Superficial Muscles of Back (extrinsic)

Question 1

Latissimus Dorsi Muscle

Answer 1

Origin: Spinous Processes of T6-12, Thoracolumbar fascia, Iliac crest, inferior 3 ribs.

Insertion: Intertubercular Groove of humerus

Innervation: Thoracodorsal Nerver

Question 2

Trapezius Muscle

Answer 2

Origin: External occipital protuberance, nuchal line, spinous processes of C7-T12.

Insertion: Lateral 1/3 of clavicle, aromian, spine of scapula

Innervation: Spinal Accessory (CN XI)

Question 3

Rhomboid Major Muscle

Answer 3

Origin: Spinous processes of T2-5.

Insertion: Medial border of scapula between spine and inferior angle.

Innervation:

Doral Scapular Nerve

Question 4

Rhomboid Minor Muscle

Answer 4

Origin: Nuchal ligament, spinous process of C7 & T1.

Insertion: Medial end of scapular spine

Innervation: Dorsal scapular Nerve

Question 5

Levator Scapulae Muscle

Answer 5

Origin: Posterior processes of transverse processes of C1-4.

Insertion: Medial Border of scapula superior to spine.

Innervation: Dorsal scapular Nerve and C3-4