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The blood with high oxygen content enter the heart in left atrium through right and left pulmonary veins, combined together.

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Describe the oxygen and carbon dioxide content of the blood in the left side of the heart versus the right side?

The right side of the heart takes the blood returning from the body and sends it to the lungs. It is high in carbon dioxide and low in oxygen. After the blood goes to the lungs it returns tot he left side of the heart to be pumped back out tot he body and it low in carbon dioxide and high in oxygen.


Where does oxygen enter blood?

Oxygen enters the blood through the alveoli in the lungs. It diffuses across the thin walls of the alveoli into the surrounding capillaries where it binds to hemoglobin in red blood cells for transportation throughout the body.


How does oxygen enter the human body?

oxygen (O2) enters the body via respiration (breathing) it enters small pouches in the lungs called alveoli. these alveoli are surrounded by tiny blood vessels called capillaries. there is an exchange at these alveoli, carbon dioxide (CO2) exits the blood and O2 enters the blood. this freshly oxygenated blood is now returned via the pulmonary vein to the Left side of the heart. the left ventricle pumps blood to the body. as the blood vessels get smaller they again form capillaries. there is another exchange of gasses, O2 is transferred out to the cells and CO2 (the waste product from cellular metabolism) is transferred to the blood. the Deoxygenated blood is then returned via the venous system to the right side of the heart. the deoxygenated blood is pumped back to the lungs and the alveoli via the pulmonary artery. and then the whole cycle starts over again.hope this helps :)


What is the overall function of the respiratory system?

The overall function of the respiratory system is to facilitate the exchange of oxygen and carbon dioxide between the body and the environment. This process involves breathing in oxygen-rich air, transferring oxygen to the bloodstream, and removing carbon dioxide from the body. The respiratory system also helps regulate the body's pH balance and plays a role in vocalization.


When oxygen enters the body it is carried to the cells by the?

When oxygen enters the body, it is carried to the cells by red blood cells. These red blood cells contain hemoglobin, a protein that binds to oxygen in the lungs and transports it to tissues throughout the body. Once oxygen-rich blood reaches the cells, it is able to participate in cellular respiration to produce energy.