Answer:
to continually produce energy,your organs need oxygen and the oxygen  is carried in your red blood cells.
 
        
                    
             
        
        
        
Answer:
These results show that the body regulates its salt and water balance not only by releasing excess sodium in urine, but by actively retaining or releasing water in urine. The advantage of this mechanism is that the long-term maintenance of body fluids isn't as dependent on external water sources as once believed.
 
        
             
        
        
        
They all have something in common
        
             
        
        
        
The answer to this question would be: visceral motor
The muscle in the stomach is not consciously moved. The muscle regulated automatically by the nervous system based on some mechanism like other organs. The things that can influence the muscle would be when the autonomous nervous system is activated. This kind of motor innervation is called visceral motor.