ORGANS

Heart: The human heart pumps blood throughout the body through the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes. The heart is part of the cardiovascular system, which consists of the heart, blood vessels, and blood... Brain: The brain is an organ that serves as the center of the nervous system in all humans. The brain is located in the head, close to the sensory organs for senses such as vision. The brain controls automatic functions such as breathing, digestion, heart rate and blood pressure.