Which is derived from thoracolumbar fascia -
Ans. is 'b' i.e., Lateral arcuate ligament o Thoracolumbar fascia covers the deep muscles of back of the trunk, o It is composed of three fascial layers -i) Anterior layer# It is the thinnest layer# Medially it is attached to transverse process of lumbar vertebrae.# Laterally it fuses with fascia transversalis and aponeurosis of transversus abdominis# Inferiorly it is attached to iliolumbar ligament and iliac crest.# Superiorly it is attached to 12th rib and extends to transverse process of Lj forming the lateral arcuate ligament of diaphragm.ii) Middle layer# Medially it is attached to transverse process of lumbar vertebrae.# Inferiorly it is attached to iliac rest.# Superiorly it is attached to 12th ribiii) Posterior layer# It is the thickest layer and attached to spines of lumbar verterae.o Quadratus lomborum is enclosed between anterior and middle layers. Erector spinae (paraspinal muscle) is enclosed between middle and posterior layer.
Medial arcuate ligament
Lateral arcuate ligament
Lacunar ligament
Cruciate ligament
Upper Extremity