Practical 1 - Innervations

Question 1

Trapezius

Answer 1

Spinal accessory nerve, C1 - C5 cord levels

Question 2

Latissimus Dorsi

Answer 2

Thoracodorsal nerve, ventral rami C6 - C8

Question 3

Levator Scapulae

Answer 3

dorsal scapular nerve, ventral ramus C5, plus vental rami C3, C4

Question 4

Rhomboid Major

Answer 4

Dorsal scapular nerve, ventral ramus C5, plus ventral ramus C4

Question 5

Rhomboid Minor

Answer 5

Dorsal scapular nerve, ventral ramus C5 plus ventral ramus C4

Question 6

Splenius Capitis

Answer 6

Dorsal rami C3-C5

Laterally flex head & rotate face to side; bilaterally extend head.

Question 7

Splenius Cervicis

Answer 7

dorsal rami C5-C7

Laterally flex & rotate neck; bilaterally extend neck.

Question 8

Iliocostalis Lumborum

Answer 8

dorsal rami lower T, all L

Extension, lateral flexion, rotation of L spine;

Question 9

Iliocostalis Thoracis

Answer 9

dorsal rami T1 - T6

Extension, lateral flexion T spine

Question 10

Iliocostalis Cervicis

Answer 10

dorsal rami T1, T2; rarely C8

Extension, lateral flexion, rotation lower C spine

Question 11

Longissimus Thoracis

Answer 11

dorsal rami T & L nerves

Lateral flexion T spine & ribs (L spine inadvertently); bilaterally act in extension of T & L spine, hold T & L spine erect (increases L lordosis); lateral movement of pelvis.

Question 12

Longissimus Cervicis

Answer 12

dorsal rami C4 - C8; T1 - T2

lateral flexion of neck; bilaterally extend neck

Question 13

Longissimus Capitis

Answer 13

dorsal rami C1 - C3, sometimes C4

rotate & laterally flex head; bilaterally extend head

Question 14

Spinalis Thoracis

Answer 14

dorsal rami T & upper L

extend T spine

Question 15

Spinalis Cervicis

Answer 15

dorsal rami C

lateral flexion & rotation of C spine; bilaterally extend spine

Question 16

Spinalis Capitis

Answer 16

dorsal rami lower C, upper T

lateral flexion & rotation of head; bilaterally extend head

Question 17

Semispinalis Thoracis

Answer 17

dorsal rami T1 - T6

extension, rotation and lateral flexion of upper thoracic and lower C spine; bilaterally extend T spine

Question 18

Semispinalis Cervicis

Answer 18

dorsal rami C6 - C8

extension, rotation and lateral flexion of C spine; bilaterally extend neck.

Question 19

Semispinalis Capitis

Answer 19

dorsal rami C1 - C6

turns face to side; bilaterally extends head (neck inadvertently)

Question 20

Multifidus

Answer 20

dorsal rami C3 - C8, T1- T2, L1 - L5, sometimes S1

Question 21

Rectus Capitis Posterior Major

Answer 21

suboccipital nerve, dorsal ramus C1

turns face to side; bilaterally extends head

Question 22

Rectus Capitis Posterior Minor

Answer 22

suboccipital nerve, dorsal ramus C1

extends head

Question 23

Obliquus Capitis Superior

Answer 23

suboccipital nerve, dorsal ramus C1

lateral flexion of head; bilaterally extends head

Question 24

Obliquus Capitis Inferior

Answer 24

suboccipital nerve, dorsal ramus C1

turns face to side

Question 25

Quadratus Lumborum

Answer 25

Ventral rami T12, L1-L3 or L4 steadies origin of diaphragm; when pelvis is fixed, it will laterally flex the L spine; bilaterally extends the L spine; stabilizes and depresses the 12th rib.

Question 26

Serratus Posterior Superior

Answer 26

intercostal nerves, ventral rami T2-T5 elevate upper 5 ribs in inspiration

Question 27

Serratus Posterior Inferior

Answer 27

Intercostal nerves, ventral rami T9-T11, subcostal nerve, ventral ramus T12 draws lower 4 ribs down and back; forced inspiration

Question 28

Longus Colli

Answer 28

Ventral rami C2 - C6, sometimes C7 flexion and extension of neck; rotation to the contralateral side

Question 29

Longus Capitis

Answer 29

Ventral rami C1-C3 flex the head

Question 30

Rectus Capitis Anterior

Answer 30

Ventral rami C1, C2 flex the head

Question 31

Rectus Capitis Lateralis

Answer 31

Ventral rami C1, C2 laterally flex the head to ipsilateral side

Question 32

Anterior Scalene

Answer 32

Ventral rami C2 - C6

Question 33

Middle Scalene

Answer 33

Ventral rami C3 -C8

Question 34

Posterior Scalene

Answer 34

Ventral rami C6 - C8