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.
It was Hezekiah who stopped up the spring of water of Upper Gihon, leading it downward west of the City of David; Hezekiah prospered in all that he did. (II Chronicles 32:30) This engineering feat was accomplished by digging a 1,750-foot (533 meter) tunnel into the mountain. An ancient stone carving found near the entrance describes the incredible operation. Today, trekking through Hezekiahâs Tunnel in knee-high water and learning about its history is a highlight for visitors to Jerusalem.