Superficial Back Muscles Flashcards Preview

Origen:

- Spinous process T7-T12 Directly

- Spinous process Lumbar Indirectly

- Thoraco Fascia (aponeurotic membrane) 

- Posterior 1/3 of Iliac crest through Thoraco Fascia

Costal Part:

- Join superficial part

- Goes convergly passes inferior angle of scapula

- Parallel to Teres Major

Insertion:

- Intertubercular groove of the humerus bone

- Depresses the elevated limb

- Middle rotation

- Abduction

- Hyperextension

Costal attachment:

- Slowly contraction elevates the lower ribs (Inspiratory muscle)

- Sudden contration compresses thorax (caughing reflex)

Thoracodorsal Nerve

Superficial Layer

With Costal Part with Teres Major builds the Posterior axillary fold

Intermediate Layer

Flat thin

Creates a gap to allow vessles to pass through

Intermediate Layer

Flat thin

Creates a gap to allow vessles to pass through

Superficial Layer

Rhomboid Speculum

- Between spinous process C5-T1 form rhomboid aponeurotic tendinous structure

- Palpable

- Stabilization of stabilisation of extended vertebral column

Accessory Nerve

Originates:

- External Occipital protuberance and superior nuchal line

- To T12

Insertion Decending Part:

- Acromium end of clavicle

Insertion Horizontal Part:

- Acromium

- Lateral part of scapular spine

Insertion Acceding Part:

- Medial part of scapula spine

Decending Part:

- Elevates Clavicle

Horizontal Part:

- Retracts Scapula

Accending Part:

- Rotates Scapula

- Depresses Scapula

Origen:

- Spinous process C6, C7

Insertion:

- Superior 1/3 medial border of scapula

Origen:

- T1 - T4

Insertion:

- Inferior 2/3 medial border of scapula

Retration of scapula