Division of the nervous system involved in:
- Hearing: Somatic Nervous System (Sensory)
- Stretching: Somatic Nervous System (Motor)
- Yawning: Autonomic Nervous System
- Salivation: Autonomic (Parasympathetic) Nervous System
- Smelling: Somatic Nervous System (Sensory)
- Stomach Rumbling: Enteric Nervous System