Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


The phenomenon is called "adrenaline rush", in which the adrenal grand releases adrenaline. Also called epinephrine. This very hormone increases blood flow to the muscles, output to the heart, pupil dilation and increased blood sugar.
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts