The giant [[axon|axons]] of [[squid]] were used by early [[biophysics|biophysicists]] to uncover the manner in which nerve signals propagate along nerve cells. Since the axons have a very large diameter --the biggest known of any invertebrate--they were an ideal model system to use in studying this phenomenon. | The giant [[axon|axons]] of [[squid]] were used by early [[biophysics|biophysicists]] to uncover the manner in which nerve signals propagate along nerve cells. Since the axons have a very large diameter --the biggest known of any invertebrate--they were an ideal model system to use in studying this phenomenon. |