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1m. Head & Neck Anatomy > L92: Cranial Nerves > Flashcards

L92: Cranial Nerves Flashcards

1
Q

How many pairs of cranial nerves are there?

A

12

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2
Q

Name the cranial nerves.

A
  1. Olfactory
  2. Optic
  3. Oculomotor
  4. Trochlear
  5. Trigeminal
  6. Abducens
  7. Facial
  8. Vestibulocochlear
  9. Glossopharyngeal
  10. Vagus
  11. (spinal) Accessory
  12. Hypoglossal
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3
Q

What are the three functions of cranial nerves?

A
  • Sensory;
  • Motor to involuntary muscles;
  • Motor to voluntary muscles.
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4
Q

What are the three sensory only cranial nerves?

A

Olfactory, optic and vestibulocochlear

OOV

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5
Q

What are the four mixed only cranial nerves?

A

Trigeminal, facial, glossopharyngeal, vagus

GTFV

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6
Q

What are the five motor cranial nerves?

A

Oculomotor, trochlear, abducens, accessory and hypoglossal

OTAAH

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7
Q

What type of cranial nerve is CNV, trigeminal?

A

Mixed - sensory and motor

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8
Q

What type of cranial nerve is CNVII, facial?

A

Mixed - sensory and motor

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9
Q

What type of cranial nerve is CNIV, glossopharyngeal?

A

Mixed - sensory and motor

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10
Q

What type of cranial nerve is CNV, vagus?

A

Mixed - sensory and motor

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11
Q

What type of cranial nerve is CNVII, hypoglossal?

A

Motor

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12
Q

What are the divisions of cranial nerve CNV, trigeminal?

A
  • 1/a: Ophthalmic;
  • 2/b: Maxillary;
  • 3/c: Mandibular.
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13
Q

What is the function of CNV, 1?

A
  • General sensory (touch, pain, temp.);

- Sensation from forehead and down the nose (nasal cavities too).

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14
Q

What is the function of CNV, 2?

A
  • General sensory (touch, pain, temp.);

- Sensation from maxillary teeth, upper lip and maxilla area.

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15
Q

What is the function of CNV, 3?

A
  • General sensory (touch, pain, temp.);
  • Sensation from mandibular teeth, lower lip, sides of mandible, oral mucosa and anterior 2/3 of tongue;
  • Branchial motor: muscles of mastication.
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16
Q

What specific branch of CNV3 innervates the mandibular teeth?

A

Inferior alveolar nerve

17
Q

What specific branch of CNV2 innervates the maxillary teeth?

A

Superior alveolar nerve

18
Q

Which cranial nerve goes through the parotid gland, but does not innervate it?

A

Facial nerve, CNVII

19
Q

What is the function of CNVII, facial nerve?

A
  • Branchial motor: muscles of expression;
  • Visceral motor: P/S to submandibular and sublingual glands (and other facial glands - nose and mouth);
  • Special sensory: taste to anterior 2/3 of tongue.
20
Q

What is the clinical test for innervation of the facial nerve?

A

Raise eyebrows, screw eyes, blow out cheeks

21
Q

What is the function of CNIX, glossopharyngeal nerve?

A
  • Somatic motor: sytlopharyngeus;
  • Visceral motor: P/S to parotid gland;
  • Visceral sensory: parotid gland, pharynx, middle ear;
  • Special sensory: posterior 1/3 of tongue;
  • Somatic sensory: external ear.
22
Q

What is the innervation to the major salivary glands?

A
  • Parotid: CNIX;

- Submandibular and sublingual: CNVII.

23
Q

What two cranial nerves innervate the pharynx and larynx?

A

CNIX and CNX

24
Q

What is the function of CNX, vagus nerve?

A
  • Somatic motor: muscles of palate, muscles of pharynx and larynx, muscles in upper 2/3 of oesophagus;
  • Visceral motor: P/S to trachea, bronchi, GIT and heart;
  • Visceral sensory: tongue, larynx, respiratory tract, heart, upper GI to left colic flexure;
  • Special sensory: epiglottis and palate;
  • General sensory.
25
Q

What is the motor innervation to the sternocleidomastoid and trapezius?

A

CNXI, accessory nerve

26
Q

What is the function of CNXII, hypoglossal nerve?

A

Somatic motor: muscles of tongue

27
Q

What is the function of CNXII, hypoglossal nerve?

A

Somatic motor: muscles of tongue

except palatoglossus

28
Q

What does somatic motor mean?

A

Not from pharyngeal arches, to voluntary

29
Q

What does branchial motor mean?

A

From pharyngeal arches

30
Q

What does visceral sensory/ motor mean?

A

To/ from involuntary (organs)

1m. Head & Neck Anatomy (5 decks)

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