Superficial Back

Question 1

Trapezius

Answer 1

Origin: External Occipital Protuberance, Ligamentum Nuchae, Spines of C7-T12

Insertion: Lateral 1/3 Clavicle, Acromion and spine of Scapula

Action: Elevates and depresses shoulder; retracts scapula; extends head

Nerve: Accessory Nerve (Cranial XI)

Question 2

Latissimus Dorsi

Answer 2

Origin: Spines of T6-T12, Thoracolumbar Fascia, Iliac Crest

Insertion: Intertubercular groove

Action: Adducts extends, and medially rotates arm

Nerve: Thoracodorsal Nerve

Question 3

Levator Scapulae

Answer 3

Origin: Transverse Processes of C1-C4

Insertion: Superior angle and medial border of Scapula

Action: Elevates and adducts scapula

Nerve: Dorsal Scapular Nerve

Question 4

Rhomboid Minor

Answer 4

Origin: Spines of C7, T1

Insertion: Medial border of Scapula

Action: Elevates and adducts scapula

Nerve: Dorsal Scapular Nerve

Question 5

Rhomboid Major

Answer 5

Origin: Spines of T2-T5

Insertion: Medial border to inferior angle of scapula

Action: Elevates and Adducts scapula

Nerve: Dorsal Scapular Nerve