unction 3 Chapter 1:Get to Know Your Autonomic Nervous System ...__....__....__...._ 7 The Twelve Cranial Nerves 7 Cranial Nerve Dysfunction and Social Engagement 13 Treating the Cranial Nerves 21 The Spinal Nerves 22 The Enteric Nervous System 26 Chapter 2: The Polyvagal Theory__....__....__....__...._