A spasm is a sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ such as a heart, or a similarly sudden contraction of an orifice.It most commonly refers to a muscle cramp which is often accompanied by a sudden burst of pain, but is usually harmless and ceases after a few minutes. spasm is a sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ such as a heart, or a similarly sudden contraction of an orifice.
Top 10 largest Cement Producing Countries in the World. China has the first stage in the list of cement producing countries. They produce more than 2482 million tonnes. It is mainly used for construction and china is highly populated.
Ontario Quebec is the largest producer of refined metal in Canada. Great quantities of iron, zinc, and nickel are processed there due to the abundant hydro electric resour â¦ ces of that Province. Great quantities of aluminum are also refined in Quebec from bauxite mined in Jamaica.anada is one of the wealthiest of the world's nations. Its economy  is dominated by the service industry, with logging and oil  production serving major roles as well.