Origin and insertions of thorax muscles Flashcards
external intercostal origin
low border of a rib
external intercostal insertion
upper border of rib below
internal intercostals origin
inner surface of a rib and costal cartilages
internal intercostals insertion
upper borders of the adjacent ribs below
transverse thoracis origin
- inner surfaces of the lower third of the body of the sternum
- adjacent surfaces of the xiphoid process
transverse thoracis insertion
internal surfaces of the sternocostal joints associated with the second (or third) through the sixth ribs
quadratus lumborum origin
- iliolumbar ligament
- crest of the ilium
quadratus lumborum insertion
- rib 12
- tips of the transverse processes of the L1 to L4
psoas major origin
transverse processes and lateral bodies of the last thoracic and all lumbar vertebrae including intervertebral discs
psoas major insertion
lesser trochanter of femur
iliacus origin
- super two thirds of iliac fossa
- inner lip of the iliac crest
iliacus insertion
lesser trochanter of femur
rectus abdominis origin
- pubic crest
- anterior pubic ligament
rectus abdominis insertion
- on the front of the wall of the thorax
- along horizontal line passing laterally from the xiphoid process
- 7th, 6th, 5th costal cartilages
external oblique origin
lateral side of ribs 4-12
