Capillaries surrounding cells pick up blood containing Water (dissolved in the plasma) and carbon dioxide (on the red blood cells) to bring it back through the veins and to the lungs. If I didn't answer your question or you want to ask more, post a message on my message board!
They pick up oxygen
Yes it does
In the lungs, in the alveolar capillaries
In the lungs, oxygen diffuses from the air sacs (alveoli) into the surrounding capillaries. These capillaries are thin-walled and have a large surface area for efficient gas exchange. The oxygen then binds to hemoglobin in red blood cells, forming oxyhemoglobin, which is then carried by the bloodstream to the tissues.
Within the circulatory system gas exchange happens at two places. First within the lungs where it picks up oxygen and gives up its carbon dioxide. Secondly, within the capillary beds of the tissues to deliver the oxygen (and nutrients) and pick up the carbon dioxide to bring back to the lungs.
yes
absorption
They are called Alveoli.
The alveoli of the lungs are surrounded by capillaries. As the blood travels through the capillaries, the red blood cells become oxygenated and give up their load of CO2
Red blood cells pick up oxygen and deposit carbon dioxide at the lungs
Capillaries
Lungs contain lots of blood. Blood goes to the lungs to pick up oxygen.