What is "the gas exchange in humans"?

Question

It's for a project on the cardiovascular system, for Biology

Answer 1

Humans take in oxygen gas and produce carbon dioxide.

Answer 2

Breathing is the gas exchange. Oxygen goes in carbon dioxide goes out.
Look up how the respiratory system works in conjunction with the cardiovascular system by bringing fresh oxygen to the blood.

"Circulation
The right side of the heart pumps blood from the right ventricle through the pulmonary semilunar valve into the pulmonary trunk. The trunk branches into right and left pulmonary arteries to the pulmonary blood vessels. The vessels generally accompany the airways and also undergo numerous branchings. Once the gas exchange process is complete in the pulmonary capillaries, blood is returned to the left side of the heart through four pulmonary veins, two from each side. The pulmonary circulation has a very low resistance, due to the short distance within the lungs, compared to the systemic circulation, and for this reason, all the pressures within the pulmonary blood vessels are normally low as compared to the pressure of the systemic circulation loop.

Virtually all the body's blood travels through the lungs every minute. The lungs add and remove many chemical messengers from the blood as it flows through pulmonary capillary bed . The fine capillaries also trap blood clots that have formed in systemic veins.


Gas Exchange
The major function of the respiratory system is gas exchange. As gas exchange occurs, the acid-base balance of the body is maintained as part of homeostasis. If proper ventilation is not maintained two opposing conditions could occur: 1) respiratory acidosis, a life threatening condition, and 2) respiratory alkalosis.

Upon inhalation, gas exchange occurs at the alveoli, the tiny sacs which are the basic functional component of the lungs. The alveolar walls are extremely thin (approx. 0.2 micrometres), and are permeable to gases. The alveoli are lined with pulmonary capillaries, the walls of which are also thin enough to permit gas exchange. All gases diffuse from the alveolar air to the blood in the pulmonary capillaries, as carbon dioxide diffuses in the opposite direction, from capillary blood to alveolar air. At this point, the pulmonary blood is oxygen-rich, and the lungs are holding carbon dioxide. Exhalation follows, thereby ridding the body of the carbon dioxide and completing the cycle of respiration.

In an average resting adult, the lungs take up about 250ml of oxygen every minute while excreting about 200ml of carbon dioxide. During an average breath, an adult will exchange from 500 ml to 700 ml of air. This average breath capacity is called tidal volume."

Answer 3

The movement of oxygen and carbon dioxide between the blood and the air in the lungs. Oxygen moves from air sacs in the lungs into the surrounding blood capillaries, while carbon dioxide passes from the capillaries into the air sacs.

Answer 4

On the first date...

Answer 5

Carbon dioxide to oxygen in your lungs, oxygen to carbon dioxide in your tissues.

Answer 6

Also blood gases are checked during surgery.

Answer 7

ecolink is correct, but everyone else is funny lol

Answer 8

Its when you fart and everybody can smell it.

Answer 9

Sounds a bit kinky...

Answer 10

http://health.howstuffworks.com/adam-200022.htm

This should help!