The Water Cycle: The U.S. Geological Survey explains what the water cycle is and where water comes from. Animated Water Cycle: This animated water cycle diagram allows kids to click on different parts of the cycle to see how water changes form and moves.
The neuromuscular junction (NMJ) is the site of communication between motor nerve axons and muscle fibres. It is composed of four specialised cell types: motor neurons, Schwann cells, muscle fibres and the recently discovered kranocytes.
With knowledge of normal NMJ. physiology, most of the abnormalities affecting the NMJ can be differentiated using a. combination of nerve conduction studies, repetitive stimulation, exercise testing, and. needle EMG. NMJ disorders can be classified into immune-mediated, toxic or metabolic, and.