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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

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14y ago
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5mo ago

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.

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7y ago

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.

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15y ago

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.

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15y ago

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

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12y ago

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

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7y ago

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

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12y ago

arteries

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14y ago

the lungs

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Q: Where does oxygen pass through when it enters the blood?
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Related questions

Which blood vessel does blood oxygen pass through?

Oxygen and other gases pass through the capillaries.


What is the last valve oxygen depleted blood must pass through before pumping to the lungs?

The last valve oxygen-depleted blood must pass through before being pumped to the lungs is the pulmonary valve. This valve separates the right ventricle from the pulmonary artery and prevents blood from flowing back into the heart. Once the blood passes through this valve, it enters the pulmonary artery and travels to the lungs for oxygenation.


How does oxygen get from your lungs and into the blood?

You breathe the oxygen into your lungs. The oxygen then dissolves into the water lining which is called the alveoli. Finally, the oxygen will cling to the red blood cells as they pass through the alveolar capillaries and now the oxygen is in the blood.


How does oxygen pass from the atmosphere in the alveoli to the blood stream?

Oxygen in the alveoli diffuses across the thin alveolar membrane into the adjacent capillaries where it binds to hemoglobin in red blood cells. This oxygenated blood is then transported throughout the body to supply tissues and organs with oxygen for cellular respiration.


What is the bloodvesells function?

The function of the blood vessel is to pass oxygen through the body via the blood.


State two substances that pass into the blood?

Oxygen and glucose are two substances that pass into the blood. Oxygen is essential for cellular respiration, while glucose provides energy for cells.


How many oxygen molecules does have to pass through from the alveolus to get into the blood?

3 or 4


What is the body organ which oxygen passes through to capillaries?

The alveoli and capillaries in the lungs pass oxygen to the blood. Both have very thin walls, which allow the oxygen to pass from the alveoli to the blood. The capillaries then connect to larger blood vessels, called veins, which bring the oxygenated blood from the lungs to the heart.


What happen to the blood in the right atrium?

The blood in the right atrium receives deoxygenated blood from the body through the superior and inferior vena cava. It then passes through the tricuspid valve into the right ventricle to be pumped to the lungs for oxygenation.


What allows the oxygen to pass into your bloods?

Oxygen is able to pass into your blood through diffusion. In the lungs, oxygen moves from the alveoli in the lungs into the surrounding capillaries where it binds to hemoglobin in red blood cells for transport throughout the body.


Oxygen and nutrients pass from the blood to the bodys tissues through the thin walls of the?

Capillaries


What structure must blood pass through before it enters the right ventricle?

right atrioventricular valve