The skeletal system and the respiratory system are connected because the respiratory system provides the skeletal system with oxygen. We inhale oxygen through our mouth or nose and it goes down through our trachea and bronchi to little air sacs in our lungs. These air sacs are wrapped in capillaries, so oxygen diffuses across the air sacs' thin walls to get into the capillary. Once in the capillary, the oxygen molecules will attach to hemoglobin in red blood cells and ride on over to wherever it is needed (but it would first be pumped though the heart and through arteries). One place it is needed is in bone cells, the building blocks of the skeletal system. At another capillary near the cells, the oxygen molecules would diffuse out of the capillary and into the cells. In the cells, the oxygen would be used along with glucose for cell respiration, the process in which these products are turned into energy for the cell to use to do its job. The formula for cell respiration is shown here: oxygen + glucose --> energy + water + carbon dioxide
Energy is used by the cell, as we said before. Water and carbon dioxide, however, are waste products of cell respiration, and they have to get out of the body. Carbon dioxide is taken care of by the respiratory system (water comes out as sweat or urine). Carbon dioxide molecules basically takes the whole trip that the oxygen molecules took, except they travel in veins, not arteries, because they are traveling back to the heart before diffusing INTO the little air sacs and back UP the bronchi and trachea until they are exhaled out of our nose and released into the air again.
The skeletal system and the respiratory system are also connected because the ribs (skeletal) protect the lungs (respiratory) from severe damage while at the same time allow for movement (expansion) when the lungs fill with air.
The skeletal system and the respiratory system are connected because the respiratory system provides the skeletal system with oxygen. We inhale oxygen through our mouth or nose and it goes down through our trachea and bronchi to little air sacs in our lungs. These air sacs are wrapped in capillaries, so oxygen diffuses across the air sacs' thin walls to get into the capillary. Once in the capillary, the oxygen molecules will attach to hemoglobin in red blood cells and ride on over to wherever it is needed (but it would first be pumped though the heart and through arteries). One place it is needed is in bone cells, the building blocks of the skeletal system. At another capillary near the cells, the oxygen molecules would diffuse out of the capillary and into the cells. In the cells, the oxygen would be used along with glucose for cell respiration, the process in which these products are turned into energy for the cell to use to do its job. The formula for cell respiration is shown here:
oxygen + glucose --> energy + water + carbon dioxide
Energy is used by the cell, as we said before. Water and carbon dioxide, however, are waste products of cell respiration, and they have to get out of the body. Carbon dioxide is taken care of by the respiratory system (water comes out as sweat or urine). Carbon dioxide molecules basically takes the whole trip that the oxygen molecules took, except they travel in veins, not arteries, because they are traveling back to the heart before diffusing INTO the little air sacs and back UP the bronchi and trachea until they are exhaled out of our nose and released into the air again.
The skeletal system and the respiratory system are also connected because the ribs (skeletal) protect the lungs (respiratory) from severe damage while at the same time allow for movement (expansion) when the lungs fill with air.