Centrum (vertebral body)Notochord

Neural Arch

Neural Spine

Aortic arch/vein

Hemal Spine

Hemal Spine

Epaxial muscle

Hypoaxial muscle

Horiz. skeletongenous septum

Myomere (muscle)

Myoseptum (b/t muscles)Epaxial muscle

Hypoaxial muscle

Horiz. skeletongenous septum

External oblique

Internal oblique

Transverse abdominis

Rectus abdominis

External oblique

Internal oblique

Rectus abdominis

Transverse abdominis

Soleus