Innervations and actions of thorax muscles Flashcards
1
Q
external intercostals action
A
elevate ribs during inspiration
2
Q
internal intercostals action
A
draw ribs downward during forced expiration
3
Q
tranversus thoracis action
A
depresses the ribs
4
Q
quadratus lumborum action
A
- extension and side flexion of lumbar spine
- expiration
5
Q
psoas major action
A
- forward flexion and side flexion of lumbar spine
- flexion of the hip joint
6
Q
iliacus action
A
flexion of hip joint
7
Q
rectus abdominis action
A
- expiration
- flexion of the spine
8
Q
external oblique action bilaterally
A
flexion of the trunk and posterior tilt of the pelvis
9
Q
external oblique action unilaterally
A
- lateral flexion
- contralateral rotation of the trunk
10
Q
internal oblique action bilaterally
A
- flexion of the trunk
- posterior tilt of the pelvis
11
Q
internal oblique action unilaterally
A
- lateral flexion
- ipsilateral rotation of the trunk
12
Q
tranversus abdominis action bilaterally
A
- stabilization of attachment sites for other abdominal muscles
- compression of the abdominal cavity
13
Q
transversus abdominis innervation
A
- lower six thoracic nerves
- first lumbar nerve
14
Q
internal oblique innervation
A
- lower six thoracic nerves
- first lumbar nerve
15
Q
external oblique innervation
A
lower six thoracic nerves
