Describe the function of the lungs in the circulatory system.

Wouldn't it be putting oxygen in and taking wastes out of the circulatory system?

Since this is not my area of expertise, I searched Google under the key words "lungs circulatory system" to get this:

http://www.google.com/search?client=safari&rls=en&q=lungs+circulatory+system&ie=UTF-8&oe=UTF-8

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.

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The function of the lungs in the circulatory system is to facilitate the exchange of gases, primarily oxygen and carbon dioxide, between the bloodstream and the external environment. This is achieved through a process called respiration.

To explain how the lungs function in the circulatory system, let's break it down into three main steps:

1. Oxygen intake: When we inhale, air enters the body through the nasal cavity or mouth and travels down the trachea (windpipe) into the bronchial tubes, which branch off into smaller tubes called bronchioles. These bronchioles then lead to tiny air sacs called alveoli.

2. Gas exchange: The alveoli are surrounded by tiny blood vessels called capillaries. In the alveoli, oxygen from the inhaled air diffuses across the thin walls of the air sacs and into the capillaries to be carried by red blood cells. At the same time, carbon dioxide, a waste product produced by cells in our body, passes from the capillaries into the alveoli. This process is known as gas exchange.

3. Carbon dioxide removal: Once oxygen molecules bind to red blood cells, they are carried by the circulatory system to all parts of the body, delivering oxygen to cells for various physiological processes. Meanwhile, carbon dioxide is carried back in the opposite direction. The deoxygenated blood, which now contains carbon dioxide, returns to the heart's right atrium and is then pumped to the lungs via the pulmonary artery. In the lungs, carbon dioxide is released from the blood into the alveoli, ready to be exhaled.

So, in summary, the lungs play a crucial role in the circulatory system by facilitating the exchange of gases, ensuring that oxygen is taken in and delivered to the body's cells, while carbon dioxide is removed and exhaled from the body.