Select Muscles of the Thorax

Question 1

What is the origin of the levator costarum brevis?

Answer 1

Transverse tubercles of transverse processes from C7, T1-T11

Question 2

What will innervate the levator costarum brevis?

Answer 2

The dorsal rami of T1-T12 spinal nerves

Question 3

What is the origin of the levator costarum longus?

Answer 3

transverse tubercles of transverse processes from T7-T10

Question 4

What will innervate the levator costarum longus?

Answer 4

the dorsal rami of the lower thoracic spinal nerves

Question 5

What will innervate the serratus posterior superior?

Answer 5

the ventral rami of T2-T5 spinal nerves…intercostal nerves

Question 6

What is the origin of the serratus posterior inferior?

Answer 6

spinous tubercles of spinous processes from T11, T12, L1 and L2, possibly L3

Question 7

What will innervate the serratus posterior inferior?

Answer 7

the ventral rami of T9-T11, the intercostal nerves and the ventral ramus of T12, the subcostal nerve