Extrinsic Back Muscles Flashcards
1
Q
Extrinsic back muscles are innervated by _____ and attach to _____ to move the arm
A
ventral rami; scapula and humerus
2
Q
superficial extrinsic back muscles
A
- trapezius
- latissimus dorsi
- rhomboids
- levator scapulae
3
Q
intermediate back muscles
A
- serratus posterior superior (lifts rib cage; inhale)
- serratus posterior inferior (pulls rib cage down; exhale)
4
Q
serratus posterior superior and inferior innervation
A
intercostal nerves
5
Q
the serratus posterior superior is located deep to the _____
A
rhomboids
6
Q
the serratus posterior inferior is located deep to the _____
A
latissimus dorsi
7
Q
how do the serratus posterior superior and inferior play a role in proprioception?
A
these muscles have stretch receptors that tell you if the rib cage is being pulled up or down
