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DMD 5222 Head and Neck 2 > Salivary glands > Flashcards

Salivary glands Flashcards

1
Q

What are the 3 major salivary glands, their saliva production, and saliva type?

A
  1. Parotid: 25%, serous saliva only 2. Sublingual: 5%, mostly mucous 3. Submandibular: 70%, mostly serous
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2
Q

Where is Von Ebner’s gland? Saliva type?

A

Base of circumvallate paillae on tongue, serous saliva.

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3
Q

What is the arterial supply of the parotid, Submandibular, and sublingual glands?

A

P: Glandular branch of superifical temporal and transverse facial. Ling: Submental branch of lingual artery Man: Glandular branch of facial

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4
Q

In general, where is the submandibular gland? Where does the superficial portion of the submandibular gland sit? Deep?

A

Hooks around posterior border of mylohyoid. Superficial=In mandibular fossa Deep=Oral cavity between hyoglossus m and mandible.

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5
Q

What is the submandibular duct called? Location? Innervation?

A

-Wharton’s duct. -Enters through sublingual papilla -Chorda tympani of VII

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6
Q

Shape of sublingual gland? What is the sublingual duct also called? Location? Innervation?

A

-Almond shaped -Bartholin’s or Rivinus ducts -Numerous small ducts along sublingual folds in the floor of oral cavity. -Innervated by chorda tympani VII

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7
Q

what structures pass through the parotid gland?

A

External Carotid Artery Retromandibular vein Facial nerve

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8
Q

What is the parotid duct also called? Location and pathway? Innervation?

A

Stensen’s duct. -In deep lobe of parotid -Pierces buccinatory -Opens into oral cavity near 2nd maxillary molar IX via otic panglion

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9
Q

what is the parasympathetic innervation of the submandibular gland and sublingual gland?

A

Same pathway innervates minor salivary glands in the oral mucosa and cavity. 1. Pre-ganglionic neuron: -Superior salivatory nucleus -CN VII exits internal acoustic meatus -Chorda tympani n. of VII exits through petrotympanic fissure. -Hitch-hikes on lingual n. of V3 2, Post-ganglionic neuron -Submandibular ganglion -Continues to hitch-hike on lingual n. of V3

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10
Q

What is the parasympathetic innervation of parotid gland?

A
  1. Pre-ganglionic neuron -Inferior salivatory nucleus -CN IX exits jugular foramen -Tympanic n. of IX, joins tympanic plexus, becomes lesser petrosal n. -Lesser petrosal n. exits foramen ovale 2. Post-ganglionic neuron -Otic ganglion -Hitch-hikes on auriculotemporal n. of V3
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11
Q

What is the arterial supply of the parotid bed?

A
  1. External Carotid A.
    - Posterior auricular
    - Maxillary
    - Superficial temporal
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12
Q

What is the venous drainage of the parotid bed?

A

-Superficial temporal -Transverse facial -Maxillary -Retromandibular -Posterior auricular

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13
Q

what is the sensory, parasympathetic, and sympathetic innervation of parotid bed?

A

Sensory=Auriculotemporal V3 Para=Otic ganglion via lesser petrosal of IX Symp=Superior cervical ganglion

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14
Q

What is a part of the external ear?

A

-Auricle -Externall acoustic meatus -Tympanic membrane

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15
Q

Helix Antihelix Concha Tragus Antitragus Intertragic notch

A
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16
Q

What is the sensory innervation of the auricle? (list)

A
  • Auriculotemporal V3
  • Auricular from X
  • Auricular from VII
  • Cervical plexus
17
Q

What is the arterial supply of external ear?

A

-Superficial temporal (ECA) -Posterior auricular (ECA) -Deep Auricular (Maxillary) -Anterior tympanic (Maxillary)

18
Q

What glands are inside the external auditory meatus?

A

Ceruminous glands.

19
Q

How many layers is the tympanic membrane? What is the innervation of outer and inner layer?

A

3 layered membrane Outer=Auriculotemporal V3 Inner= IX

20
Q

Where is the middle ear located? Air or fluid filled?

A

Petrous portion of skull. Air filled.

21
Q

Major contents of the middle ear?

A
  • malleus, incus, and stapes.
  • Stapedius muscle
  • Tensor tympani
  • VII Chorda tympani
  • IX Tympanic nerve,tympanic plexus, lesser petrossal nerve
22
Q

What are the roof and floor boundaries of middle ear?

A

Roof=Tegmen tympani (bone separating from brain) Floor= Thin bone superior to internal jugular v, Tympanic canaliculus/branch of IX

23
Q

What is the anterior wall boundary of the middle ear?

A

-Auditory tube (middle ear to nasopharynx) -Lesser petrosal n -Postganglion sympathetic fibers

24
Q

What is the posterior wall boundary of the middle ear?

A

-Stylomastoid foramen with CN VII -Mastoid antrum -Stapedius

25
Q

What is contained in the lateral wall boundary of middle ear?

A
  • Separates middle from external.
  • Tympanic membrane
  • Chorda tympani lies along this membrane
26
Q

What is in the medail wall boundary of the middle ear?

A
  • Seperates middle from inner ear
  • Promontory
  • Tympanic plexus
  • Oval window (for stapes)
  • Round window (for pressure release)
  • Tensory tympani (attached to malleus)
27
Q

what is the arterial supply of middle ear?

A

-Anterior tympanic a -Stylomastoid artery -Labryrinthine a

28
Q

What is the sensory innervation of middle ear?

A

Tympanic plexus

29
Q

What is otitis media?

A

Middle ear infection

30
Q

What is otitis externa? Also called?

A

Infection of outer ear canal. Swimmers ear.

31
Q

What is the inner ear filled with? What are the 3 parts? Connects to middle ear via what?

A

Filled with perilymph -Vestibule, semicircular canals, choclea -Oval and round window connect to middle ear.

32
Q

What does the vestibule, semicircular canals, and cochlea each do?

A

Vestibule=Acceleration/deceleration sense Semicircular= Angular/rotational sense Cochlea=Senses sound vibrations

33
Q

What structure within the cochlea contains the hair cells?

A

spiral organ of corti.

34
Q

What is contained in the medial wall of the middle ear boundary?

A
  1. Promontory: Protubrence created by choclea
  2. TYmpanic plexus
  3. Oval window: Attachement for stapes
  4. Round window: Pressure release
  5. Tensory tympani: Attached to malleus

DMD 5222 Head and Neck 2 (14 decks)

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