The peripheral autonomic nervous system

The central nervous system

The peripheral somatic nervous system

The spinal cord

Potassium channels close slowly, thus allowing too much potassium out of the cell

Sodium channels close slowly, thus allowing too much sodium into the cell

Sodium channels close quickly, not allowing enough sodium into the cell

Potassium channels close quickly, not allowing enough potassium out of the cell

Hyperpolarization only occurs in cells that are not able to be depolarized

Somatic nervous system

Peripheral nervous system

Sympathetic nervous system

Parasympathetic nervous system

Schwann cells

Glial cells

Astrocytes

Ependymal cells

Myocytes

Schwann cells

Glial cells

Astrocytes

Ependymal cells

Myocytes

The propagation of signal through a neuron initiates at the dendrite, enters the cell body, and is transmitted from the axon

If an electrical disturbance is large enough in the cell body, the signal generates an action potential at the dendrite

Neurons contain multiple dendrites and cell bodies

Neurons transmit electrical signals from one cell to the other at the cell body

The propagation of signal through a neuron initiates at the dendrite, enters the cell body, and is transmitted from the axon

If an electrical disturbance is large enough in the cell body, the signal generates an action potential at the dendrite

Neurons contain multiple dendrites and cell bodies

Neurons transmit electrical signals from one cell to the other at the cell body

The peripheral autonomic nervous system

The central nervous system

The peripheral somatic nervous system

The spinal cord

Potassium channels close slowly, thus allowing too much potassium out of the cell

Sodium channels close slowly, thus allowing too much sodium into the cell

Sodium channels close quickly, not allowing enough sodium into the cell

Potassium channels close quickly, not allowing enough potassium out of the cell

Hyperpolarization only occurs in cells that are not able to be depolarized

Potassium channels close slowly, thus allowing too much potassium out of the cell

Sodium channels close slowly, thus allowing too much sodium into the cell

Sodium channels close quickly, not allowing enough sodium into the cell

Potassium channels close quickly, not allowing enough potassium out of the cell

Hyperpolarization only occurs in cells that are not able to be depolarized