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602 EX 3 > Tongue & Mouth > Flashcards

Tongue & Mouth Flashcards

1
Q

What is included in the submandibular region?

A

-Submandibular and sublingual glands
-Suprahyoid muscles
-Extrinsic muscles of the tongue (genioglossus, hyoglossus, styloglossus, palatoglossus)
-Lingual and Facial arteries
-Submandibular ganglion

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2
Q

what are the suprahyoid muscles ?

A

digastric, mylohyoid, geniohyoid, stylohyoid

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3
Q

what are the extrinsic muscles of the tongue

A

genioglossus, hyoglossus, styloglossus, palatoglossus

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4
Q

what structures can you find on the inside of the mandible?

A

Mylohyoid groove
Mylohyoid line
Genial Spines/tubercles
Sublingual fossa
Digastric fossae
Submandibular fossa

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5
Q

name the numbered structures

A
  1. Mylohyoid groove
  2. Mylohyoid line
  3. Genial spines/tubercles
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6
Q

name the numbered structures

A
  1. Mylohyoid line
  2. Submandibular fossa
  3. Sublingual fossa
  4. Digastric fossae
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7
Q

what connects the hyoid to the thyroid cartilage?

A

Thyrohyoid membrane

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8
Q

where does the stylohyoid attach on the hyoid?

A

lesser horns

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9
Q

Stylohyoid
Origin:
Insertion:
Innervation:
Action:

A

Origin: posterior lateral styloid process
Insertion: body of hyoid
Inn: CN VII
Action: elevates tongue and retracts hyoid

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10
Q

Anterior belly of Digastric
Origin:
Insertion:
Innervation:
Action:

A

Origin: digastric fossa
Insertion: interediate tendon to hyoid
Inn: mylohyoid n. (V3)
Action: Elevate hyoid and depress mandible if hyoid is fixed

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11
Q

Posterior belly of Digastric
Origin:
Insertion:
Innervation:
Action:

A

Origin: Mastoid notch
Insertion: intermediate tendon to hyoid
Inn: CN VII
Action: Elevate hyoid and depress mandible if hyoid is fixed

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12
Q

Mylohyoid
Origin:
Insertion:
Innervation:
Action:

A

Origin: mylohyoid line
Insertion: hyoid and median raphe
Inn: mylohyoid n (V3 off inf alveolar)
Action: Elevate hyoid & floor of mouth and tongue, depress mandible if hyoid is fixed

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13
Q

Geniohyoid
Origin:
Insertion:
Innervation:
Action:

A

Origin: inferior genial spine
Insertion: body of hyoid
Inn: C1 via CN XII
Action: elevate hyoid with anterior translation

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14
Q

Oral portion of the tongue is the ______ and the pharyngeal portion of tongue is the ________

A

Anterior 2/3
Posterior 1/3

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15
Q

what type of muscle is the tongue made up of?

A

skeletal muscle

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16
Q

what are the structures found on the tongue?

A

Lingual tonsil
Foramen Cecum
Sulcus terminalis
Median groove

17
Q

what are the innervations of the lingual papillae?
1. Circumvallate
2. Foilate
3. Fungiform
4. Filliform

A
  1. CN IX
  2. Chorda tympani
  3. chorda tympani
  4. Lingual nerve branch of V3
18
Q

what are the intrinsic muscles of the tongue? what are their functions>

A
  1. Superior Longitudinal: shortens tongue
  2. Vertical: lowers tongue
  3. Transverse: narrows tongue
  4. Inferior Longitudinal: changes shape of the tongue in mastication and deglutition
19
Q

what supplies innervation and blood to the intrinsic muscles of the tongue?

A

Innervation: CN XII
Blood: Lingual a.

20
Q

what supplies innervation to the extrinsic muscles of the tongue?

A

mostly CN XII, one is CN X

21
Q

what are the 4 extrinsic muscles?

A

Genioglossus
Hyoglossus
Styloglossus
Palatoglossus

22
Q

Genioglossus

Action:
Attachment:
Innervation:

A

Action: protrudes and depresses tongue,
Attachment: Attaches to Superior genial tubercle
Innervation: CN XII

23
Q

Hyoglossus

Action:
Attachment:
Innervation:

A

Action: flattens and depresses tongue
Attachment: Attaches to body of greater horn of hyoid
Innervation: CN XII

24
Q

Styloglossus

Action:
Attachment:
Innervation:

A

Action: pulls tongue posteriorly and superiorly
Attachment: Attaches to Styloid process
Innervation: CN XII

25
Q

Palatoglossus:

Action:
Attachment:
Innervation:

A

Action: levates tongue
Attachment: Attaches to palatine aponeurosis of soft palate
Inn: CN X (pharyngeal branch

26
Q

What is the innervation of the tongue?
1. Motor
2. General sensory
3. Special sensory

A
  1. CN XII for all except Palatoglossus (CN X)
  2. CN V3 (Ant 2/3), CN IX (Post 1/3)
  3. Chorda tympani (Ant 2/3), CN IX (post 1/3)
27
Q

what does the epiglottis mucosa receive sensory innervation from?

A

CN X (internal laryngral)

28
Q

what is the blood supply of the tongue?

A
  • Lingual artery (Dorsal lingual, Deep lingual, sublingual)
  • Lingual veins
29
Q

___________ is the deep lingual vein which drains to internal jugular

A

Principle vein

30
Q

what is the path sympathetic fibers take to get to submandibular/lingual glands?

A

T1-T4 → lateral horn → ventral root → superior cervical ganglion → submandibular/lingual salivary gland

31
Q

what is the path parasympathetic fibers take to get to submandibular/lingual glands?

A

Lower pons Superior salivatory nucleus → Facial nerve → chorda tympani → submandibular ganglion → sublingual/mandibular salivary gland

32
Q

what are the routes of drainage for lymphatics in the tongue?
1. Tip of tongue
2. Lateral anterior 2/3
3. Medial inferior 2/3
4. Posterior 1/3

A
  1. Tip of tongue: submental nodes
  2. Lateral anterior ⅔: submandibular nodes
  3. Medial inferior ⅔: inferior deep cervical nodes
  4. Posterior ⅓: superior deep cervical nodes

602 EX 3 (8 decks)

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