Middle Back Muscles

Question 1

Serratus Posterior Superior (origin)

Answer 1

Spinous Processes of C6-T3 (aponeurotic and lower part of nuchal ligament.)

Question 2

Serratus Posterior Superior (insertion)

Answer 2

Posterior ribs 1-4 heading down

Question 3

Serratus Posterior Superior (Innervation)

Answer 3

Ventral primary rami of T1-T4

Question 4

Serratus Posterior Superior (action)

Answer 4

Pulls up on upper ribs

Question 5

Serratus Posterior Inferior (Origin)

Answer 5

Spinous processes of T11-L2 (aponeurotic)

Question 6

Serratus Posterior Inferior (Innervation)

Answer 6

Ventral primary rami of T8-T11

Question 7

Serratus Posterior Inferior (action)

Answer 7

Pulls down on lower ribs.

Question 8

Serratus Posterior Inferior (Insertion)

Answer 8

Ribs 9-12 heading upward