Superb light show dance mob Muscle Contraction Process: Molecular Mechanism [3D Animation] Case Histories in Human Physiology - Table of Contents. Autonomic Nervous System (ANS) - An overview of anatomy, divisions, receptors, and neurotransmitters Autonomic vs somatic nervous system Excitatory and inhibitory neurons part 2. Excitatory and inhibitory neurons part 1. Sympathetic and parasympathetic nervous systems: antagonistic control. Interactive Physiology. Digestive System. Interactive Physiology.