Anatomy- Limbs & back- The Back and Neck
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What is the primary function of the extrinsic muscles of the back?
Movement of the upper limbs
What is the primary function of the intrinsic muscles of the back?
Movement and support of vertebral column
What are the the attachement sites of the intrinsic muscles of the back?
vertebrae or ribs
By what are the intrinsic mucles of the back innervated?
Posterior rami of spinal nerves
What are de muscle part of the 1st superficial layer?
- Latissimus Dorsi
What are the muscles part of the 2nd superficial layer?
- Levator Scapulae
- Rhomboid Minoir & Major
What are the muscles of the 3rd superficial layer?
Serratus Posterior Superior & Inferior
What are the borders of the Triangle of Auscultation?
- Medial: Trapezius
- Lateral: Scapula & Romboid Major
- Inferior: Latissimus Dorsi
- Floor: Posterior chest wall
What is the origin of Levator Scapulae?
TPs of C1-C4
What is the insertion of the Levator Scapulae?
Superior-medial border of scapula
What is the Function of Levator Scapulae?
- Elevation of the scapula
- Downward rotation of scapula
What is the origin of Rhomboid Minor & Major?
SPs of C7-T5
What is the insertion of Rhomboid Minor & Major?
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