The Biological Basis of Behavior

The CNS includes the brain and spinal cord, while the PNS includes nerves and ganglia outside the CNS.

The CNS includes only the brain, while the PNS includes the spinal cord and nerves.

The CNS controls voluntary actions, while the PNS controls involuntary actions only.

The CNS is responsible for digestion, while the PNS is responsible for thinking.

Nucleus, Mitochondria, Ribosomes

Soma, Dendrites, Axon

Cell body, Myelin sheath, Synapse

Dendrites, Axon, Neurotransmitter

To receive messages from other cells.

To transmit electrical impulses to other neurons.

To speed up the transmission of messages.

To provide life support for the neuron.