Finally once dropping off the cargo the red blood

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also brings energy, vitamins, and minerals to the cells in the organs and muscles of the body. Finally once dropping off the 'cargo' the red blood cells take the waste from the cells and get rid of it. Without blood flowing throughout the body we would not be able to move or use parts of their body therefore making them useless. In a rat’s body the circulatory system and the respiratory system work together very well. Their job overall is to get oxygen to the muscles and organs. The path of the oxygen (air) is something like this. When the rat goes to inhale its diaphragm pulls down this creates somewhat of a vacuum effect. This is because there is more room but the same amount of air, because of this force air is pulled into the Respiratory System where it begins its journey. When the rat inhales the air travels to the Pharynx, then it goes down the Trachea. Once in the Trachea the air travels through the bronchi then inside of the lungs and finally into the alveoli. Once in the alveoli gas exchange can occur. This is when the red blood cell in the capillaries and the alveoli trade gasses. The red blood cells get rid of the carbon dioxide and pick up the oxygen while the alveoli let the oxygen go and take in the carbon dioxide.
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