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Digestive > Oral Cavity > Flashcards

Oral Cavity Flashcards

1
Q

Name the 2 parts of the gum

A

Marginal or Free gingiva and attached gingiva

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2
Q

Which nerve supplies the upper gum?

A

Superior alveolar nerve (labial aspect)

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3
Q

Which aspect of the gum does the nasopalatine and lingual nerves supply?

A

Lingual aspect

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4
Q

Which nerves supply the lower gum?

A

Mandibular and mental nerves

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5
Q

State the 3 parts of the teeth

A

Crown, Neck and Root

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6
Q

Describe the structure of a tooth

A

Pulp- centre
Dentine_ surrounds pulp
Enamel- surrounds denting
Cementum- calcified connective tissue covering surface if the root and provides medium for periodontal ligament fibres
Periodontal membrane- fleshy tissue between tooth and tooth socket

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7
Q

State the types of teeth and there functions

A

Incisors- cutting teeth
Canines- holding and tearing teeth
Premolars- bicuspid tooth
Molars- grinding teeth

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8
Q

Timeliness for the eruption of permanent teeth

A

First Molar- 6 years
Medial Incisors- 7 years
Lateral Incisors- 8 years
First premolar- 9 years
Second premolar- 10 years
Canines- 11 years
Second molar- 12 years
Third molar- 17-25 years (wisdom)

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9
Q

Which nerves supply the upper teeth?

A

Post, Middle and Anterior Superior Alveolar Nerve

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10
Q

Which nerve supplies the lower teeth

A

Incisive nerve which is a branch of the inferior alveolar nerve

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11
Q

State the boundaries of the Oral Cavity Proper

A

Anterolaterally- Teeth and gums
Roof - Hard and soft palate
Floor- Tongue
Anteroinferiorly - Sublingual region
Posteriorly- Oropharyngeal isthmus
Lymphatic Drainage

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12
Q

Name the 2 parts of the palate

A

Hard and soft palate

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13
Q

What does the hard palate partition

A

Nasal and oral cavity

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14
Q

Name the 2 divisions of the oral cavity and their divisions

A

Vestibule- Lips , cheek, teeth
Oral Cavity Proper- Tongue, Hard palate, Soft palate

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15
Q

Name the boundaries of the vestibule

A

Anteriorly- Lips
Posteriorly- Teeth
Laterally- cheeks

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16
Q

Which duct and glands ae found in the lateral border of the vestibule

A

Parotid gland aka Stenson Duct
Labial gland
Buccal gland

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17
Q

The teeth is lined by mucous membrane; True or False?

A

True (except the teeth)

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18
Q

What is the obicularis oris

A

Orbicularis oris is a complex circular muscle that surrounds the orifice of the mouth and forms the majority of the lips. It belongs to a large group of muscles of facial expression called the buccolabial group.

Action
Closes mouth, compresses and protrudes lips

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19
Q

Epithelium of the skin

A

Keratinized stratified squamous epithelium

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20
Q

Epithelium on the interior aspect of the lip

A

Non-keratinized stratified squamous epithelium

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21
Q

The superior vermillion border is the same as the transitional zone; True or False

A

True

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22
Q

The superior alveolar nerve is a branch of which nerve?

A

Maxillary nerve

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23
Q

The inferior alveolar nerve comes from which nerve

A

Mandibular nerve

24
Q

Which nerve does the mental nerve arise from

A

Inferior alveolar nerve

25
Q

Posterior superior alveolar nerve supplies what?

A

Upper teeth

26
Q

In each quadrant of the teeth you have?

A

3 molars
2 premolars
1 canine
2 incisors ( central and lateral)

27
Q

What does hard palate separate?

A

It is the partition between the nasal and oral cavity

28
Q

Margins of the hard palate

A

Anterolateral margin- gum
Posterior margin- soft palate
Superior surface- Floor of nasal cavity
Inferior surface- Roof of oral cavity

29
Q

What is the blood supply, vein and nerve of the hard palate

A

Blood supply- Greater palatine branch of maxillary artery
Veins– Pterygoid plexus of veins
Nerves- Pterygoid ganglion

30
Q

Soft palate separates what

A

Separates nasopharynx from oropharynx

31
Q

List the 5 muscles of the soft palate

A

Tensor veli palatini
Levator veli palatini
musculus uvulae
Palatoglossus
Palatopharyngeus

32
Q

Name the origin, insertion and actions of the Tensor veli palatini

A

Origin- Auditory tube, base of skull
Insertion- posterior part of hard palate

Action- tightens the soft palate
opens the auditory tube, equalizes the pressure between middle ear and nasopharynx

33
Q

Name the origin, insertion and actions of the Levator veli palatini

A

Origin- Inferior aspect of auditory tube, Inferior aspect of petrous temporal bone

Insertion- Palatine aponeurosis

Action- Elevates soft palate, Open the auditory tube

34
Q

Name the origin, insertion and actions of the Palatopharyngeus

A

Palatopharyngeus muscle is separated in an anterior and posterior fasiculus

Origin: Anterior Fasiculus- Posterior part of hard palate

Posterior Fasiculus- palatine aponeurosis

Insertion- Lamina of thyroid gland

Actions- Pulls up the wall of the pharynx
shortens it during swallowing

35
Q

Name the origin, insertion and actions of the Musculus Uvulae

A

Origin- Posterior nasal spine
Palatine aponeurosis

Insertion- Mucous membrane of uvula

Action- Pulls up the uvula

36
Q

Name the origin, insertion and actions of the Palatoglossus

A

Origin- Oral surface of palatine aponeurosis

Insertion- Side of the tongue

Actions- Pulls up the root of the tongue
Approximates the palatoglossal arches
Closing of the oropharyngeal isthmus

37
Q

Nerve supply for the muscles of the soft palate

A

Tensor veli palatini- Mandibular nerve (exception)

All other muscles are innervated by:
Pharyngeal plexus of nerves
General sensory nerves- Middle and posterior palatine nerves
Special Sensory- Lesser palatine nerves

38
Q

What is the blood supply to the muscles of the soft palate

A

Greater palatine branch of maxillary artery
Ascending palatine artery
Palatine branch of ascending pharyngeal artery

39
Q

What is the venous drainage for the muscles of the soft palate

A

Pterygoid and Tonsillar Plexus

40
Q

What muscles are involved in the Passavant’s Ridge

A

Palatopharyngeal and Superior Constrictor Muscle.

41
Q

List the functions of the Passavants ridge

A
  1. Isolates mouth from oropharynx
  2. Separates nasopharynx from oropharynx during coughing and sneezing
42
Q

List the parts of the tongue

A

Root
Tip/Apex
Body
Dorsum- Oral and pharyngeal parts

43
Q

List the types of papillae of the tongue

A

Circumvallate papillae
Fungiform
Filliform
Foliate

44
Q

List the intrinsic muscles of the tongue.

A

Superior longitudinal
Inferior longitudinal
Transverse
Vertical
Aka VITS

45
Q

List the extrinsic muscles of the tongue

A

Genioglossus
Hyloglossus
Styloglossus
Palatoglossus

46
Q

Which artery supplies the tongue

A

Lingual artery;
N.B- Root of the tongue is supplied by the tonsillar and ascending pharyngeal arteries

47
Q
A
48
Q

Venous drainage of the tongue

A

Deep lingual vein
Lingual vein
Common facial vein or Internal jugular vein

49
Q

Lymphatics do not accompany blood vessels in the tongue ; True or False?

A

True

50
Q

Sate the lymphatic drainage of the tongue

A

Tip of the tongue- Submental nodes
Anterior 2/3 of the tongue- Submandibular nodes
Posterior 1/3 of the tongue- Jugulo-omohyoid nodes

51
Q

Nerve supply to the tongue

A

Motor nerve supply- Hypoglossal nerve
Cranial root of accessory nerve through the pharyngeal plexus

Sensory nerves-
Ant 2/3- Lingual and chordatympani nerve

Post. 1/3- Glossopharyngeal nerve

52
Q

Which muscle causes paralysis of the tongue if paralyzed

A

Genioglossus

53
Q

Which nerve causes paralysis to the tongue if injured

A

Hypoglossal nerve

54
Q

What does the sublingual region of the tongue consist of

A

Frenulum of the tongue
Sublingual papilla
Sublingual fold
Lymphatics

55
Q

List some anamolies of the tongue

A

Ankyloglossia- Tongue tie (Sublingual frenulum attached at the tip of the tongue)
Macroglossia
Microglossia
Bifid tongue (in the name)

56
Q
A

Digestive (16 decks)

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