cranial 10, 11, 12

Question 1

What is this cranial nerve called

Answer 1

Vagus nerve

Question 2

What type of fibres does the vagus nerve carry

Answer 2

GSA, GVA, SSA, GVE, GSE fibres (90% sensory; 10% motor)

Question 3

Where does the vagus nerve pass

Answer 3

jugular foramen

Question 4

Vagus is the largest

Answer 4

Largest cranial parasympathetic outflow

Question 5

It will innervate muscles of

Answer 5

Pharynx (stylopharyngeus - excp), soft palate (exc. tensor veli palatini = trigeminal branch 3)

Vagus innervates pharnyx, soft palate, larynx with 2 exceptions

Question 6

Visceral receptors include

Answer 6

aortic arch (modulation of BP); mucous membranes of pharynx, larynx, osephagus, lungs, heat, abdominal
nucleus (solitary)

Question 7

General sensory afferents

Answer 7

skin post ear, ext. aud. meatus, dura - post cran fossa (spinal nucleus of trigmeninal)

Question 8

SSA = taste = epiglottis

Answer 8

nucleus - solitary

Question 9

Lesion can cause

Answer 9

Soft palate deviation, vocal chords paralysis

Question 10

What is the 11th cranial nerve

Answer 10

Accessory

Question 11

What is its role (accessory)?

Answer 11

To innervate the muscles (somatic efferent) = sternocleidomastoid and trapzius

Question 12

Accessory will exit through the skull through the

Answer 12

Jugular foramen (exit cranial fossa)

Question 13

Access. nerve originates from

Answer 13

Roots of cervial spinal roots originate from C1-C5

Question 14

Lesion will cause

Answer 14

paralysis of SCM and trapezius

Question 15

Hypoglossal is a

Answer 15

motor nerve and innervates tongue muscles