Explanation:
Place your hand over your chest, take a deep breath, and then let it out.
Of course you already know that your lungs fill with air when you breathe, but did you know that your respiratory system does more than simply move oxygen into and out of your lungs? The structures of the respiratory system interact with structures of the skeletal, circulatory, and muscular systems to help you smell, speak, and move oxygen into your bloodstream and waste out of it.
respiratory-relationships-muscular-skeletal-cardiovascularImage from Human Anatomy Atlas.
We're going to take a look at the relationships between these systems and how they work to keep you breathing 24/7/365.
