller - enamel thicker - pulp chamber is larger is larger - bifurcation wider
Largest papilla - mushroom shaped and are anterior to the sulcus terminalis in a row of 8 to 10
Portion of the root seen in the oral cavity

19. Oblique Ridge
Convex area on the lingual surface near gingiva
The line of demarcation between the attached gingiva and the marginal gingiva
Bone that surrounds the root of the tooth
Elevated area fo enamel that extends obliquely across the occlusal surface of the tooth

20. Paranasal
Molaris meaning millstone
Of or pertaining to area surrounding naval cavity
The space between the unattached gingiva and the tooth
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

21. Caruncle
The deepest point of the vestibule
Trigeminal - facial - glossopharyngeal - hypoglossal
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Fleshy elevation under the tongue

22. Odontogenesis
Elevated are of enamel that forms the Mesial and distal borders
A flap of tissue on the on the buccal mucosa
Where the proximal sides of two teeth come together and touch
Origin of the tooth

23. What are the only permeant teeth that are not succedaneous?
Molars
Indented
Biting edge of the teeth
A shallow v-shaped depression located below the bottom of the nose and above the lips

24. Odontoblast
No bicuspids/ no 3rd molars
Composed of mucosa and surrounds the necks of the teeth
Cells that form dentin
Two weeks thru 8th week

25. Function of Trapezius
Moves the head backward and laterally
Raised vertical folds of tissue on the lateral border of the tongue
Linear elevation of the tooth
An extension of an unattached gingiva and the tooth

26. 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
A line of demarcation between the attached gingiva and alveolar mucosa
The study of the microscopic structure and functions of tissues
Found only in multi-rooted teeth and resists rotational forces

27. Tubercle of the Lip
Middle two teeth in the mouth
Vestibule - vestibule fornix - labial mucosa - buccal mucosa - parotid papilla - Stenson's duct - linea alba - Fordyce's spots - alveolar mucosa - gingiva - labial frenum - buccal frenum
A small projection in the middle of the upper lip
2 to 3 pints

28. Glenoid Fossa
Oval depression of temporal bone in condyloid process
Resists intrusive forces that try to push the tooth inwards
A concave area where two bones of the mandible are fused in the center of the mandible on the external surface
Formed by the uniting of lobes during development of crown

29. How can you tell if someone has cancer by looking at the tongue?
Looking at the border of the tongue
Drains the maxiallary artery and superficial temporal arteries
Intervating the anterior teeth and the labial gingiva
Surface away from the midline

30. Marginal Ridges
Bony projection found on the bottom border of the temporal bone
Portion of the lips that are red
Draws the hyoid bone superiorly and posteriorly and stabilizes it
Elevated are of enamel that forms the Mesial and distal borders

31. Muscle origine
The fixed attachment of a muscle
Appears to be loosely attached - covering the alveolar bone.
Interdental ligament
Maxillary first molar

32. Tendon
Allow flexibility during mastication - speech
The tip of the chin
Band of fibrous tissue which attaches muscle to bone
Assist in depressing the mandible and elevating the tongue

33. Enamel Tufts
Raised lines of mucosal tissue found below the tongue - and below the top/ bottom of middle lip
Causes a thickening of the cementum around the apex
Small dark brushes
The cornerstone of the mouth

34. Hypercementosis
Causes a thickening of the cementum around the apex
Appears to be loosely attached - covering the alveolar bone.
Tubules that pass through the entire surface of the dentin
A projection that extends off the back of the soft palate

35. Angle of the Mandible
Sweet --tip of the tongue - salty--anterior sides of the tongue - sour--posterior sides of the tongue - bitter--center posterior of the tongue
Indented
No bicuspids/ no 3rd molars
Where the ramus meets the body of the mandible on the outside border

36. External Auditory Meatus
Aid in attaching the gingiva to the alveolar bone
Surface away from the midline
Opening for the ear
Hinge motion and gliding movement

37. Mental Nerve Branch
The layer of dentin that surrounds the pulp
Largest division of the trigeminal nerve
Where the ectoderm layer matures into the enamel
Portion of the lips that are red

38. Landmarks
Skeletal or soft tissue structures used as reference points in describing locations of anatomical structures or taking measurements
Tooth emerges from gum tissue and becomes visible
Supplies blood to the roots and periodontal ligaments of the molars and premolars
Moves the head backward and laterally

39. What are the 4 cranial nerves that ennervate the face and oral cavity
Cells that form cementum
Trigeminal - facial - glossopharyngeal - hypoglossal
Study of prenatal growth and the developing process of an individual
A condition where the lower frenum attachment is very short/DDS/frenectomy

40. Rami
Portions of the tooth structure that support hard and soft dental tissues and the alveolar bone
Disk that acts like a cushion between the temporal bone and the condyloid process
Elevated are of enamel that forms the Mesial and distal borders
Two vertical extensions of the mandible

41. Bud stage
Folds of tissue to the the lingual veins
Surface away from the midline
Initiation of the tooth begins
Portion covered with cementum

42. Greater Palatine Nerve
Bifurcated/ 5 cusps
Calcified masses of dentin
A bat shaped bone which forms the anterior portion of the skull
Serves the soft palate - hard palate - medial gingival and mucous membrane as far forward as the anterior teeth

43. Labial Commissures
What divides the tongue in half and runs from the base to the tip of the tongue
The corners of the mouth where the top and bottom lip meet
Greater - lesser - naso palatine nerves
Enamel is thinner - pulp chamber is smaller -

44. Mamelons
Portion covered with cementum
Three bulges on the incisal edge
Circle and tighten the gingival margin around the neck of the tooth
A projection that extends off the back of the soft palate

45. Incisive Arteries
A pocket formed by the soft tissue of cheeks and gingiva
Rounded depression on a tooth
Assists in elevating the chin
Supplies blood to the roots and periodontal ligaments of the interior teeth

46. Inferior Alveolar Artery
Two cortical bone plates that come together between each tooth
Distends the ramus - enters the mandibular foramen and bifurcates around the first premolar tooth to form the incisive and the mental arteries
Tubules that pass through the entire surface of the dentin
Dentin found between the tubules

47. Maxillary vein
Drains the Pterygoid plexus of the veins
Slight ridges on the cervical third of certain teeth that extend mesiodistally
Wearing away of the incisal or occlusal surfaces of the tooth
Calcified masses of dentin

48. Palatine Bones
What divides the tongue in half and runs from the base to the tip of the tongue
A faint line going from the ala of the nose to the corner of the mouth
Joined at the midline and are often referred to as the median Palatine suture
2 small raised folds of tissue where the lingual frenum attaches

49. Epithelial Attachment
The gingiva in the floor of the gingival sulcus that attaches to the enamel
Forms into the inner lining of the oral cavitiy and enamel of the teeth
Elevates the posterior portion of the tongue and narrows the fauces
Bone that surrounds the root of the tooth

50. Function of Hyoglossus
Formed by the uniting of lobes during development of crown
Largest facial bone with two sections joined at the median suture
Permeante teeth replace the primary teeth
Depresses the tongue