this surrounds the neural tube and notochord to become the vertebrae and ribs
clerotomal mesenchyme
this nerve innervates the skin and true back muscles
posterior rami
this type of spina biffida occurs when the meninges are outside of the vertebral column
meningocele
this is the last ligament that is touched during a spinal tap (lumbar puncture)
ligamentum flavum
in a newborn, the spinal cord runds up to this level
L2-L3
true back muscles are innervated by...
posterior rami
this type of spina bifida occurs when the neural tube is folded wrong. this does not result in a viable fetus
Rachischisis
Latissimus Dorsi is innervated by:
thoracodorsal nerve
describe the spinal cord development
the neural tube thickens and cells in the mantle layer differentiate into alar (forms posterior horn and sensory neurons) and basal (forms anterior horn and motor neurons) plates. the Intermediate horn forms between the alar and basal plates
muscle is derived from this embryological structure
