This program looks at nerve signals and how they are transmitted. It looks at the part played by nerve messages in reflex activities and at both the chemical and electrical activities of networks of nerve cells in contact.

Nerve Signals (2:24) -- Wired for Reflex Actions (4:26) -- Sensory Messages Trigger Reflexes (4:32) -- Language of Nerve Cells (4:10) -- Transmission of Nerve Impulses (5:09) -- Crossing Synapses (3:46)