adrenaline

• where does adrenaline bind to?

  specific receptors in the heart.
• what does adrenline binding to receptors in the heart cause?

  the heart muscle to contract more frequently and with more force, so heart rate and blood pressure increases.
• what increases blood flow to muscles?

  increase in heart rate and blood pressure.
• an increase in blood flow to muscles means what?

  the cells recieve more oxygen and glucose for increased respiration.
• adrenaline also binds to receptors in the liver, what does this cause?

  the liver breaks down its glycogen stores to release glucose.
• what increases blood glucose levels?

  the liver breaking down its glycogen stores to release glucose.
• what does an increase in blood glucose levels mean?

  there's more glucose in the blood to be transported to the cells.
• what happens when your brain detects a stressful situation?

  it sends nerve impulses to the adrenal glands, which respond by secreting adrenaline. This gets the body ready for action.
• what does adrenaline do?

  increase heart rate and blood pressure.
• how does adrenaline increase heart rate and blood pressure?

  vasoconstriction (when blood vessels constrict).
• what does it mean when your heart rate and blood pressure increases?

  an increase in blood flow around the body, specifically to the muscle cells.
• what does adrenaline do in terms of the lungs?

  it enlarges the air passages of the lungs and alters the metabolism to boost the delivery of oxygen and glucose to the brain and the muscles.
• what does the liver do in terms of glucose?

  converts stored glycogen back into glucose, raising the blood sugar levels.
• where does adrenaline work in the body?

  • brain
  • heart
  • muscles
  • lungs
  • liver
  • blood