Superficial (extrinsic) muscles of the back Flashcards
1
Q
Trapezius
A
2
Q
Latissimus dorsi
A
Origin: vertebral spines from T7 to the sacrum, posterior third of the iliac crest, lower 3 or 4 ribs, sometimes from the inferior angle of the scapula
Insertion: floor of the intertubercular groove
Action: extends the arm and rotates the arm medially
Nerve: thoracodorsal nerve (C7,8) from the posterior cord of the brachial plexus
Artery: thoracodorsal a.
