superficial back muscles: O,I,NS,A,BS

serratus anterior A:

Action: terminal protraction, anti-winging

serratus anterior blood supply:

Blood supply: lateral thoracic artery

trapezius muscle- nerve supply

CN XI, spinal accessory nerve

trapezius muscle- origin

EOP (external occipital protuberance), superior nuchal line, ligamentum nuchae, spines of C7 and thoracic vertebra.

serratus anterior I:

I: anterior medial border of scapula

Latissimus Dorsi muscle- Origin

Iliac crest, thoracolumbar fascia, spines of T7-12, Inferioir angle of scapula, 3-4 lower ribs

latissimus Dorsi muscle- Insertion

Medial to bicepital groove of humerus

serratus anterior nerve:

Nerve: long thoracic N.

serratus anterior O:

O: upper 8-9 ribs

Latissimus Dorsi muscle- Nerve supply (CSD)

Thoracodorsal N. (c6,7,8- post. cord of brachial plexus)

subclavian artery

Thyrocervical trunk (sublavian artery)

teres major muscle- action

adducts. extends and medially (internally) rotation of arm.

triangle of Ausculation

boundaries- trap, lat, med. scap, rhomboid maj. muscles significance- hear sounds of respiration

teres major muscle- blood supply

circumflex scapular artery (of subscapular artery)

ligamentum nuchae

connects the trapezius to C7 up to EOP

trapezius muscle- lower action

depression, retraction, upward rotation of scapula

levator scapula muscle- blood supply

dorsal scapular artery- branch of subcalvian artery

rhomboid major muscle- blood supply

dorsal scapular artery- branch of subclavian artery

rhomboid minor muscle- blood supply

dorsal scapular artery- branch of subclavian artery

levator scapula muscle- nerve supply

dorsal scapular nerve (C5-C5 root)

rhomboid major muscle- nerve supply

dorsal scapular nerve (C5-C5 root)

rhomboid minor muscle- nerve supply

dorsal scapular nerve (C5-C5 root)

trapezius muscle- upper action

elavation of scapula

trapezius muscle- middle action

elevation, upward rotation, adduct/retract scapula

Latissimus dorsi muscle- Action

extends, adducts, medially rotates arm (internally)

Axillary artery

is a continuation of subclavian artery as it passes superior to the first rib, ends just inferior to the teres major muscle.

Lumbar triangle

key point to check for a lumbar hernia

trapezius muscle- Insertion

lateral clavical, acromion and scapular spine

branches of axillary artery

lateral thoracic artery (serratus anterior muscle)

Teres major muscle- Origin

lower segment of lateral border of scapula

posterior cord of brachial plexus

lower subscapular N. (C5,C6) upper subscapular N. (C5,C6) thoracodorsal N. (C6,C7,C8)

teres major muscle- nerve supply

lower subscapular nerve (C5,C6- posterior cord of brachial plexus)

teres major muscle- Insertion

medial bicipital groove of humerus

rhomboid major muscle- insertion

medial border of scapula at infraspinous fossa

rhomboid minor muscle- insertion

medial border of scapula at spine

rhomboid minor muscle- action

pulls scapula medially & raises medial border of scapula

rhomboid major muscle- action

pulls scapula medially and raises medial border of scapula

levator scapula muscle- action

raises scapula at medial border

dorsal rami of t7-t12 spinal N.

skin over the latissimus dorsi muscle and thoracolumbar fascia.

dorsal rami of c4-t6 spinal N.

skin over the trapezius M.

dorsal rami of l1-l3 spinal nerves

skin superior to iliac crest (thoracolumbar fascia)

rhomboid minor muscle- origin

spines of C7- T1 vertebra

Rhomboid major muscle- origin

spines of thoracic vertebra

Quadrangular space

structures- axillary N. and posterior circumflex humeral artery

triangular space

structures- circumflex scapular artery (of subscapular artery)

tricep hiatus

structures- deep artery of arm (profunda brachii artery of brachial artery) radial nerve (C5, C6, C7, C8, T1 - posterior cord of brachial plexus)

dorsal scapular artery

subclavian artery- rhomboid major and minor muscles and levator scapulae muscle

levator scapula muscle- instertion

superomedial border of scapula

suprascapular artery

supraspinatus muscel and infraspinatus muscle

latissimus dorsi muscle- blood supply

thoracodorsal artery (continuation of subscapular artery)

trapezius muscle- blood supply

transverse cervical artery

levator scapula muscle- origin

transverse processes of C1-4 vertebra