Which muscles are involved in breathing and how they work ?

1.	Which muscles are involved in breathing and how they work ?
Answer» Explanation: When you BREATHE in, or inhale, your diaphragm contracts (tightens) and moves downward. This increases the space in your CHEST cavity, into which your lungs expand. The intercostal muscles between your RIBS also help enlarge the chest cavity. They contract to pull your RIB cage both upward and outward when you inhale.

Answer»

Explanation:

When you BREATHE in, or inhale, your diaphragm contracts (tightens) and moves downward. This increases the space in your CHEST cavity, into which your lungs expand. The intercostal muscles between your RIBS also help enlarge the chest cavity. They contract to pull your RIB cage both upward and outward when you inhale.

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Which muscles are involved in breathing and how they work ? ​

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Which muscles are involved in breathing and how they work ?