Where is the Transversus Abdominis?

The Transversus Abdominis muscle, (TVA) is the deepest layer of the abdominal muscles. It is forming the front and sides of the abdominal wall, deep to the more superficial abdominal muscles, layered below the internal oblique muscle.[1] It is an important core muscle and its primary function is to stabilize the lumbar spine and pelvis before movement of the lower and /or upper limbs occur.[2]

1. https://en.wikipedia.org/wiki/Transverse_abdominal_muscle

2. https://www.physio-pedia.com/Abdominal_Muscles

VisibleBodyAtlas 2021 (app for the video rendition)