Where does oxygen pass through when it enters the blood?

Answer 1

when your body's cells use O2 in cellular respiration they give off Co2 as a waste product which fills up your lungs. when you then inhale O2 into your lungs they enter air sacks made of a thin tissue that allows gasses to pass through. The O2 then diffuses into your blood stream while the Co2 diffuses out. Your lungs are now filled with Co2 in which you exhale wile your body's cell are producing more Co2. You then in hale and the cycle restarts.

O2= oxygen

Co2= carbon dioxide

diffusion= movement of the concentration from high to low

Answer 2

When oxygen is inhaled, it travels to the lungs. In the lungs, millions of tiny sacs called alveoli intertwine with a network of very small blood vessels. The alveoli allow carbon dioxide from the blood to be exchanged with oxygen in the lungs. The oxygen molecules are bound to hemoglobin, a protein found in red blood cells. From there the circulatory system carries the red blood cells through the body, and the oxygen is carried wherever it is needed.
Air to lung alveoli, across the epithelial [also capillary] barrier-lining of Cells to the heme-groups of hemoglobin found in red-blood-cells. Oxygen containing RBC's are then transported to another set of capillaries located [found] at the/our extremeties.

Answer 3

It is transported there by the bloodstream. Red blood-cells get their colour from a molecule called haemoglobin. When these molecules pass through the lungs they pick up oxygen, forming oxy-haemoglobin. When a molecule of this passes a cell which needs oxygen, the oxygen is stripped off, and haemolobin continues on it's journey. Note. Haemoglobin is dark red; oxy-haemoglobin is a brighter red. That's why arterial blood is a brighter red than venous blood.

Answer 4

Oxygen enters the blood through the walls of the alveoli in the lungs. This process occurs during inhalation when oxygen molecules cross the alveolar membrane into the capillaries, where they bind to hemoglobin in red blood cells for transport throughout the body.

Answer 5

It is dissolved in your red bloodcells buy the Iron they have

Answer 6

When you breathe air it goes trough your lungs and your lungs transfers the oxygen to the the bloodstream.

Answer 7

It reaches the second half of the capillary bed by simple diffusion.

Answer 8

arteries

Answer 9

the lungs