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Dysphagia > Cranial Nerves for swallowing > Flashcards

Cranial Nerves for swallowing Flashcards

1
Q

Which CN are involved in swallowing? (6)

A 
V: Trigeminal
VII: Facial
IX: Glossopharyngeal
X: Vagas
XI: Accessory
XII: Hypoglossal
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2
Q

Trigeminal nerve (V) is what type of nerve?

A

Sensory + Motor

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3
Q

Facial nerve (VII) is what type of nerve?

A

Primarily Motor (some sensory function too)

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4
Q

Glossopharyngeal nerve (IX) is what type of nerve?

A

Sensory + Motor

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5
Q

Vagas nerve (X) is what type of nerve?

A

Sensory + Motor

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6
Q

Accessory nerve (XI) is what type of nerve?

A

Motor

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7
Q

Hypoglossal nerve (XII) is what type of nerve?

A

Motor

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8
Q

Which CN are sensory and motor? (3-4)

A

Trigeminal (V), Glossopharyngeal (IX), Vagas, (X)…………… sometimes Facial (VII) is also classed

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9
Q

Which types of CN are only motor? (2-3)

A

Accessory (XI), Hypoglossal (XII)………..sometimes faciaal (VII) is classed to

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10
Q

Sensory Functions of Trigeminal nerve (V)?

A

Pain & Tactile information from face, head, gums, teeth, hard palate, some sinuses

Tactile information from anterior 2/3 of tongue

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11
Q

Motor function of Trigeminal nerve (V)?

A

Responsible for chewing

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12
Q

Where does the motor nucleus of Trigeminal nerve (V) origniate?

A

Pons in brainstem

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13
Q

Muscles needed for chewing? (4)

A

Temporalis (temple), Masseter (Jaw), Lateral & Medial Pterygoid (cheeks)

all controlled by motor signals via Trigeminal nerve (V)

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14
Q

Motor function of Facial Nerve (VII)?

A

All facial expression and movement (lips, cheeks, forehead, motor movement round ears) & salivary glands

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15
Q

Sensory functions of Facial Nerve (VII)?

A

taste from anterior 2/3 of tongue & oropharynx

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16
Q

Type of motor commands to upper 1/2 of head from Facial nerve (VII)?

A

bilateral commands (both sides)

17
Q

Type of motor commands to lower 1/2 of head from Facial Nerve (VIII)?

A

Contralateral commands (I-side only)

18
Q

Which glands are supplied by Facial nerve (V)?

A

Salivary glands: submandibular + sublingual

Mucus Glands

19
Q

What are the 5 branches of the Facial Nerve (VII)?

A

Temporal/frontal, Zygomatic, Buccal, Mandibular, Cervical

20
Q

What muscles does the temporal branch of the facial nerve (VII) supply motor signals to (2)?

A

Orbicularis Oculi, Temporalis/Frontalis, Corrugorator Supracilii

21
Q

What muscles does the zygomatic branch of the facial nerve (VII) supply motor signals to? (1)

A

Orbicularis Occuli

22
Q

What muscles foes the buccal branch of the facial nerve (VII) supply motor signals to? (3)

A

Buccinator, Orbicularis oris, Zygomaticus

23
Q

What muscle does the Mandibular branch of the Facial Nerve (VII) support motor signals to? (1)

A

Mentalis

24
Q

What muscle does the Cervical Branch of the Facial Nerve (VII) supply motor signals to? (1)

A

Platysma

25
Q

What is the Sensory functions of the Glossopharyngeal nerve (IX)?

A

Taste from posterior 1/3 of tongue, all pharynx incl. tonsils

26
Q

What are the motor functions of the Glossopharyngeal nerve (IX)?

A

Move bolus through upper and middle pharynx (with help from Vagas)

Stimulates Carotid salvary gland

27
Q

Which cranial nerve stimulates the Stylophayneus muscle? and what does stimulation do?

A

Stimulated by Glossopharyngeal Nerve (IX) and it opens Cricopharynx

28
Q

What are the sensory functions of the Vagas Nerve (X)?

A

Orophaynx & Velum, Larynx, Layngopharynx

29
Q

What does senosry information from Vagas Nerve (X) in larynx tell us?

A

Larynx sensation including coughing

30
Q

Motor functions of the Vagas Nerve (X)?

A

Respiriation muscles, heart muscles, oesophagus muscles, Larynx and Palate

31
Q

What does the left recurrent laryngeal branch of the Vagas nerve (X) do?

A

Sends motor signals controlling movement of instrinstic laryngeal muscles (VF adduction, false VF movement etc)

32
Q

What two nerves are responsible to delivering motor signals to upper and middle pharynx?

A

Glossopharyngeal (IX) and Vagas (X)

33
Q

Important function of the Vagas signals to intrinstic laryngeal muscles?

A

Airway protection during swallowing (adduction of VFs)

34
Q

What muscles does Accessory nerve (XI) send signals to?

A

Palatophayngeus, Muscularis, Trapizius, Sternocleidomastoid

35
Q

What is the main function of the motor signals delivered by Accessory Nerve (XI)?

A

Movement of velum (& some neck movement)

36
Q

What muscles does Hypoglossal Nerve (XII) supply?

A

All muscles of the tongue (instrinic x4 paired + extrinsic x4 paired)

37
Q

Difference between instrinsic tongue muscles and extrinstic tongue muscles?

A

Instrinstic originate inside the tongue, Extrinstic originate outside the tongue

38
Q

4 pairs of extrinsic tongue muscles

A

Geniohyoids, Genioglossus’, Hyoglossus’, Styloglossus’

39
Q

4 pairs of intrinstic tongue muscles

A

Superior Longitudinals, Inferior longitudinals, Tranversus’, Vercalis’

Dysphagia (3 decks)

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