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Respiratory system


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respiratory system
During exercise muscles require oxygen and produce carbon dioxide. This is the main function of thus system and the process is called gaseous exchange
tidal volume
the amount of air breathed in and out the lungs in 1 breath
vital capacity
the maximum amount of air that cna be exhaled after breathing in as much as possible
alveoli
tiny air sacs inside the lungs where gaseous exchange takes place
gaseous exchange
the alveoli are surrounded by capillaries. When oxygen enters the alveoli it diffuses into the capillaries where it's transported to the muscles, at the same time carbon dioxide diffuses from the capillaries into the alveoli to be breathed out
smoking
this damages the lungs and alveoli and makes it less stretchy and less efficient. This results in less oxygen and becoming short of breath
immediate effects of exercise on the respiratory system
these include: increased breathing rate, increased tidal volume and oxygen debt
increased breathing rate
fast breathing allows more oxygen to enter the lungs
increased tidal volume
breathing deeper allows more oxygen to enter the lungs
oxygen debt
anaerobic exercise creates an oxygen debt and so this is repaid by gasping for breath
Long term effects of the respiratory system
these include: increased lung capacity/volume, increased vital capacity and number of alveoli increases
increased lung capacity/volume
regular exercise makes the diaphragm and intercostal msucles stronger, which allows more air into the lungs
increased vital capacity
a larger lung volume increases this