Echocardiogram. Guide. An echocardiogram (also called an echo) is a type of ultrasound test that uses high-pitched sound waves that are sent through a device called a transducer.The device picks up echoes of the sound waves as they bounce off the different parts of your heart.chocardiogram. Guide. An echocardiogram (also called an echo) is a type of ultrasound test that uses high-pitched sound waves that are sent through a device called a transducer.
The United Nations is an international organization designed to make the enforcement of international law, security, economic development, social progress, and human rights easier for countries around the world.rior to the United Nations (UN), the League of Nations was the international organization responsible for ensuring peace and cooperation between world nations. It was founded in 1919 to promote international cooperation and to achieve peace and security..
Overview. The United Nations is an international organization founded in 1945. It is currently made up of 193 Member States. The mission and work of the United Nations are guided by the purposes and principles contained in its founding Charter.ain Organs. The main organs of the UN are the General Assembly, the Security Council, the Economic and Social Council, the Trusteeship Council, the International Court of Justice, and the UN Secretariat. All were established in 1945 when the UN was founded.