modification of breathing rate Flashcards
how do we breath during rest
about 15 times per minute which is the average
what happens when we take part in strenuous physical activity like playing soccer or running a race
our bodies require more oxygen so that more food can be broken down by cellular respiration to produce extra energy required for the activity
what happens when more energy is releases during cellular respiration
the body need to get rid of extra carbon dioxide
what happens as a result of physical activity
the rate of cellular respiration increases to release more energy
what happens as cellular respiration increases
more carbon dioxide is released into the blood
what ten happens to the medulla oblongata
it sends impulses to the heart and to breathing muscles
what happens as a result of the increased carbon dioxide
the medulla oblongata of the brain becomes simulated
what happens as a result of the medulla oblongata sending impulses to the heart and to the breathing muscles
the heart beats faster and blood carrying carbon dioxide is pumped faster to the lungs from the tissues
what cause breathing movement to speed up
breathing muscles ( the diaphragm and intercostal muscles ) cause the breathing movements ( inhalation and exhalation) to be speeded up
what also helps to push up the diaphragm with greater force
the abdominal muscles
what results from these fast breathing movements
carbon dioxide is removed out of the body more quickly and more oxygen is taken in rapidly and supplied to the tissues in this way the levels of oxygen and carbon dioxide are brought back to their normal limits
what is homeostasis
the ability of the body to maintain the composition of the blood more or less constant
