respiratory systems · heart close up •atrium- small chamber pulls blood in •ventricle- large...
Post on 12-May-2020
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Heart Close Up• Atrium- small chamber pulls blood in
• Ventricle- large chamber pumps blood out
• Right Atrium- brings blood in from the veins
• Right Ventricle- pumps deoxygenated blood to lungs
• Left Atrium- brings oxygenated blood back from the lungs
• Left Ventricle- pumps oxygenated blood out to the entire body.
Tracheal System
• Insects do not have blood that carries oxygen. Rather, they are filled with tubes throughout the body – called trachea. They deliver oxygen directly to every cell in the body.
• Because it is difficult for air to reach every cell, insects are inherently limited in size.
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