Your heart pumps blood around the body, while your kidneys filter impurities from blood. The Brain sends commands to all organs telling them what to do.
While the lungs collect oxygen and release carbon dioxide in the aveoli. The Muscles contract and relax, moving the skeleton. The Circulatory system moves blood through arteries, veins, capillaries to supply muscles with oxygen and remove waste products.
The Digestive system, including stomach, intestines, colon, digest food and supply food to the bloodstream.
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During exercise, the heart pumps faster to deliver more oxygen to the muscles, the lungs work harder to bring in more oxygen and get rid of carbon dioxide, the muscles contract and relax to produce movement, and the liver releases stored glycogen for energy. The kidneys also help regulate fluid balance and remove waste products produced during exercise.
SYSTEMS of organs - such as the respiratory system or the cardiovascular system.
Three body organs are: the brain, the heart, the liver.
The human body is made up of several different organs that work together to carry out various functions necessary for survival. Each organ has a specific role to play, and they all interact to maintain homeostasis and keep the body functioning properly.
The difference between cells, tissues, organs, and body systems are that many cells make tissues, many tissues make organs, and many organs make body systems.
There are no organs ON your back (apart form the skin). Your back is the upper OUTER surface of your body, your organs are inside your body.