Deep Neck

Question 1

What is the innervation for rectus capitis?

Answer 1

branches from C1 and C2

Question 2

What is the innervation for splenius capitis?

Answer 2

posterior rami of middle cervical spinal nerves

Question 3

What is the innervation for levator scapulae?

Answer 3

dorsal scapular nerve C5 and cervical spinale nerves C3 and C4

Question 4

What is the innervation for middle scalene?

Answer 4

anterior rami of cervical spinal nerves

Question 5

What is the innervation for posterior scalene?

Answer 5

anterior rami of cervical spinal nerves C7 and C8

Question 6

What is the main action of the rectus capitis lateralis?

Answer 6

flexes head and helps stabilize it

Question 7

What is the main action of the splenius capitis?

Answer 7

laterally flexes and rotates head and neck to same side; acting bilaterally extend head and neck

Question 8

What is the main action of the levator scapulae?

Answer 8

downward rotation of scapular and tilts its glenoid cavity inferiorly by rotating scapula

Question 9

What is the main action of the middle scalene?

Answer 9

flexes neck laterally; elevates 1st rib during forced inspiration

Question 10

What is the main action of the posterior scalene?

Answer 10

flexes neck laterally; elevates 2nd rib during forced inspiration

Question 11

What is the innervation for the longus colli?

Answer 11

anterior rami of C2-C6 spinal nerve

Question 12

What is the innervation for the longus capitis?

Answer 12

anterior rami of C1-C3 spinal nerves

Question 13

What is the innervation for the rectus capitis anterior?

Answer 13

branches from loop between C1 and C2 spinal nerves

Question 14

What is the innervation for the anterior scalene?

Answer 14

cervical spinal nerves C4-C6

Question 15

What is the main action of the longus colli?

Answer 15

flexes neck with rotation to opposite side if acting unilateral

Question 16

What is the main action of the longus capitis, rectus capitis anterior, and anterior scalene?

Answer 16

flex head

Question 17

What is the innervation for the cricothyroid?

Answer 17

external laryngela nerve (CN X)

Question 18

What is the innervation for the thyro-arytenoid, posterior crico-arytenoid, lateral crico-arytenoid, transverse and oblique arytenoids, and vocalis?

Answer 18

inferior laryngeal nerve from CN X

Question 19

What is the main action of the cricothyroid?

Answer 19

stretches and tenses vocal ligament

Question 20

What is the main action of the thyro-arytenoid?

Answer 20

relaxes vocal ligament

Question 21

What is the main action of the posterior crico-arytenoid?

Answer 21

abducts vocal folds

Question 22

What is the main action of the lateral crico-arytenoid?

Answer 22

adducts vocal folds

Question 23

What is the main action of the transverse and oblique arytenoids?

Answer 23

adduct arytenoid cartilages

Question 24

What is the main action of vocalis?

Answer 24

relaxes posterior vocal ligament while maintaining tensio of anterior part

Question 25

What is the main action of the superior pharyngeal constrictor, middle pharyngeal constrictor, and inferior pharyngeal constrictor?

Answer 25

constrict walls of pharynx during swallowing

Question 26

What is the main action of the palatopharyngeus, salpingo-pharyngeus, and stylopharyngeus?

Answer 26

elevate pharynx and larynx during swallowing and speaking

Question 27

What is the innervation for the superior pharyngeal constrictor?

Answer 27

pharyngeal branch of vagus (CN X) and pharyngeal plexus

Question 28

What is the innervation for the middle pharyngeal constrictor and inferior pharyngeal constrictor?

Answer 28

pharyngeal branch of vagus (CN X)

Question 29

What is the innervation for the palatopharyngeus and the stalpingo-pharyngues?

Answer 29

pharyngeal branch of vagus (CN X)

Question 30

What is the innervation for the stylopharyngeus?

Answer 30

gossopharyngeal nerve (CN IX)