Respiratory- You breath faster to help supply the muscles with more oxygen. 
Integumentary (skin) - Sweat helps cool down the body.
        
             
        
        
        
Only the talus bone articulates with the leg bones.
        
             
        
        
        
A bacteria basically, smaller than a eukaryotic cell, can't be animal or plant cell and is less complex
        
             
        
        
        
Pulmonary vein. It enters your pulmonary vein and then enters your left atrium.
I hope that helped :)
 
        
             
        
        
        
Answer:
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