Muscles of the back

Question 1

Serratus posterior superior

Answer 1

SPs C7-T3 - 2-5th ribs. Elevates ribs.

Question 2

Serratus posterior inferior:

Answer 2

SPs T11-L2 - 9-12th ribs. Elevates ribs.

Question 3

Rhomboid minor

Answer 3

SPs C7-T1 - Medial scapula. Stabilises/retracts/elevates/internal rotator of scapula. Dorsal scapula nerve.

Question 4

Rhomboid minor

Answer 4

SPs T2-5 - Medial scapula. Stabilises/retracts/elevates/internal rotator of scapula.

Dorsal scapula nerve.

Question 5

Latissmus dorsi

Answer 5

Inferior angle of scapula/ 9th-12th ribs/ illiac crest - Lesser tuberosity of humerus. Extends, adducts, internally rotates arm.

Thoracodorsal nerve

Question 6

Spinalis

Answer 6

SPs T10-L3 - SPs T2-8/occipital bone of skull. Extends/SB.

Question 7

Longissimus

Answer 7

Iliac crest/ sacrum/ L1-5 SPs - 2-12th ribs/ TPs T1-12. Extends/SB.

Question 8

Iliocostalis

Answer 8

Sacrum/ illiac crest/ SPs L1-5 - 1-12th ribs/ inferior angle of scapula. Extends, SB, rotates spine.

Question 9

Quadratus Lumborum

Answer 9

Illiac crest - TPs L1-5/ 12th rib. SB trunk.