Final posterior abdominal musculature Flashcards
Which muscle is said to form the iliolumbar ligament?
quadratus lumborum
What osseous part of the vertebral column serves as an origin to the quadratus lumborum?
transverse process of L5
What is the insertion of the quadratus lumborum?
transverse tubercle of the transverse process L1-L4 and 12th rib
What will innervate the quadratus lumborum?
the ventral rami of T12 and L1-L3 or L4 spinal nerves
What is the origin of the psoas major?
vertebral bodies T12, L1-L5, S1 and transverse processes of L1-L5
What is the insertion of the psoas major?
lesser trochanter of the femur
What will innervate the psoas major?
primarily the ventral rami of L2 and L3, may include ventral rami of L1 and L4 spinal nerves
What is the origin of the psoas minor?>
vertebral bodies T12, L1
What is the insertion of the psoas minor?
iliopubic eminence of the innominate bone
Contraction of psoas minor will result in what movements?
weakly flexes trunk
What will innervate the psoas minor?
the ventral ramus of L1 spinal nerve
What osseous part of the vertebral column serves as an origin to the iliacus?
superolateral margin of sacrum
What non-vertebral column site serves as an origin to the iliacus?
iliac crest and upper two-thirds of the iliac fossa of the innominate bone
What is the insertion of the iliacus?
lesser trochanter of the femur
What will innervate the iliacus?
the femoral nerve, primarily the ventral rami of L2 and L3
