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.
TMJ expert: You are likely referring to locking of the jaw related to jaw joint (TMJ) disk displacement and not tetanus related lockjaw. The locking jaw means there is a serious TMJ problem. See a TMJ expert. Any dentist can be a TMJ expert with the proper training and experience.