Answer:
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Explanation:
Respiratory system: smoking irritates the windpipe and voice box. The lung airways will also swell and narrow, and there will be excess mucus in the lung passages. It also affects the lung's clearance system, which may lead to toxic buildup.
Circulatory system: There will be raised heart rate and blood pressure. Blood will also become stickier and more prone to clotting. The lining of the arteries will also be damaged. Smoking will reduce blood flow to fingers and toes; will also constrict blood vessels in the skin.
Hope this helps! Have an awesome day.
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<span>The first seven pairs of rib bones (beginning at the top of the sternum) are called "true ribs." They connect to the spine (by ligaments) at the back, and connect to the sternum by costal cartilage in the front. Costal cartilage is elastic and allows the ribcage to expand during respiration.</span>
