Which statement best describes an interaction between the muscular system and the respiratory system?Group of answer choicesThe diaphragm contracts causing the chest cavity to expand, which draws air into the lungs.Nutrients absorbed in the small intestine are transported in blood to the brainThe hormone adrenaline causes blood vessels to contract and send more blood to major muscles.Metabolic wastes generated by muscle cells are eliminated in urine.
Question
Which statement best describes an interaction between the muscular system and the respiratory system?Group of answer choicesThe diaphragm contracts causing the chest cavity to expand, which draws air into the lungs.Nutrients absorbed in the small intestine are transported in blood to the brainThe hormone adrenaline causes blood vessels to contract and send more blood to major muscles.Metabolic wastes generated by muscle cells are eliminated in urine.
Solution
The statement that best describes an interaction between the muscular system and the respiratory system is: "The diaphragm contracts causing the chest cavity to expand, which draws air into the lungs."
Here's why:
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The diaphragm is a large, dome-shaped muscle located at the base of the lungs. Your abdominal muscles help move the diaphragm and give you more power to empty your lungs.
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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.
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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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As your lungs expand, air is sucked in through your nose or mouth. The air travels down your windpipe and into your lungs. After passing through your bronchial tubes, the air finally reaches and inflates the tiny sacs called al
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