Which is derived from thoracolumbar fascia –
Correct Answer: Lateral arcuate ligament
Description: 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.
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Anatomy
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