Superficial Back

Question 1

What is the action, blood supply, and innervation of the Trapezius muscle?

Answer 1

Action - elev, dep, retr, up rot scapula
Blood - transverse cervical a.
Innervation - spinal accessory (motor) and C3/C4 (sensory)

Question 2

What is the action, blood supply, and innervation of the Latissimus Dorsi muscle?

Answer 2

Action - ext, add, med rot humerus
Blood - thoracodorsal a.
Innervation - thoracodorsal n.

Question 3

What is the action, blood supply, and innervation of the Levator Scapulae muscle?

Answer 3

Action - elev, down rot scapula
Blood - dorsal scapular
Innervation - dorsal scapular, C3/C4

Question 4

What is the action, blood supply, and innervation of the Rhomboid Major muscle?

Answer 4

Action - retr, elev, down rot scapula
Blood - dorsal scapular
Innervation - dorsal scapular

Question 5

What is the action, blood supply, and innervation of the Rhomboid Minor muscle?

Answer 5

Action - retr, down rot scapula
Blood - dorsal scapular
Innervation - dorsal scapular