HNA Mesoderm

axial mesoderm

notocord

paraxial mesoderm

somite

intermediate mesoderm

reproductive/urinary system

lateral plate mesoderm (LPM)

splanchnic and somatic divisions

mesoderm condenses

notocord

Notocord

primitive support structure, signals/directs neural development. Adult version is nucleus pulposus

Paraxial Mesoderm

creates sclerotome, somite dermatome, syndetome, and myotome

sclerotome

vertebrae, ribs, occipital bone

somite dermatome

dermis over spine (epaxial region)

syndetome

tendons

myotome

skeletal muscle, epimere, and hypomere

epimere

epaxial muscles (deep back)

hypomere

hypaxial muscles

somites

segments associated with single spinal nerve

dermatome

area of skin nerves supplied by single spinal nerve

somatic LPM (SoLPM)

connective tissues, bones, smooth muscle associated with somatic (outer tube)

Splanchnic LMP (SpLPM)

connective tissue and smooth muscle associated with visceral (inner tube), blood vessel endothelium, cardiogenic SpLPM

endoderm deve