Adrenal gland is known as emergency gland which helps the body to adjust to the stress.
Explanation:
Adrenal gland secretes a hormone which is known as adrenaline hormone which is called as emergency hormone. When adrenaline is secreted into the blood it prepares our body of action. This hormone rapidly responds to stress by increasing our heart rate and rushing blood to muscles and brain.
Manipulated Variable:The speed working on maths problems Responding Variable: The group that use¬ using a calculator Controlled Variable:The same maths quetions