Movement and Exchange of Gases In The Human Body (2)

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Movement and Exchange of Gases In The Human Body (2)

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Movement and exchange of oxygen and carbon dioxide in the human body (1)

The air inhaled into the alveolus has a higher concentration of oxygen compared to the concentration of oxygen in the blood

Movement and exchange of oxygen and carbon dioxide in the human body (2)

Oxygen will diffuse through the wall of the alveolus into the walls of the capillaries and into the blood

Movement and exchange of oxygen and carbon dioxide in the human body (3)

In red blood cells, there is a dark red-coloured compound known as haemoglobin

Movement and exchange of oxygen and carbon dioxide in the human body (4)

Haemoglobin will combine with oxygen to form oxyhaemoglobin which is an unstable compound and bright red in colour

Movement and exchange of oxygen and carbon dioxide in the human body (5)

Blood with oxyhaemoglobin is transported from the lungs to the heart and pumped to the other parts of the body

Movement and exchange of oxygen and carbon dioxide in the human body (6)

When the blood reaches the area around body cells that has low concentration of O2, the oxyhaemoglobin being an unstable compound will decompose to release oxygen & change back into haemoglobin

Movement and exchange of oxygen and carbon dioxide in the human body (7)

In the body cells, the diffused oxygen oxidises glucose molecules into carbon dioxide, water and energy through the process of cellular respiration

Movement and exchange of oxygen and carbon dioxide in the human body (8)

Carbon dioxide released by the cells diffuses into the blood capillaries and is transported to the alveolus to be removed during exhalation

Factor determines the rate of exchange of oxygen between the alveolus and blood capillaries

The difference in the concentration of oxygen gas in the alveolus and blood capillaries

Kepentingan dinding alveolus dan kapilari darah

The alveolus and blood capillaries have thin walls which are made up of only one layer of cells

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