All ANs

Trapezius A

upper - elevation and upward rotation of the scap, extend, lat flx, and OS rot of head

middle- aDd of scap

lower - depression and upward rotation of the scap, accessory mm for respiration

trazpexius N

accessory n CN IX and ventral rami C2,3,4

Rhomboids Major A

aDd and elevation of scap, rotate glenoid cavity facing caudally

rhomboids major N

dorsal scapular N C4,5 

rhomboid minor A

aDd and elevate the scap, rotate glenoid cavity facing caudally

rhomboid minor N

dorsal scapular C4,5

latissimus dorsi A

O fixed - medial rotation, aDd and extension of the shoulder joint, depress shoulder girdle, laterally flex trunk

I fixed - tilt pelvis anterior and laterally, hyperextend spine, accessory respiration mm

latissimus dorsi N

thoracodorsal C6,7,8

spinalis A

extend spine, assist OS rot of neck

spinalis N

spinal

longissimus A

extend and lat flx of spine, assist SS rot of neck

longissiumus N

spinal

iliocostalis A

ext and lat flx of spine, draw ribs down

iliocostalis N

spinal

multifidi A

ext of vertebral column, OS rot, SS SB, spinal stabilization

multifidi N

spinal

rotators A

ext of vertebral column, OS rot, stabilization

rotatores N

spinal

Quadratus Lumborum A

extend and lat flx lumbar spine, depress 12 rib, stabilize 12 rib during respiration bilaterally

quadrates lumborum N

lumbar plexus (T12-L3)

Serratus Anterior A

aBd and upward rot of scapula, hold medial boarder of scap firmly against the rib cage, depress and elevate scapula, forced inspiration

serrates anterior N

long thoracic C5,6,7,8

external intercostals

inspiration, elevate ribs, expand chest

external intercostal N

T1-12

internal intercostal A

forced expiration, depress ribs

internal intercostals N

T1-12

sternocleidomastoid A

flex, ext, lat flx, OS rot of neck

sternocleidomastoid N

accessory C1-2

pec major A

aDd and med rotate humerus, elevate thorax as in forced inspiration, upper fibers - flex 

pec major N

lateral and medial pectoral C5-T1

pec minor A

tilt scap anteriorly and forced inspiration

pec minor N

medial pectoral n C6-T1

rectus abdominus A

elevate vertebral column, approximate thorax and tilt pelvis anteriorly, flx thrunk

rectus abdominus N

ventral rami C6-T12

external obliques A

bil- flx vertebral column, support and compress abdominal viscera, depress thorax, respiration, post rot of pelvis

unil- OS rot and lat flx of vertebral column

external oblique N

iliohypogastric and ilioinguinal T5-12

internal oblique A

lower anterior fibers - compress and support abdominal viscera with transverses abdominus

upper anterior fibers- 

bil- flex vertebral column, support/compress, abdominal viscera, depress thorax

uni- SS rot

lateral fibers-

bil- flex vertebral column and depress thorax

uni- lat flx of vertebral column, SS rot

internal oblique N

iliohypogastric, ilioinguinal, and ventral rami T7-L1

transverses abdominis A

flatten abdominal wall and compress viscera, stabilize linea alba, stabilize lumbar spine 

transversus abdominis N

iliohypogastric, ilioinguinal, ventral divisions T7-L1

psoas major A

O fixed - flex, lat rot, and and of hip joint

I fixed -

bil- trunk flx while increasing lumbar lordosis

uni- lat flx of trunk

psoas major N

lumbar plexus L1-4

iliacus A

flex, lat roat, and and of hip joint

iliacus N

flemoral L1-4

anterior scalene A

OS rot of neck, flex, lat flx, respiration

anterior scalene N

lower cervicle C3-6

middle scalene A

lat flx and OS rot of neck, respiration

middle scalene N

lower cervicle C2-7

posterior scalene

SS rot of neck, lat flx, respiration

posterior scalene N

lower cervical C6-8

levator scapulae A

ext, lat flx, and SS rot of neck, elevate and assist downward rot of scap

levator scapulae N

cervical and dorsal scapular n C3-5

splenius capitus A

ext, lat flx, and SS rot of neck

splenius capitis N

cervical

semispinalis capitis A

ext and OS rot of head

semispinalis capitis N

cervical

semispinalis cervicis A

ext of vertebral column and OS rot in upper thoracic and cervical areas

semispinalis cervicis N

spinal

rectus capitis posterior major A

ext, ipsilateral SB, ilsiplateral rot in neutral or extended, contralateral when flexed

rectus capitis posterior major N

suboccipital C1

rectus capitis posterior minor A

ext, ipsilateral SB and contralateral rot

rectus capitis posterior minor N

suboccipital n, C1

oblique capitis superior A

ext, ipsilateral SB, contralateral rot

oblique capitis superior N

suboccipital C1

oblique capitis inferior A

extension, ipsilateral SB and rot

oblique capitis inferior N

suboccipital C1

temporalis A

close jaw

temporalis N

trigeminal - temporal branch

masseter A

close jaw

masseter N

trigeminal - mandibular branchl

lateral pterygoid A

open jaw, protrude mandible, moves mandible to contralateral side

lateral pterygoid N

trigeminal n - mandibular branch

medial pterygoid A

close jaw

medial pterygoid N

trigeminal - mandibular branch

anterior digastric A

elevate and pull hyoid anteriorly, assist depression of mandible, elevate and pull hyoid posteriorly

anterior digastric N

trigeminal V and facial n VII

posterior digastric A

elevate and pull hyoid anteriorly and posteriorly, depress mandible 

posterior digastric N

trigeminal V facial VII

Deltoid A

anterior fibers - flex and med rot

middle fibers - aBd

posterior fibers - ext and lat rot

deltoid N

axillary C5,6

bicepts brachii A

elbow flx, forearm supination, shoulder flx, abd if humerus is laterally rotated (LH), and aDd (SH)

biceps brachii N

musculocutaneous C5,6

coracobrachialis A

flx shoulder and aDd

coracobrachialis N

musculocutaneous C5,6

supraspinatis A

lat rotation and aBd of shldr joint , and stabilize head of humerus into glenoid cavity

supraspinatus N

suprascapular N C4,5,6

infraspinatus A

lat rot of shldr joint, stabilize head of humerus in glenoid cavity

infraspinatus N

suprascapular n C4,5,6

subscapularis A

med rot of shldr joint, stabilize head of humerus into glenoid cavity

subscapularis N

upper and lower subscapularis C5,6,7

teres minor A

lat rotation of shoulder joint, stabilize head of humerus into glenoid cavity

teres minor N

axillary C5,6

teres major

medial rot, aDd, and ext of shouldr joint

teres major N

lower subscapular C5,6,7

triceps brachii A

ext elbow joint, assist aDd and ext of shouldr joint

triceps brachii N

Radial C6,7,8T1

pronator teres A

flex of elbow, pronation of forearm

pronator teres N

median C6,7

pronator quadratus A

pronate forearm

pronator quadratus N

median C7,8,T1