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Anatomy 205 > Oral Cavity: Tongue > Flashcards

Oral Cavity: Tongue Flashcards

1
Q

Definition

A

Muscular mass invested by mucous membrane

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2
Q

Parts

A
  1. Tip
  2. Root
  3. Margins
  4. 2 surfaces
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3
Q

Surfaces

A
  1. Lower (ventral) surface
  2. Upper (dorsal) surafce
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4
Q

Lower surface

A

Smooth and related to mouth floor shows:
1. Frenulum linguae
2. Deep lingual vein
3. Fimbriated ridge

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5
Q

Frenulum linguae

A

Mucous membrane raised ridge connecting tongue and mouth floor ending posterior by sublingual papillae

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6
Q

Deep lingual vein

A

On each side of frenulum, extending backwards from tongue tip

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7
Q

Fimbrated ridge

A

Lateral to deep lingual vein

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8
Q

Fimbrated ridge

A

Lateral to deep lingual vein

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9
Q

Upper surface

A

Rough (lingual papillae) divided by V-shaped groove (sulcus terminalis) into 2 parts:
1. Anterior 2/3 (oral part)
2. Posterior 1/3 (pharyngeal part)

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10
Q

Oral part

A
  1. Lies in mouth cavity
  2. Directed upwards
  3. Contains lingual papillae:
    - vallate
    - fungiform
    - foliate
    All contain taste buds except filiform
  4. 2 sensory nerves:
    - lingual
    - chorda tympani
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11
Q

Pharyngeal part

A
  1. Lies in Oropharynx
  2. Directed backwards
  3. Contains lingual tonsil (lymph mass in submucosa)
  4. 1 sensory nerve:
    - Glossopharyngeal
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12
Q

Muscles

A
  1. Extrinsic
  2. Intrinsic
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13
Q

Extrinsic muscles

A
  1. Styloglossus
  2. Genioglossus
  3. Palatoglossus
  4. Hyoglossus
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14
Q

Intrinsic muscles

A
  1. Superior longitudinal
  2. Inferior longitudinal
  3. Transverse
  4. Vertical
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15
Q

Styloglossus origin

A

Styloid process tip

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16
Q

Styloglossus action

A

Retracts tongue

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17
Q

Genioglossus origin

A

From upper genial tubercle

18
Q

Genioglossus action

A

Protrudes tongue

19
Q

Palatoglossus origin

A

Palatine aponeurosis

20
Q

Palatoglossus action

A

Elevates tongue

21
Q

Hyoglossus origin

A

Hyoid bone

22
Q

Hyoglossus action

A

Depresses tongue

23
Q

Intrinsic muscle

A

They change shape of tongue turning its tip upwards or downwards and folding its borders

24
Q

Nerve supply

A
  1. Motor
  2. Sensory
25
Q

Motor

A

All muscles (extrinsic and intrinsic) are supplied by hypoglossal nerve except Palatoglossus by pharyngeal plexus (cranial root of accessory via pharyngeal branch of vagus)

26
Q

Sensory

A

Anterior 2/3:
1. Lingual nerve
2. Chorda tympani
Posterior 1/3:
1. Glossopharyngeal nerve
Root: in front of epiglottis
1. Internal laryngeal nerve (vagus nerve)

27
Q

Lingual nerve

A

For general sensation

28
Q

Chorda tympani

A

For taste sensation

29
Q

Glossopharyngeal nerve

A

For general and taste sensations

30
Q

Internal laryngeal nerve

A

For general sensation

31
Q

Atrial supplu

A
  1. Deep artery of tongue (profounda linguae)
  2. 2 dorsal lingual arteries
32
Q

Profunda linguae

A

Continuation of lingual artery
Supplies:
1. Tongue anterior part and tip
Anastomoses with opposite artery at tip

33
Q

Dorsal lingual arteries

A

From 2nd part lingual artery
Supplies:
1. Tongue posterior part

34
Q

Venous drainage

A
  1. Deep lingual vein
  2. Lingual artery venae comitants
35
Q

Deep lingual vein

A
  1. Extends from tongue tip backwards on lower surface muslsa
  2. Joined by sublingual vein forming vena comitants of hypoglossal nerve
  3. Runs superficial to Hyoglossus ending in lingual vein
  4. End in IJV
36
Q

Lingual artery venae comitants

A

Runs deep to hypoglossus receiving 2 dorsal lingual veins ending in lingual vein

37
Q

Lymph drainage

A

Anterior 2/3:
1. Tip and frenulum
2. Margins
3. Central part
Posterior 1/3

38
Q

Tip and frenulum

A

Submental nodes

39
Q

Margins

A
  1. Submandibular node
  2. Jugulodigastric node
  3. Jugulo-omohyoid node
    on the same side
40
Q

Central part

A
  1. Submandibular node
  2. Jugulodigastric node
  3. Jugulodigastric-omohyoid node
    On both sides of the
41
Q

Posterior 1/3

A

Jugulodigastric and Jugulodigastric-omohyoid nodes on the same side in case of margins and on both sides and in case of central part

Anatomy 205 (197 decks)

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