Muscles of the Superficial Intrinsic Back

Question 1

Insertion of the Serratus posterior superior

Answer 1

Superior border of ribs 2-4

Question 2

Innervation of the Serratus Posterior Superior

Answer 2

spinal nerve T2-T5 anterior rami

Question 3

Action the Serratus Posterior Superior

Answer 3

Elevates ribs

Question 4

Origin of the Serratus Posterior Inferior

Answer 4

Spinous processes of T11-L2

Question 5

Insertion of Serratus Posterior Inferior

Answer 5

Inferior border of ribs 8-12

Question 6

Innervation of Serratus Posterior Inferior

Answer 6

Spinal nerves T9-T12 (anterior rami)

Question 7

Action of Serratus Posterior Inferior

Answer 7

Depresses ribs

Question 8

Origin of the Splenius Capitis

Answer 8

Nuchal ligament: spinous processes of C7-T3

Question 9

Insertion of the Splenius Capitis

Answer 9

Occipital bone (lateral superior nuchal line and mastoid process)

Question 10

Origin of Splenius Cervicis

Answer 10

Spinous processes at T3-T6

Question 11

Insertion of the Splenius Cervicis

Answer 11

Transverse processes of C1-C2

Question 12

Innervation of Splenius Cervicis

Answer 12

Spinal nerves C1-C6 (posterior rami, lateral branches)

Question 13

Actions of the Splenius

Answer 13

Bilaterally: extends the cervis spine and head
Unilaterally: flexes and rotates the head to the same side

Question 14

Origin of the Serratus Posterior Superior

Answer 14

Nuchal ligament: Spinous processes at C7-T3