Anatomy I: Soft Tissue of the Back

Trapezius (covered)

Latissimus dorsi (covered)

Erector spinae

Nuchal groove

Teres major

Median longitudinal furrow

Trapezius

latissimus dorsi

thoracolumbar fascia

rhomboid minor

rhomboid major

levator scapulae

Reflected trapezius

Triangle of Auscultation

Latissimus dorsi

Trapezius

Rhomboid major

Lumbar Triangle

Iliac crest

Latissimus dorsi

External abdominal oblique

Superficial fascia

Deep fascia

Dissection trapezius

Dissection latissimus dorsi

Dissection Triangle of auscultation

Posterior ramus travels from

deep to superficial

Posterior ramus function

sensory to the skin of the back, sweat glands, and arrector pili

Greater Occipital nerve (C2)

cutaneous branch of dorsal ramus

origin of Trapezius

Medial 1/3 of superior nuchal line; EOP; nuchal ligament; SPs of C7-T12

Insertion of Trapezius

Lateral 1/3 of clavicle; acromion; spine of scapula

nerve of trapezius

spinal accessory nerve

motor of spinal accessory nerve

CN XI (accessory nerve)

Pain and proprioception of spinal accessory nerve

C3 and C4 spinal nerves

A trapezius: descending part

elevates scapula

A trapezius: middle part

retracts scapula

A trapezius: ascending part

depresses scapula

artery trapezius

occipital

superficial branch of transverse cervical

dorsal scapular

posterior intercostal

origin of latissimus dorsi

SPs of T7-T12

thoracolumbar fascia

Iliac crest

Inferior 3 or 4 ribs

Insertion of latissimus dorsi

floor of intertubercular groove of humerus

Nerve latissimus dorsi

thoracodorsal nerve (C6,C7,C8)

action of latissimus dorsi

extends, adducts, and medially rotates humerus

artery latissimus dorsi

thoracodorsal

Origin levator Scapulae

posterior tubercles of transverse process C1-C4

Insertion levator scapulae

medial border of scapula (superior too root of scapular spine)

Nerve levator scapulae

dorsal scapular nerve (C5)

action levator scapulae

elevates scapula

rotates glenoid cavity inferiorly

artery levator scapulae

dorsal scapular

origin rhomboid minor

nuchcal ligament

SPs C7-T1

insertion rhomboid minor

medial border of scapula (medial end of scapular spine)

nerve rhomboid minor

dorsal scapular nerve (C4,C5)

action rhomboid minor

retracts scapula

rotates glenoid cavity inferiorly

fix scapula to thoracic wall

artery rhomboid minor

dorsal scapular

origin rhomboid major

SPs T2-T5

insertion rhomboid major

medial border of scapular spine to inferior angle

nerve rhomboid major

dorsal scapular nerve (C4,C5)

action rhomboid major

retracts scapula

glenoid cavity inferiorly

fix scapular to thoracic wall

artery rhomboid major

dorsal scapular