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the lungs!!
The respiratory system takes oxygen into the body and rids itself of carbon dioxide.
The circulatory system (blood and vessels) transports oxygen and nutrients around the body. The heart furnishes the power to move the blood.
red blood cells
It is an iron-based protein called hemoglobin.
The heart is responsible for supply of food and oxygen to all the cells in your body. The function is done through blood supply.
Respiratory system
The organ that is responsible for carrying chemicals through the body is the heart. This is because the heart pumps the blood which carries chemicals and oxygen to all body parts.
The main organ of the cardiovascular system is the heart. The heart is responsible for pumping blood throughout the body to deliver the necessary oxygen to vital organs.
lungs take oxygen into your body
The heart is a round, tight muscular organ that is responsible for pumping blood throughout the body. It is located in the chest and is vital for maintaining circulation and delivering oxygen and nutrients to the body's tissues and organs.
Lungs, two in number, situated in thorax feeds oxygen to body.
the lungs!!
The Heart
your lungs
to carry oxygen to the organ & cells
oxygen and nutrients