Muscle Attachments Flashcards
diaphragm
ORIGIN - the lumbar vertebrae - bodies and intervening discs L1 – L3 - inner surface of the lower six ribs and their costal cartilages - posterior surface of the xiphoid - process of the sternum INSERTION - central tendon
intercostals
ORIGIN
- upper border of rib
INSERTION
- lower border of rib above
levator costorum
ORIGIN
- transverse processes of vertebrae C7 – T11
INSERTION
- upper border of rib below
subcostals
like innermost intercostals but jumps 1-2 intercostal spaces
rectus abdominus
ORIGIN - xiphoid process of sternum - costal cartilages of ribs 5, 6 and 7 INSERTION - pubic crest and pubic symphysis
external oblique
ORIGIN - outer border lower 8 ribs and costal cartilages INSERTION - iliac crest - linea alba
internal oblique
ORIGIN - lower border lower 4 ribs and costal cartilages INSERTION - iliac crest - linea alba
transverse abdominus
ORIGIN - inner surface of costal cartilages of lower 6 ribs INSERTION - iliac crest - thoracolumbar fascia - inguinal ligament
pyramidalis
ORIGIN
- pubic crest
INSERTION
- linea alba
quadratus lumborum
ORIGIN - iliac crest - adjacent iliolumbar ligament INSERTION - medial half lower border rib 12
psoas major
ORIGIN - bodies and IV discs - transverse process of T12 – L5 INSERTION - lesser trochanter of femur with iliacus
psoas minor
ORIGIN
- bodies and IV discs T12 – L1
INSERTION
- iliopubic eminence
iliacus
ORIGIN
- iliac fossa
INSERTION
- lesser trochanter of femur with psoas major
serratus posterior superior
ORIGIN
- spinous process of C7 to T3
INSERTION
- angles of ribs 2 – 5
serratus posterior inferior
ORIGIN
- spinous process of T11 – L2
INSERTION
- angles of ribs 9 – 12