axial muscle chart

Question 1

rectus abdominis action and nerve innervation

Answer 1

trunk flexion

intercostal nerves T7-T12

Question 2

external oblique action and nerve

Answer 2

flexion
ipsilateral lateral flexion
contralat rotation

intercostal nerves T7-T12

Question 3

internal oblique action and nerve

Answer 3

flexion
ipsi lat flexion, rotation

intercostal nerves T7-12

Question 4

serratus posterior superior action and nerve

Answer 4

elevate ribs

intercostal nerves T1-3

Question 5

serratus posterior inferior action and nerve

Answer 5

depresses ribs

intercostal nerves T9-12

Question 6

splenius capitis

Answer 6

extend
ipsilat lat flex
ipsilateral rotation

dorsal rami of inf cervical nerves

Question 7

splenius cervicis

Answer 7

extend
ipsi lat flex
ispi rot

dorsal rami of inferior cervical nerves

Question 8

iliocostalis lumborum, thoracis, cervicis

Answer 8

extend
ipsilat lat flex
ipsi rotation

dorsal rami

Question 9

longisisimus thoracis, cervicis, capitis

Answer 9

extend
ipsilat lat flexion
ipsi rotation
dorsal rami

Question 10

spinalis thoracis, cervicis

Answer 10

extend
ispilat lat flex
ipsi rotation

dorsal rami

Question 11

semispinalis thoracis, cervicis and capitis

Answer 11

extend
ipsilat lat flexion
contralat rot

dorsal rami

Question 12

multifidis

Answer 12

extend
ispilat lat flex
contralat rot

dorsal rami

Question 13

rotatores

Answer 13

ext
ipsilat lat flexion
contral rot

dorsal rami

Question 14

interpsinalis

Answer 14

extend

dorsal rami

Question 15

intertransversarii

Answer 15

ipsilat lat flexion

dorsal rami

Question 16

quadratus lumborum

Answer 16

extend
ipsilat lat flexion

T12 upper lumbar ventral rami

Question 17

rectus capitis posterior major and minor

Answer 17

ext
ipsi rotation

suboccipital nerve

Question 18

obliquus capitis superior

Answer 18

extend ipsilateral lat flexion

suboccipital nerve

Question 19

obliquus capitis inferior

Answer 19

ispi rotation

suboccipital nerve

Question 20

SCM

Answer 20

extend occiput, upper c/s
flex lower cervical
ipsilat lat flexion
contralat rot

cranial nerve 11

Question 21

scalenus posterior and medius

Answer 21

ipsilat lat flex
contralat rot

c3-8 ventral rami

Question 22

scalenus anterior

Answer 22

flex
ipsilateral lat flex
contralat rot

c3-c8 ventral rami

Question 23

facial nerve

Answer 23

muscles of the face
frontalis : eyebrows
orbicularis oculi : eyelids
orbicularis oris : lips
buccinator : cheeks
zygomaticus: smile

Question 24

trigeminal nerve

Answer 24

muscles of mastication
temporalis : elevate/retrude mandible
masseter: elevate/ protrude mandible
medial pterygoid : elevate / protrude mandible
lateral pterygoid : depress, protrude mandible