1. CNS
1.1. Brain
1.1.1. Forebrain
1.1.1.1. Cerebrum
1.1.1.1.1. Frontal
1.1.1.1.2. Parietal
1.1.1.1.3. Temporal
1.1.1.1.4. Occipital
1.1.1.1.5. Insula
1.1.1.2. Diencephalon
1.1.1.2.1. Thalamus
1.1.1.2.2. Hypothalumus
1.1.2. Midbrain
1.1.3. Hindbrain
1.1.3.1. Pons
1.1.3.2. Medulla oblongata
1.1.3.3. Cerebellum
1.2. Spinal Cord
1.2.1. Components
1.2.1.1. White matter (outside)
1.2.1.1.1. sensory tracts (ascendind tracts)
1.2.1.1.2. motor tracts (descending tracts)
1.2.1.2. Gray matter (inside)
1.2.1.2.1. neuron cell bodies
1.2.2. Division
1.2.2.1. Cervical
1.2.2.2. Thoracic
1.2.2.3. Lumbar
1.2.2.4. Sacral
1.2.2.5. Coccygeal
1.2.3. Reflex arcs
2. Peripheral NS
2.1. Autonomic NS
2.1.1. Components
2.1.1.1. ganglia (nerves and neurons outside of the CNS)
2.1.2. Division
2.1.2.1. Parasympathetic SYS.
2.1.2.1.1. reponsible for the resting state responses
2.1.2.2. Sympathetic SYS.
2.1.2.2.1. dominant during emergency or excited states
2.2. Somatic NS
2.2.1. Cranial nerves
2.2.1.1. innervate four sense organs, and muscles of the face and neck
2.2.2. Spinal nerves