Cranial Nerves for swallowing

Question 1

Which CN are involved in swallowing? (6)

Answer 1

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

Question 2

Trigeminal nerve (V) is what type of nerve?

Answer 2

Sensory + Motor

Question 3

Facial nerve (VII) is what type of nerve?

Answer 3

Primarily Motor (some sensory function too)

Question 4

Glossopharyngeal nerve (IX) is what type of nerve?

Answer 4

Sensory + Motor

Question 5

Vagas nerve (X) is what type of nerve?

Answer 5

Sensory + Motor

Question 6

Accessory nerve (XI) is what type of nerve?

Answer 6

Motor

Question 7

Hypoglossal nerve (XII) is what type of nerve?

Answer 7

Motor

Question 8

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

Answer 8

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

Question 9

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

Answer 9

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

Question 10

Sensory Functions of Trigeminal nerve (V)?

Answer 10

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

Tactile information from anterior 2/3 of tongue

Question 11

Motor function of Trigeminal nerve (V)?

Answer 11

Responsible for chewing

Question 12

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

Answer 12

Pons in brainstem

Question 13

Muscles needed for chewing? (4)

Answer 13

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

all controlled by motor signals via Trigeminal nerve (V)

Question 14

Motor function of Facial Nerve (VII)?

Answer 14

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

Question 15

Sensory functions of Facial Nerve (VII)?

Answer 15

taste from anterior 2/3 of tongue & oropharynx

Question 16

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

Answer 16

bilateral commands (both sides)

Question 17

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

Answer 17

Contralateral commands (I-side only)

Question 18

Which glands are supplied by Facial nerve (V)?

Answer 18

Salivary glands: submandibular + sublingual

Mucus Glands

Question 19

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

Answer 19

Temporal/frontal, Zygomatic, Buccal, Mandibular, Cervical

Question 20

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

Answer 20

Orbicularis Oculi, Temporalis/Frontalis, Corrugorator Supracilii

Question 21

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

Answer 21

Orbicularis Occuli

Question 22

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

Answer 22

Buccinator, Orbicularis oris, Zygomaticus

Question 23

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

Answer 23

Mentalis

Question 24

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

Answer 24

Platysma

Question 25

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

Answer 25

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

Question 26

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

Answer 26

Move bolus through upper and middle pharynx (with help from Vagas) Stimulates Carotid salvary gland

Question 27

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

Answer 27

Stimulated by Glossopharyngeal Nerve (IX) and it opens Cricopharynx

Question 28

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

Answer 28

Orophaynx & Velum, Larynx, Layngopharynx

Question 29

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

Answer 29

Larynx sensation including coughing

Question 30

Motor functions of the Vagas Nerve (X)?

Answer 30

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

Question 31

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

Answer 31

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

Question 32

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

Answer 32

Glossopharyngeal (IX) and Vagas (X)

Question 33

Important function of the Vagas signals to intrinstic laryngeal muscles?

Answer 33

Airway protection during swallowing (adduction of VFs)

Question 34

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

Answer 34

Palatophayngeus, Muscularis, Trapizius, Sternocleidomastoid

Question 35

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

Answer 35

Movement of velum (& some neck movement)

Question 36

What muscles does Hypoglossal Nerve (XII) supply?

Answer 36

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

Question 37

Difference between instrinsic tongue muscles and extrinstic tongue muscles?

Answer 37

Instrinstic originate inside the tongue, Extrinstic originate outside the tongue

Question 38

4 pairs of extrinsic tongue muscles

Answer 38

Geniohyoids, Genioglossus', Hyoglossus', Styloglossus'

Question 39

4 pairs of intrinstic tongue muscles

Answer 39

Superior Longitudinals, Inferior longitudinals, Tranversus', Vercalis'