Insulin receptors regulate glucose level in blood. without that, glucose level would be uncontrolled/not normal (high/low) and it would be impossible to maintain homeostasis (stability) :P hope it will help.. :)
The blank space may be : protect
False the seatbelt is the best and is just made more effective with the airbag added
The correct answer is Adrenaline.
Adrenaline is excreted to prepare your body and senses for the stressful situation by accelerating your heartbeat, moving blood to your muscles, and enlarging the airways of the lungs.