Superficial Intrinsic Back Muscles

Question 1

Serratus posterior superior insertion?

Answer 1

2nd-4th ribs (superior borders)

Question 2

Serratus posterior superior innervation?

Answer 2

Spinal nn. T2-T5 (anterior rami)

Question 3

Serratus posterior superior action?

Answer 3

Elevate ribs

Question 4

Serratus posterior inferior origin?

Answer 4

T11-L2 spinous processes

Question 5

Serratus posterior inferior insertion?

Answer 5

8th-12th ribs inferior borders near angles

Question 6

Serratus posterior inferior innervation?

Answer 6

Spinal nn. T9-T12 (anterior rami)

Question 7

Serratus posterior inferior action?

Answer 7

Depresses ribs

Question 8

Serratus posterior superior origin?

Answer 8

Nuchal ligament; C7-T3(spinous processes)

Question 9

Splenius capitis origin?

Answer 9

Nuchal ligament; C3-C7 spinous processes

Question 10

Splenius capitis insertion?

Answer 10

Occipital bone (lateral superior nuchal line; mastoid process)

Question 11

Splenius capitis innervation?

Answer 11

Spinal nn. C1-C6 (posterior rami, lateral branches)

Question 12

Splenius capitis action?

Answer 12

Bilateral: extends cervical spine and head
Unilateral: flexes and rotates head to the same side

Question 13

Splenius cervicis origin?

Answer 13

T3-T6 spinous processes

Question 14

Splenius cervicis insertion?

Answer 14

C1-C2 (transverse processes)

Question 15

Splenius cervicis innervation?

Answer 15

Spinal nn. C1-C6 (posterior rami, lateral branches)

Question 16

Splenius cervicis action?

Answer 16

Bilateral: extends cervical spine and head
Unilateral: flexes and rotates head to the same side