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Phase 2 4. Neurology > Anatomy of the oral cavity > Flashcards

Anatomy of the oral cavity Flashcards

1
Q

What is the oral vestibule?

A

The space between the teeth and the lips or cheeks

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2
Q

What is the oral cavity proper?

A

The area internal to the teeth and gums

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3
Q

What are the features of the oral cavity?

A
  • Hard and soft palates
  • Teeth
  • Gums
  • Tongue
  • Saivary glands
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4
Q

What structures can be found within the oral mucosa?

A

Numerous minor salivary glands that secrete directly into the oral cavity

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5
Q

What lymphoid tissue can be found within the oral cavity?

A

Paired palatine tonsils lie between the palatoglossal and palatopharyngeal folds

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6
Q

What are the two groups of muscles within the tongue?

A
  • Intrinsic

- Extrinsic

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7
Q

What is the innervation of the intrinsic muscles of the tongue?

A

The hypoglossal nerve (CN XII)

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8
Q

Name the intrinsic muscles of the tongue

A
  • Superior longitudinal
  • inferior lonitudinal
  • Transverse
  • Vertical
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9
Q

Name the extrinsic muscles of the tongue

A
  • Genioglossus muscle
  • Hypoglossus muscle
  • Styloglossus muscle
  • Palatoglossus muscle (also considered a muscle of the palate)
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10
Q

What is the origin of the genioglossus muscle?

A

The mental spine of the mandible

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11
Q

Where does the genioglossus muscle insert?

A

The dorsum of the tongue and hyoid bone

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12
Q

What is the innervation of the genioglossus muscle?

A

The hypoglossal nerve (CN XII)

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13
Q

What is the main action of the genioglossus muscle?

A

Depresses and protrudes the tongue

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14
Q

What is the origin of the hyoglossus muscle?

A

Body and greater horn of hyoid bone

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15
Q

Where does the hyoglossus muscle insert?

A

The lateral and inferior aspect of the tongue

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16
Q

What is the innervation of the hyoglossus muscle?

A

The hypoglossal nerve (CNXII)

17
Q

What is the main action of the hyoglossus muscle?

A

Depresses and retracts the tongue

18
Q

What is the origin of the styloglossus muscle?

A

The styloid process and stylohyoid ligament

19
Q

Where does the styloglossus muscle insert?

A

The lateral and inferior aspect of the tongue

20
Q

What is the innervation of the styloglossus muscle?

A

The hypoglossal nerve (CNXII)

21
Q

What is the main action of the styloglossus muscle?

A

Retracts the tongue and draws it up for swallowing

22
Q

What is the origin of the palatoglossus muscle?

A

The palatine aponeurosis of the soft palate

23
Q

Where does the palatoglossus muscle insert?

A

The lateral aspect of the tongue

24
Q

What is the innervation of the palatoglossus muscle?

A

The vagus nerve and the pharyngeal pleaxus

25
Q

What is the main action of the palatoglossus muscle?

A

Elevates the posterior tongue

26
Q

What are the four types of lingual papillae?

A
  • Filiform
  • Fungiform
  • Circumvallate
  • Foliate
27
Q

What is the filiform?

A

Numerous slender projections that lack taste buds

Give the tongue its rough feel

28
Q

What is the fungiform?

A

Larger mushroom shaped papillae (may appear as red caps) scattered on the dorsim of the tongues surface. Contains taste buds

29
Q

What is the circumvallate?

A

Larger papillae that lie in a row just anterior to the sulcus terminalis. Contains tastebuds

30
Q

What is the foliate?

A

The papillae that lie along the sides of the tongue and are rudimentary in humans. Posess taste buds

31
Q

What are the major salivary glands?

A
  • Parotid
  • Submandibular
  • Sublingual
32
Q

What type of gland is the submandibular gland?

A

Sermucous gland

33
Q

What is the innervation of the submandibular gland?

A

CNVII (facial) parasympathetics

34
Q

What type of gland is the sublingual gland?

A

Mucous gland

35
Q

What is the sublingual gland innervated by?

A

CNVII (facial) parasympathetics

Phase 2 4. Neurology (29 decks)

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