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.
The freeway runs eastward from there through a valley fed by North Halawa Stream to the Koolau Range. Six miles east of H1, Interstate H-3 reaches the Tetsuo Harano (Trans-Koolau) Tunnels (Halawa portal) at an altitude of 840 feet above sea level (the Halawa portal is 1,305 feet above sea level). Emerging from the tunnels, Interstate H-3 circles southward along the windward side of the Koolau Range. The freeway utilizes a high viaduct above Haiku Valley through to the 690 foot long Hospital Rock Tunnel across the north slope of Pu'u Keahi a Kahoe Mountain.