Question

Describe the pathway of an oxygen molecule from outside the body to the kidneys

Answer 1

The journey of a Breath of Air :

Inorder to maintain our life and for our survival we need to breathe and the main component is oxygen itself. We collect oxygen from outside our body ,from the surroundings which plants produced as part of their photosynthesis . We can also artificially take oxygen in to our body in severe or breath issues.

• * The pathway of oxygen from outside of body to inside the body :

It include the respiratory airways leading into and out of lungs plus the lungs themselves.

Pathway of air :

Nasal cavities ( oral cavity)➡️pharynx ➡️Trachea ➡️ primary bronchi (left and right)➡️ secondary bronchi➡️teritiary bronchi➡️ bronchioles ➡️Alveoli ( site of gas exchange)

The oxygen enter the bloodstream from Alveoli, tiny sacs in lungs where gas exchange takes place.The transfer of oxygen into blood is through simple diffusion. The oxygen molecules move by diffusion out of capillaries and into the body cells.

And by circulation of blood from heart the oxygenated blood comes to kidneys from right and left Renal arteries off the abdominal Aorta

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