The West is blinking in disbelief â Vladimir Putin just invaded Ukraine. German diplomats, French Eurocrats and American pundits are all stunned.
A: The main organ in the circulatory system is the heart, according to Hillendale Health. The two other major parts of the circulatory system are the blood and the blood vessels. The heart is found slightly to the left at the center of the chest, and it is primarily responsible for pumping blood and keeping the blood moving throughout the body, explains Hillendale Health.
The brain is one of the largest and most important organs of the human body. It sends messages to and receives messages from all over the body. The brain is one of the largest and most important organs of the human body. Weighing in at about three pounds, this organ is covered by a three layered protective membrane called the meninges. The brain has a wide range of responsibilities. From coordinating our movement to managing our emotions, this organ does it all. The brain is composed of three main divisions: the forebrain, brainstem, and hindbrain. Forebrain. The forebrain is the most complex of the three parts.