Synaptic Transmission. In a chemical synapse, the pre and post synaptic membranes are separated by a synaptic cleft, a fluid filled space. The chemical event is involved in the transmission of the impulse via release, diffusion, receptor binding of neurotransmitter molecules and unidirectional communication between neurons. The neurotransmitter termination can occur in three ways - reuptake, enzymatic degradation in the cleft and diffusion.
Pride in Accomplishment: The Interstate H-3 Project. Hawaii, America's 50th state, is known around the world for gentle trade winds and tropical beauty. While Hawaii takes pride in these natural wonders, we are also proud of our human achievements. One truly spectacular accomplishment is the completion of the Interstate H-3 freeway on the island of Oahu. H-3, 37 years in the making, was officially opened on Dec.12, 1997.
Built in 2000, the tunnel is located in Norway (LÃ¦rdal -Aurland). Itâs part of the E16 road. Itâs 24,510 km (15.2 mi) long. Itâs 1 tube, and is the longest road tunnel in the world. Yamate Tunnel. Built in 2010-2015, the tunnel is located in Japan (Tokyo). Itâs part of the C2, Shuto Expressway. Itâs 18,200 km (11.5 mi) long. Itâs 2 tubes, and is the longest in-city road tunnel in the world. Zhongnanshan Tunnel