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In the lungs, the respiratory zones end in sacs called alveoli, which are the site of gas exchange. The alveoli have walls only one cell thick, and are surrounded by pulmonary capillaries which again have walls only once cell thick; gases diffuse, along their concentration gradients (i.e. from the area of high concentration to the area of low concentration), through these two thicknesses of cells.

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How are oxygen and carbon dioxide getting exchanged in body tissues?

Oxygen and carbon dioxide are exchanged in body tissues through the process of diffusion. Oxygen in the blood enters the tissue cells, where it is used for cellular respiration. Carbon dioxide, a byproduct of this process, moves from the cells into the blood to be transported back to the lungs for exhalation.


Which 2 gases are exchanged at the surface of the air sac?

Oxygen and carbon dioxide are exchanged at the surface of the air sac. Oxygen is taken in from the air into the bloodstream, while carbon dioxide is released from the bloodstream into the air to be exhaled.


What gases are exchanged in the respiratory system?

The gases that are exchanged are oxygen and carbon dioxide.


What are small vessels where oxygen is exchanged for carbon dioxide?

Capillaries are the small blood vessels where oxygen is exchanged for carbon dioxide. They are located throughout the body and allow for the exchange of gases between the blood and tissues.


Where are oxygen and carbon dioxide exchanged in the lungs?

oxygen and carbon dioxide are exchanged in alveoli (singular alveolus).


Which two gases are exchanged in the lungs?

oxygen and carbon dioxide


What two gases are exchanged in the lungs?

Oxygen and carbon dioxide in the alceoliCO2 and O2


What substances come out of the exchange at the capillaries?

Oxygen, nutrients, and waste products such as carbon dioxide are exchanged at the capillaries. Oxygen and nutrients are delivered to the tissues, while waste products like carbon dioxide are picked up for elimination.


How are oxygen and carbon dioxide exchanged between the alveoli and the capillaries?

Oxygen diffuses from the alveoli into the capillaries, where it binds to hemoglobin in red blood cells for transport to tissues. Carbon dioxide diffuses from the capillaries into the alveoli and is exhaled from the body.


What gases are exchanged in respiratory system?

The gases that are exchanged are oxygen and carbon dioxide.


How are oxygen and carbon dioxide exchanged between the veins and arteries?

Plants give us oxygen we give them carbon dioxide.


What gasses are exchanged in the lungs?

There are two main gasses that are exchanged in the lungs: carbon dioxide and oxygen. The lungs use tiny air chambers called alveoli to take in oxygen and let out carbon dioxide.