Asked by MICAH LAME
How does the muscular system relate with the respiratory system? Simple answer. Human biology.
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- Breathing is driven by muscles: the diaphragm and intercostal muscles contract to expand the chest and draw air in; they relax to push air out.
- Lungs exchange gases (O2 in, CO2 out) with the blood; that blood carries oxygen to skeletal muscles so they can contract.
- Active muscles use more O2 and produce more CO2, so the respiratory system increases breathing rate and depth during exercise.
- If muscles don’t get enough oxygen, they switch to anaerobic metabolism and produce lactic acid, causing fatigue.
- Smooth muscle in the airways also changes airway size, affecting airflow to the lungs.
In short: respiratory muscles create airflow and the respiratory system supplies oxygen and removes carbon dioxide needed for muscle function.
- Lungs exchange gases (O2 in, CO2 out) with the blood; that blood carries oxygen to skeletal muscles so they can contract.
- Active muscles use more O2 and produce more CO2, so the respiratory system increases breathing rate and depth during exercise.
- If muscles don’t get enough oxygen, they switch to anaerobic metabolism and produce lactic acid, causing fatigue.
- Smooth muscle in the airways also changes airway size, affecting airflow to the lungs.
In short: respiratory muscles create airflow and the respiratory system supplies oxygen and removes carbon dioxide needed for muscle function.
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