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.
Neuromyelitis Optica Spectrum Disorder (NMOSD) involves immune-mediated inflammatory attacks in the spinal cord and/or the optic nerve. A person with NMOSD is at risk for multiple attacks of spinal cord inflammation or ON, or both. There is ordinarily no brain involvement, but this is not always the case.