Neuroanatomy Draw It To Know It

11. Cranial and Spinal Nerve Overview and Skull Base 179

Ectoderm

Neural crests: neural tube-derived

Somite:

mesoderm-

derived

Myotome

Notochord:

mesoderm-derived,

becomes vertebrae

Endoderm

Alar

plate

Basal

plate

Sulcus

Limitans

Dermatome

Sclerotome

Neural tube: ectoderm-derived

DRAWING 11-1 Spinal & Cranial Nerve Origins