Trapezius origin
EOP
median 1/3 superior nuchal line
Ligmentum nuchae
SP of C7 - T12
Trapezius innervation
Motor Accessory nerve
Sensory ventral c3 c4
Trapezius blood supply
Superior: Occipital a
Middle: Transverse Cervical a
Inferior : dorsal scapular a.
Trapezius blood supply variation
Middle fibers: superficial branch of transverse cervical a.
Inferior fibers : deep branch of transverse cervical a.
Latssimus dorsi origin
Thorcolumbar fascia SP of T7 - L5 and post iliac crest
Via Bone- iliac crest and lower 3-4 ribs
Latssimus dorsi innervation
Thorcodorsal nerve (c6 -c8) fibers arise from posterior cord of brachial plexus
Latssimus dorsi action
Extension of arm
Medial rotation of arm
Abduction of arm
Levator scapulae origin
TP C1 - C4
Levator scapulae innervation
C3 -C4 ventral rami and dorsal scapular N (C5)
Serratus anterior origin
Ribs 1 -8
Serratus anterior insertion
Anterior surface of medial boarder of scapula
Serratus anterior innervation
Ventral rami
Serraatus posterior superior origin
Ligmentum nuchae and spinous process of c7 - T2/3
Levator scapulae blood supply variant
Deep branch of transverse cervical a.
Levator scpaulae action
Elevates superior angle of scapula and inferior rotates glenoid fossa
Serratus posterior blood supply
Highest intercostal an arises from 2nd part of subclavian a.
Posterior intercostal aa. Arise from descending thoracic aorta
Serratus posterior superior insertion
Ribs lateral to the angle 2-5
Serratus posterior superior innervation
First 4 intercostal nerves ventral T1 - T4
Serratus posterior inferior origin
SP T11- L2
Serratus posterior inferior insertion
Lower 4 ribs lateral to angle
Serratus posterior inferior innervation
T9 - T12
Ilicocostalis cervics
Upper 3 - 6 ribs at angle
Iliocostalis cervics innervation
C4 -c6
Longissimus thoracis origin
Accessory and traverse process of lumbar vertebrae