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Anatomy Decks > The tongue and salivary glands > Flashcards

The tongue and salivary glands Flashcards

1
Q

What is the tongue?

A

Musuclar organ covered by mucous membrane

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2
Q

What are the functions of the tongue?

A

Moving food during chewing

Articulation

Swallowing

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3
Q

What is the tongue divided into?

A

Anterior 2/3 and posterior 1/3 by a V shaped sulcus called the Sulcus Terminalis

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4
Q
A
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5
Q

What is the foramen caecum?

A

Its in middle of sulcus termianlis

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6
Q

What is the embryological significance of this foramen caecum?

A

It is a primitive tract between the anterior cranial fossa & nasal space. – Found in infacts before fibrous tissue fills it & ossifies

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7
Q

What is the mucous membrane of the tongue?

A

The anterior 1/3 of the dorsal surface of the tongue has surface projections of the mucous membrane that make it rough.

These are called papillae.

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8
Q

What are the 3 types of papilla?

A

Filiform

Fungiform

Valate

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9
Q

Where are taste bud not present?

A

On the filiform type of papillae

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10
Q

What are the elevations on the dorsal surface of the posterior 1/3 of the tongue has surface elevations produced by?

A

Submucosal lymphoid tissue collection

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11
Q

What are these elevations called?

A

Lingual tonsil

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12
Q

What is the inferiorsurface of the tongue covered by?

A

Smooth mucous membrane

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13
Q

Name the fold of mucous membrane that fixes the tongue to the floor of the mouth?

A

Lingual frenulum

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14
Q
A
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15
Q

What is the general sensory innervation of the anterior 2/3rds of the tongue?

A

Mandibular (V3) division of the trigmeinal ernev

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16
Q

What is the general sensory innervation of the posterior 1/3 of the tongue?

A

Glossopharyngeal (IX) nerve

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17
Q

What is the taste sensatio of the anterior 2/3rd?

A

Chorda tympani branch of the Facial nerve (Cr. N. VII)

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18
Q

What is the taste sensatio of the posterior 1/3rds?

A

Glossopharyngeal (IX) nerve

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19
Q

What are the two types of muscles of the tongue?

A
  1. Intrinsic muscles that originate and insert within the tongue
  2. Extrinsic muscles that attach from the tongue to surrounding bones or soft palate
20
Q
A
21
Q

On the sagittal section of the tongue above in which specific area are the intrinsic muscle fibres mainly concentrated?

A

Top few Cms of the tongue

22
Q

What do intrinisc muscles fibres do?

A

Control position of the tongue tip & tongue shape

23
Q

What is the attachment of the genioglossus?

A
  • Inner surface of the Mandible*
  • close to the midline*
24
Q

What is the action of the genioglossus

A

Protrudes tongue to opposite side

25
Q

What is the attachment for the hypoglossus bone?

A

Upper border of body of mandible

26
Q

What does the hypoglossus muscle do?

A

Depress tongue and retracts it

27
Q

What does the stloglossus muscle sttach to?

A

Distal styloid process (temporal bone)

28
Q

What is the action of the styloglossus muscle?

A

Retracts tongue

29
Q

What is the attachment of the palatoglossus?

A

Soft palate

30
Q

What is the action of the palatoglossus?

A

Palatal muscle and helps to narrow the oropharynx in swallowing

31
Q

When the nerve innervating the right genioglossus is damaged, (resulting in muscle paralysis, which direction would you expect the patient’s tongue to deviate if you ask them to protrude their tongue?

A

To the right

32
Q
A
33
Q

What does the hypoglossal nerve innervate?

A

All the muscles (intrinsic and extrinsic) of the tongue except one

34
Q

Which muscle attaching to the tongue in NOT innervated by the hypoglossal nerve?

A

Palatoglossus muscle – which is by CN X

35
Q

Name the 3 large paired salivary glands:

A
  1. Parotid Salivary Glands
  2. Submandibular salivary gland.
  3. Sublingual Salivary Glands
36
Q

What are the two parts of the submandibular gland?

A

Superficial lobe and Deep lobe

37
Q

Which muscle separates these superficial and deep lobe of the submandibular gland?

A

Mylohyoid muscle

38
Q

Where in relation to the floor of the mouth do the two parts of the gland lie?

A

One above so in the oral cavity & one below

39
Q

Name the artery that grooves the under surface of the submandibular salivary gland?

A

Facial artery

40
Q

Where can you see the submandibular salivary duct ?

A

Either side of the frenulum under the tongue

41
Q

Where does the submandibular salivary duct open into?

A

Under the tongue in the oral cavity – at the caruncan either side of the frenulum

42
Q

Where do the ducts of the sublingual salivary gland lie?

A

Above Myohyloid & below the floor of mouth

43
Q

What is the paeasympathetuc supply for the parotid gland?

A

Glossopharyngeal nerve

44
Q

What is the paeasympathetuc supply for the submandibular salivary gland?

A

Facial nerve

45
Q

What is the paeasympathetuc supply for the sublingual salivary gland?

A

Facial nerve

Anatomy Decks (141 decks)

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